Exhibit 99.1

 

 

 

 

 

Independent Technical Report for the
Condor Project, Ecuador

 

 

Report Prepared for

Silvercorp Metals Inc.

 

 

Report Prepared by

SRK Consulting (Canada) Inc.

 

 

 

 

 

 

 

 

 

CAPR003605      May 12, 2025

 

 

Independent Technical Report for the Condor Project, Ecuador

 

Silvercorp Metals Inc.

Suite 1750-1066 W. Hastings Street

Vancouver, BC V6E 3X1

Canada

 

SRK Consulting (Canada) Inc.

155 University Avenue, Suite 1500

Toronto, ON M5H 3B7

Canada

     

+1 416 504 2024

https://silvercorpmetals.com/

 

+1 416 601 1445

www.srk.com

     

SRK Project Number: CAPR003605

   
     

Effective Date: February 28, 2025

   
     

Signature Date: May 12, 2025

   
     

Qualified Persons / Authored by:

   
     

[“Original signed”]

  [“Original signed”]

Mark Wanless, Pr.Sci.Nat
Principal Consultant

 

Falong Hu, MBA, BEng, FAusIMM, PMP
Principal Consultant

     

[“Original signed”]

 

[“Original signed”]

Yanfang Zhao (Bonnie), MEng, MAusIMM
Principal Consultant
  Lanliang Niu, Beng, MAusIMM
Principal Consultant

 

Peer Reviewed by:

 

Glen Cole, PGeo, Practice Leader and Principal Consultant (Resource Geology)

 

 

 

 

 

 

 

 

Cover Image(s):

 

Image of the Condor Project property sourced from https://silvercorpmetal.com

 

 

IMPORTANT NOTICE

 

This report was prepared as a National Instrument 43-101 Standards of Disclosure for Mineral Projects Technical Report for Silvercorp Metals Inc. (Silvercorp) by SRK Consulting (Canada) Inc. (SRK). The quality of information, conclusions, and estimates contained herein are consistent with the quality of effort involved in SRK’s services. The information, conclusions, and estimates contained herein are based on i) information available at the time of preparation, ii) data supplied by outside sources, and iii) the assumptions, conditions, and qualifications set forth in this report. This report is intended for use by Silvercorp subject to the terms and conditions of its contract with SRK and relevant securities legislation. The contract permits Silvercorp to file this report as a Technical Report with Canadian securities regulatory authorities pursuant to National Instrument 43-101. Except for the purposes legislated under provincial securities law, any other uses of this report by any third party is at that party’s sole risk. The responsibility for this disclosure remains with Silvercorp. The user of this document should ensure that this is the most recent Technical Report for the property as it is not valid if a new Technical Report has been issued.

 

 

CAPR003605    Silvercorp Metals Inc.

Independent Technical Report for the Condor Project, Ecuador

 

Contents

 

Executive Summary ix
Property Description and Ownership ix
Accessibility, Climate, Physiography, Local Resources and Infrastructure x
History x
Geology and Mineralization xi
Deposit Types xii
Exploration, Quality Assurance and Quality Control xiii
Data Verification xiv
Mineral Processing and Metallurgical Testing xiv
Mineral Resource Estimates xvii
Interpretation and Conclusions xix
Recommendations xx

 

1 Introduction and Terms of Reference 1
1.1 Scope of Work 1
1.2 Work Program 2
1.3 Basis of Technical Report 2
1.4 Qualifications of SRK and SRK Team 3
1.5 Site Visit 3
1.6 Acknowledgement 3
1.7 Declaration 3
     
2 Reliance on Other Experts 5
     
3 Property Description and Location 6
3.1 Property Location 6
3.2 Mineral Tenure 7
3.3 Underlying Agreements 8
3.4 Environmental Regulations and Permitting 8
3.5 Mining Rights in Condor Project 9
     
4 Climate, Local Resources, Infrastructure, and Physiography 11
4.1 Accessibility 11
4.2 Climate 11
4.3 Local Resources and Infrastructure 12
4.4 Physiography 12
     
5 History 14
5.1 Ownership History 14
5.2 Exploration History 14
5.3 Production 16
5.4 Previous Mineral Resource Estimates 16
     
6 Geological Setting and Mineralization 18
6.1 Regional Geology 18
6.2 Property Geology 20

 

  
SRK CONSULTING (CANADA) INC.    MAY 12, 2025i

CAPR003605    Silvercorp Metals Inc.

Independent Technical Report for the Condor Project, Ecuador

 

6.3 Mineralization 23
     
7 Deposit Types 26
     
8 Exploration 27
     
9 Drilling 28
9.1 Historical Drilling (Pre-2019) 29
9.2 Luminex Drilling (2019 – 2021) 30
9.3 Luminex Drilling (2022 – 2023) 31
9.4 Luminex Drilling Procedures 31
9.5 Recommendations 32
     
10 Sample Preparation, Analyses, and Security 33
10.1 Sampling 33
10.2 Sample Preparation and Analysis 34
10.3 Sample Shipment and Security 35
10.4 Bulk Density 36
10.5 QAQC 36
10.6 Recommendations 39
     
11 Data Verification 40
11.1 Site Visit 40
11.2 Historical Data Validation 41
11.3 Analytical Quality Control Data Validation 42
11.4 Recommendations and Conclusions 58
     
12 Mineral Processing and Metallurgical Testing 60

12.1 Introduction 60
12.2 Los Cuyes West 60
  12.2.1 Head Assay and Mineral Composition 60
  12.2.2 Gravity Concentration 61
  12.2.3 Cyanidation 62
  12.2.4 Bulk Flotation 64
  12.2.5 Concentrate Cyanidation 64
  12.2.6 Flotation of Cyanide Leached Bulk Concentrate for Recovery of Silver, Lead and Zinc 66
  12.2.7 Flotation of Whole Ore Cyanidation Residue 68
12.3 Camp 68
  12.3.1 Head Assay and Mineral Composition 68
  12.3.2 Gravity Concentration 70
  12.3.3 Cyanidation 70
  12.3.4 Bulk Flotation 72
  12.3.5 Concentrate Cyanidation 73
  12.3.6 Lead and Zinc Flotation of the Cyanide Leached Bulk Concentrate 73
  12.3.7 Sequential Selective Flotation of the Whole Ore Cyanide Leach Residue 74
12.4 Soledad   75
  12.4.1 Direct Cyanidation 75
  12.4.2 Bulk Flotation Followed By Gravity Concentration And Cyanidation Process Options 75
  12.4.3 Multi-Stage Gravity Concentration Followed By Cyanidation Options 77
12.5 Enma   79

 

  
SRK CONSULTING (CANADA) INC.    MAY 12, 2025ii

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Independent Technical Report for the Condor Project, Ecuador

 

  12.5.1 Sample and Head Assay 79
  12.5.2 Whole Ore Cyanidation 79
  12.5.3 Gravity Concentration and Cyanide Leach of Gravity Concentrate 80
  12.5.4 Grindability 80
12.6 Conclusion and Recommendation 81
       
13 Mineral Resource Estimates 83
13.1 Introduction 83
13.2 Estimation Procedures 83
13.3 Resource Database 84
13.4 Domain Modelling 84
  13.4.1 Camp 84
  13.4.2 Los Cuyes 86
  13.4.3 Soledad 88
  13.4.4 Enma 89
13.5 Specific Gravity 90
13.6 Compositing 91
  13.6.1 Camp 91
  13.6.2 Los Cuyes 93
  13.6.3 Soledad 95
  13.6.4 Enma 96
13.7 Evaluation of Outliers 98
  13.7.1 Camp 98
  13.7.2 Los Cuyes 98
  13.7.3 Soledad 100
  13.7.4 Enma 100
13.8 Spatial Continuity Assessment 101
  13.8.1 Camp 101
  13.8.2 Los Cuyes 102
  13.8.3 Soledad 104
  13.8.4 Enma 106
13.9 Block Model and Grade Estimation 107
  13.9.1 Camp 107
  13.9.2 Los Cuyes 109
  13.9.3 Soledad 111
  13.9.4 Enma 111
13.10 Model Validation 113
  13.10.1 Camp 113
  13.10.2 Los Cuyes 116
  13.10.3 Soledad 120
  13.10.4 Enma 122
13.11 Mineral Resource Classification 124
  13.11.1 Camp 124
  13.11.2 Los Cuyes 126
  13.11.3 Soledad 129
  13.11.4 Enma 130
13.12 Mineral Resource Statement 131
13.13 Grade Sensitivity Analysis 136
13.14 Previous Mineral Resource Estimate 143

 

  
SRK CONSULTING (CANADA) INC.    MAY 12, 2025iii

CAPR003605    Silvercorp Metals Inc.

Independent Technical Report for the Condor Project, Ecuador

 

14 Adjacent Properties 145
     
15 Other Relevant Data and Information 147
     
16 Interpretation and Conclusions 148
     
17 Recommendations 149
     
References 150
     
Appendix 151

 

  
SRK CONSULTING (CANADA) INC.    MAY 12, 2025iv

CAPR003605    Silvercorp Metals Inc.

Independent Technical Report for the Condor Project, Ecuador

 

Tables

Table i: Cyanidation Test Results Summary - Gold and Silver Extractions xv
Table ii: Overall Recovery of Bulk Flotation – Concentrate Cyanidation – Residue Flotation xvi
Table iii: Overall Recovery of Cyanidation - Residue Flotation xvi
Table iv: Underground Extraction Mineral Resource Statement for Condor Project, as of 28 February 2025 xviii
Table v: Open Pit Mineral Resource Statement for Condor Project, as of 28 February 2025 xix
Table 3.1: Condormining Concessions 9
Table 5.1: Geochemical Surveys of Condor Project 15
Table 5.2: Geophysical Surveys of Condor Project 16
Table 9.1: Drilling Programs of Condor Project (Pre-2019) 30
Table 9.2: Drilling hole Summary of Condor Project (2022-2023) 31
Table 10.1: Condor QAQC Samples During the Period 1994 to 2023 37
Table 11.1: Standards from Inspectorate Services Summary for the Condor Project 42
Table 11.2: CRM Reference Value Summary for the Condor Project 43
Table 11.3: CRM Usage at the Condor Project 44
Table 11.4: Selected CRM Results Summary for the Camp deposit 45
Table 11.5: Selected CRM Results Summary for the Los Cuyes deposit 48
Table 11.6: Selected CRM Results Summary for the Soledad Deposit 50
Table 11.7: Selected CRM Results Summary for the Enma Deposit 52
Table 11.8: Blanks Summary for the Condor Project 53
Table 11.9: Duplicates Summary for the Condor Project 54
Table 12.1: Head Assays for Los Cuyes West and Breccia Pipe Samples 61
Table 12.2: Bulk Mineralogy by XRD for Los Cuyes West and Breccia Pipe Samples 61
Table 12.3: Gravity Concentration for Master Composite of Los Cuyes and Breccia Pipe 62
Table 12.4: Whole Ore Cyanidation Results for Los Cuyes West and Breccia Pipe 62
Table 12.5: Bulk Flotation Results for Los Cuyes West and Breccia Pipe 64
Table 12.6: Intensive CIL Cyanide Leach of Flotation Concentrate for Los Cuyes West and Breccia Pipe 65
Table 12.7: Standard CIL Cyanide Leach of Flotation Concentrate for Los Cuyes West and Breccia Pipe 65
Table 12.8: Overall Recovery of Bulk Flotation and Concentrate Cyanidation for Los Cuyes West and Breccia Pipe 66
Table 12.9: Results of Bulk Flotation-Cyanidation-Pb Flotation-Zn Flotation 67
Table 12.10: Results of Whole Ore Cyanidation and Bulk Flotation of Cyanide Leached Residue of Los Cuyes Master Composite 68
Table 12.11: Head Assay Results of the Samples from the Camp Deposit 69
Table 12.12: Bulk Mineralogy by XRD for the Samples from the Camp Deposit 69
Table 12.13: Gravity Concentration Result for the Master Composite of the Camp Deposit 70
Table 12.14: Results of Gravity Tails Cyanidation for the Camp Deposit 71
Table 12.15: Test Results of the Whole Ore Cyanide Leach (WOCN) and CIL Cyanide Leach for the Camp Composite samples 71
Table 12.16: Bulk Flotation of the Gravity Tails and the Feed Sample for the Camp Deposit 72
Table 12.17: Bulk Flotation of the Design of Experiment for the Camp Deposit 72
Table 12.18: Cyanidation of the Bulk Flotation Concentrate for the Base Camp 73
Table 12.19: Lead and Zinc Flotation of the Cyanide Leached Bulk Concentrate for the Camp Deposit 74
Table 12.20: Results of the Whole Ore Cyanidation and Flotation of the Cyanide Leach Residue for the Camp Master Composite 74
Table 12.21: WOCN Test Results of San Jose Sample 75
Table 12.22: Cyanidation Results of the San Jose Composite Sample 75

 

  
SRK CONSULTING (CANADA) INC.    MAY 12, 2025v

CAPR003605    Silvercorp Metals Inc.

Independent Technical Report for the Condor Project, Ecuador

 

Table 12.23: Bulk Flotation Test Result of a San Jose Composite Sample 76
Table 12.24: Summary Results of Bulk Flotation and Cyanide Leach of the Bulk Concentrate 76
Table 12.25: Summary Results of Bulk Flotation, and Gravity Concentration and Cyanidation 77
Table 12.26: Results of Multi-Stage Gravity Concentration and Cyanidation Tests 77
Table 12.27: Overall Results of Multi-stage Gravity Concentration and Cyanidation 79
Table 12.28: Head Assay Result of Enma Master Composite 79
Table 12.29: Whole Ore Cyanidation Results of the Enma MC Sample 80
Table 12.30: Results of Gravity Concentration of the Enma MC Sample 80
Table 12.31: Results of Gravity Concentration-Cyanidation of the Enma MC Sample 80
Table 12.32: Summary of Ore Grindability 81
Table 13.1: Resource Database Summary for the Condor Project 84
Table 13.2: Density Data for Camp and Los Cuyes per Lithology Code 91
Table 13.3: Camp Composites For Each Domain 92
Table 13.4: Los Cuyes Domain Sample and Composite Au g/t Grades with Residual Sample Grades 94
Table 13.5: Los Cuyes Deculstered Average Values for Estimated Variables in Each Domain 94
Table 13.6: Soledad Sample and Composite Grades with Residual Sample Grades 96
Table 13.7: Soledad Declustered Average Values for Estimated Variables 96
Table 13.8: Enma Average Values for Estimated Varaibles 98
Table 13.9: Summary of Grade Capping Applied to Camp 98
Table 13.10: Summary of Grade Capping Applied to Los Cuyes 99
Table 13.11: Summary of Grade Capping Applied to Soledad 100
Table 13.12: Summary of Grade Capping Applied to Enma 100
Table 13.13: Camp Semi-Variogram Model Parameters 101
Table 13.14: Los Cuyes Semi-variogram Model Parameters 103
Table 13.15: Soledad semi-variogram model parameters 105
Table 13.16: Enma Semi-Variogram Model Parameters 106
Table 13.17: Block Model Summary 107
Table 13.18: Camp Search Parameters 108
Table 13.19: Los Cuyes Search Parameters 110
Table 13.20: Soledad Search Parameters 111
Table 13.21: Enma Search Parameters 112
Table 13.22: Camp per Domain Comparison Between Composites and Estimates 113
Table 13.23: Los Cuyes Per Domain Comparison Between Composites and Estimates 116
Table 13.24: Soledad Global Comparison Between Composites and Estimates 121
Table 13.25: Enma global comparison between composites and estimates 123
Table 13.26: Pit Shell Optimization Inputs for RPEEE 132
Table 13.27: Cut-off Grade Estimates for the Condor Project 133
Table 13.28: Payable Assumption Inputs 134
Table 13.29: Weighted Payable Estimates to Los Cuyes and Camp 134
Table 13.30: Underground Extraction Mineral Resource Statement for Condor Project, as of 28 February 2025 135
Table 13.31: Open Pit Mineral Resource Statement for Condor Project, as of 28 February 2025 135
Table 13.32: Global Block Model Quantities and Grade Estimates for Indicated and Inferred Category, Camp at Various cut-off Grades 136
Table 13.33: Global Block Model Quantities and Grade Estimates for Indicated and Inferred Category, Los Cuyes at Various cut-off Grades 138
Table 13.34: Global Block Model Quantities and Grade Estimates for Indicated and Inferred Category, Soledad at Various cut-off Grades 140
Table 13.35: Global Block Model Quantities and Grade Estimates for Indicated and Inferred Category, Enma at Various cut-off Grades 142

 

  
SRK CONSULTING (CANADA) INC.    MAY 12, 2025vi

CAPR003605    Silvercorp Metals Inc.

Independent Technical Report for the Condor Project, Ecuador

 

Table 13.36: Previous Condor Project Mineral Resources for selected projects Effective 28 July 2021 144
Table 14.1: Maynard (2004) Jeruslem Concession Mineral Resources 146
Table 14.2: Luminex (2021) Mineral Resource estimate for the Santa Barbara Deposit 146
Table 17.1: Proposed Initial Exploration Program for the Condor Project 149

 

Figures

Figure 3.1: Location of the Condor Project 6
Figure 3.2: Condor Concessions 7
Figure 4.1: Access to Condor Project 11
Figure 4.2: Typical Landscape in the Condor Project 13
Figure 6.1: Regional Geological Map of Condor Project 19
Figure 6.2: Property Geology Map of Condor Project 21
Figure 6.3: Diagrammatic Cross-section of Los Cuyes, Soledad, and Camp 22
Figure 6.4: Condor Volcanogenic Breccia and Dome Complex 25
Figure 8.1: 2024 SVM Relogging Program 27
Figure 9.1: Condor North Area Drilling Location Map 28
Figure 9.2: Condor Central Area Drilling Location Map 29
Figure 10.1: Drill Core Photograph and Logging Areas of Condor Project 34
Figure 10.2: Core Tray and Sample Storage of Condor Project 36
Figure 11.1: Rock Outcrops at the Condor Project 40
Figure 11.2: Condor Project Drillhole Sealing Mark 41
Figure 11.3: Selected CRMs Performances for the Camp Deposit 47
Figure 11.4: Selected CRMs Performances for the Los Cuyes Deposit 49
Figure 11.5: Selected CRMs Performances for the Soledad Deposit 51
Figure 11.6: Selected Blanks Performances Charts for Au 53
Figure 11.7: Coarse Duplicates Scatter and HARD Plot for Gold 55
Figure 11.8: Field Duplicates Scatter and HARD Plot for Gold 56
Figure 11.9: Pulp Duplicates Scatter and HARD Plot for the gold 57
Figure 11.10: Umpire samples Scatter for the Los Cuyes deposit 58
Figure 12.1: Gold Leach Curves of WOCN for Los Cuyes West and Breccia Pipe 63
Figure 12.2: Silver Leach Curves of WOCN for Los Cuyes West and Breccia Pipe 63
Figure 12.3: Flow Diagram for the Bulk Flotation-Cyanidation-Pb Flotation-Zn Flotation 67
Figure 12.4: Flowsheet of Bulk Flotation at Coarse Grind Size and Cyanide leach of Bulk Concentrate 76
Figure 12.5: Multi-Stage Gravity Concentration and Cyanidation Test Flowsheet 78
Figure 13.1: Plan View of Condor Project Geology at Surface 85
Figure 13.2: Cross Sections of the Veins CA-01 to CA-06 looking Northwest 86
Figure 13.3: Plan View of the Los Cuyes Shear Hosted Mineralization Models 87
Figure 13.4: Los Cuyes Vertical Cross Section looking North West 88
Figure 13.5: Soledad Deposit 0.2 g/t Constraining Gold Grade Shell 89
Figure 13.6: Enma Deposit 0.1 g/t Constraining Gold Grade Shell 90
Figure 13.7: Interval Length Histogram for the Camp Deposit 91
Figure 13.8: Gold Grades Before and After Compositing (Camp) 92
Figure 13.9: Interval Length Histogram of Los Cuyes 93
Figure 13.10: Interval Length Histogram of Soledad 95
Figure 13.11: Interval Length Histogram for Enma 97
Figure 13.12: Before and After Compositing (Enma) 97
Figure 13.13: Camp CA-03 Domain Gaussian Space Semi-Variogram Models 102
Figure 13.14: Los Cuyes LCW Domain Gaussian Space Semi-variogram Models 104
Figure 13.15: Soledad Gaussian Space Semi-variogram Models 105

 

  
SRK CONSULTING (CANADA) INC.    MAY 12, 2025vii

CAPR003605    Silvercorp Metals Inc.

Independent Technical Report for the Condor Project, Ecuador

 

Figure 13.16: Enma Semi-Variogram Models 106
Figure 13.17: Vertical Section of The Camp Ca-03 Domain Gold Distribution Looking North 114
Figure 13.18: Camp X Swath Plots for Gold, Silver, Lead and Zinc 115
Figure 13.19: Camp Z Swath Plots for Gold, Silver, Lead and Zinc 115
Figure 13.20: Vertical Section of the Los Cuyes LCW Domain Gold Distribution Looking North 117
Figure 13.21: Los Cuyes X Swath Plots for Gold, Silver and Zinc in the LCW Domain 118
Figure 13.22: Los Cuyes Z Swath Plots for Gold, Silver and Zinc in the Halo Domain 119
Figure 13.23: Soledad Vertical Cross Section Looking West Showing Gold Grade 120
Figure 13.24: Soledad Y and Z Swath Plots for Gold 121
Figure 13.25: Enma vertical Cross Section Looking South Showing Gold Grade 122
Figure 13.26: Enma X and Z Swath Plots for Gold 123
Figure 13.27: Plan Showing Camp Domain CA-03 Classification 125
Figure 13.28: Plan Showing Camp Domain CA-05 Classification 126
Figure 13.29: Section Showing Los Cuyes Domain NW5 Classification 127
Figure 13.30: Section Showing Los Cuyes Domain NW1 Classification 128
Figure 13.31: Section Showing Los Cuyes Domain LCW Classification 129
Figure 13.32: Section Showing Soledad Indicated Mineral Resource classification 130
Figure 13.33: Section Showing Enma Indicated Mineral Resource Classification 131
Figure 13.34: Camp Deposit Global Grade Tonnage Curve 137
Figure 13.35: Los Cuyes Deposit Global Grade Tonnage Curve 139
Figure 13.36: Soledad Deposit Global Grade Tonnage Curve 141
Figure 13.37: Enma Deposit Global Grade Tonnage Curve 143
Figure 14.1: Plan Map – Chinapintza Veins – Jerusalem Concession 145

 

  
SRK CONSULTING (CANADA) INC.    MAY 12, 2025viii

CAPR003605  ■  Silvercorp Metals Inc.
Independent Technical Report for the Condor Project, Ecuador

  

Executive Summary

 

Introduction

 

Silvercorp Metals Inc. (Silvercorp, SVM, the Company or the Client) commissioned SRK Consulting (Canada) Inc (SRK) to undertake an independent technical review of the Condor project (the Condor Project or the Project) located in Ecuador. The deliverable of this Project is a National Instrument 43- 101 compliant Independent Technical Report with an independent and unbiased view of the Project which will enable potential equity investors and possible future shareholders to review the Project’s operations.

 

The Condor Project consists of the Condor North area, the Condor Central area and the Condor South area. The Condor North area consists of the deposits at Los Cuyes, Soledad, Enma, Camp, and the Prometedor Prospect. The Condor Central area consists of the copper-gold and copper-molybdenum porphyries at Santa Barbara and El Hito. The Condor South area consists of the newly identified Nayumbi Prospect.

 

The Condor Project in this report refers to the Los Cuyes, Soledad, Enma and Camp deposits in the Condor North area.

 

The Report documents an updated Mineral Resource estimate for the Los Cuyes, Soledad, Enma and Camp Deposits following the guidelines of the Canadian Securities Administrators’ National Instrument 43-101 and Form 43-101 F1 (the “NI 43-101 Standard”) and in conformity with the generally accepted Canadian Institute of Mining, Metallurgy and Petroleum (the CIM)’s Definition Standards and the “Estimation of Mineral Resources and Mineral Reserves Best Practice Guidelines” (2019).

 

Property Description and Ownership

 

The Condor Project is located in the Province of Zamora-Chinchipe, near the Ecuador-Peru border and the southern end of the Cordillera del Condor. The Project is approximately 400 km south-southeast of Quito, 149 km east of the city of Loja, and 76 km east of the town of Zamora.

 

The ownership history of the Condor Project began with artisanal and small-scale miners operating in the area pre-1988. In 1988, modern exploration commenced through a joint venture between ISSFA and Prominex UK. This partnership lasted until 1991 when Prominex UK withdrew, and in 1993, TVX Gold, Inc. (TVX) and Chalupas Mining joined the venture. They remained involved until 2000, after which Goldmarca (formerly Hydromet Technologies Ltd.) formed a new joint venture with ISSFA in 2002. Goldmarca was rebranded to Ecometals Ltd. in 2007 and continued operations until the Ecuadorian government imposed a moratorium on mineral exploration from April 2008 to November 2009. In 2010, Ecometals sold its interest to Ecuador Capital, which was later renamed Ecuador Gold and Copper Corp. (EGX). Lumina Gold Corp (Lumina) acquired EGX in 2016, and in 2018, Lumina spun out Luminex Resources Corp. (Luminex), leading to the Condor Project being 90% owned by Condormining, a Luminex subsidiary, with ISSFA retaining a 10% stake. However, ISSFA has made no funding contribution to the continuing operation of the project; consequently, its share has been diluted

 

  
SRK CONSULTING (CANADA) INC.    MAY 12, 2025ix

CAPR003605  ■  Silvercorp Metals Inc.
Independent Technical Report for the Condor Project, Ecuador

 

to 1.3% to date. In January 2024, Adventus Mining Corporation (Adventus) merged with Luminex. In July 2024, Silvercorp acquired Adventus and assumed the ownership of the Condor Project.

 

Accessibility, Climate, Physiography, Local Resources and Infrastructure

 

Access to the project is provided by paved and gravel roads. The climate in the Project area is highland tropical, with an average daily temperature ranging from 21°C to 24°C, and an average annual rainfall of approximately 2,000 mm to 3,000 mm. There is a distinct annual rainy season that typically occurs between January and June.

 

The city of Loja (population ~181,000) is the largest regional centre in the area of the Project and will be a major source of basic goods and services for advanced phases of exploration as well as mine construction and operation. Initial estimates indicate that the national electric grid is capable of providing all necessary power to the Project. Current infrastructure at the Condor Project consists of a fully equipped 70-man exploration camp, located at 1,456 masl directly above the Camp deposit. The camp consists of dormitories, canteen, medical clinic, administrative offices, warehouse, emergency generator, water treatment plant, septic system, diesel storage tanks and fuelling station, a meteorological station, various security installations, and a large core logging and storage facility.

 

Ancillary core storage, warehousing, and waste segregation/accumulation facilities are also located near the camp. The camp is connected to the national grid and has full internet and cellular telephone access. The Congüime River and numerous smaller streams and springs within the Project concessions can serve as sources of water for all anticipated mining, mineral processing, potable usage, and other Project requirements.

 

The Project is located in steep, high-relief terrain, near the southern end of the Cordillera del Condor. Elevations range between 960 m and 1,830 m above sea level. The Condor Project area is subject to frequent landslides and mudflows, due to the steepness of terrain, underlying geology, periodically extreme precipitation events, and the accumulated exacerbating impacts of illegal mining clearances.

 

History

 

The exploration of the Condor Project area has been extensive and spans several decades.

 

From 1988 to 1991, ISSFA and Prominex UK conducted regional stream sediment sampling and geological mapping.

 

After TVX Gold, Inc. (TVX) and Chalupas withdrew in 2000, Goldmarca / Ecometals took over and continued with reconnaissance mapping, IP and magnetic surveys, and drilling 154 holes totaling 33,323m from 2002 to 2008.

 

The exploration halted due to a moratorium imposed from April 2008 to November 2009. Resuming in 2012, EGX focused on geological mapping, rock sampling, and diamond drilling 37 holes totaling 22,052m until 2016.

 

  
SRK CONSULTING (CANADA) INC.    MAY 12, 2025x

CAPR003605  ■  Silvercorp Metals Inc.
Independent Technical Report for the Condor Project, Ecuador

 

Under Lumina Gold Corp from 2016 to 2018, the Project saw additional mapping, sampling, and geophysical surveys, leading to the drilling of nine holes totaling 1,907m.

 

Since 2018, Luminex Resources Corp. has continued these efforts, conducting a property-wide airborne ZTEM geophysical survey and drilling 46 holes totaling 23,211m at the Camp deposit.

 

Despite extensive exploration efforts, the Condor Project has not yet achieved commercial mineral production. However, artisanal mining has been a significant activity in the area since the 1980s.

 

Geology and Mineralization

 

The Condor Project is located in the Cordillera del Condor in the Zamora copper-gold metallogenic belt. The Project area comprises epithermal gold-silver, porphyry copper-gold ±molybdenum, and numerous alluvial gold deposits.

 

The Condor Project's geology is both diverse and complex, particularly in the Condor North area. This region is characterized by distinctive low- to intermediate-sulphidation epithermal vein swarms located in the northern part. These vein swarms form a series of north-northwest-striking, narrow, high-grade gold and electrum-bearing manganoan carbonate veins, often accompanied by base metals and hosted in dacite porphyry. The Condor breccia, dyke, and dome complex is further divided into four main zones: Camp, Los Cuyes, Soledad and Enma. Gold-silver mineralization in these zones is linked with sphalerite-pyrite/marcasite veins, which typically occur within breccias, along the contacts of rhyolite dykes, and as replacements and disseminations. These veins are often disrupted by post- mineral extensional faults.

 

  
SRK CONSULTING (CANADA) INC.    MAY 12, 2025xi

CAPR003605  ■  Silvercorp Metals Inc.
Independent Technical Report for the Condor Project, Ecuador

 

Camp:  The Camp deposit features gold and silver mineralization linked to a swarm of northwest- striking rhyolite-dacite dykes, likely originating from a larger buried rhyolite intrusion. These dykes are concentrated at the contact between a volcanic/intrusive complex and a major granodiorite intrusion. The mineralized zone, dipping steeply at 85° to the northeast, extends over 700 m along strike and is 200 m wide. Gold occurs within veins containing pyrite, marcasite, iron-rich sphalerite (marmatite), galena, ± chalcopyrite, pyrrhotite, quartz, and rhodochrosite gangue. Host rocks include altered granodiorites, breccias, flow-banded rhyolite, and phreatomagmatic breccia. The area is capped by 30 to 80 m of trachyte to rhyolitic welded tuff, with the Camp ridge bounded by the Camp Fault and Piedras Blancas Fault.

 

Los Cuyes:  Los Cuyes is hosted within an oval-shaped diatreme measuring 450 m northeast- southwest, 300 m northwest-southeast, and extending to at least 350 m in depth. This diatreme, resembling an inverted cone plunging approximately 50° to the southeast, consists of an outer shell of polymictic phreatomagmatic breccia and an internal fill of well-sorted rhyolitic lapilli tuffs, breccias, and volcanic sandstones. Amphibolite and quartz arenite fragments occur around its periphery, with dacite and rhyolite ring dykes intruding the steep margins. Lithological contacts, such as dykes cutting through the diatreme and its outer breccia shell, favoured vein development. The mineralization and alteration at Los Cuyes post-date all local rock types, including blocks of the Hollín Formation, indicating that the mineralization is post-Early Cretaceous.

 

Soledad:  The Soledad Zone features a 700-meter diameter oval-shaped rhyolite intrusion within the Zamora Batholith, surrounded by discontinuous pyritic breccias. The overall mineralization at Soledad is described as a north-south elongated wine glass-shaped body, tapering between 200 to 300 m below the surface and extending approximately 110 m northwest by 50 m northeast. Sphalerite transitions to pyrite as the dominant sulphide at around 100 m below the surface, leading to diminished gold and silver grades similar to Los Cuyes.

 

Enma:  Gold and silver mineralization at Enma is hosted in a west-northwest-trending rhyolitic breccia that occurs at the contact between andesite lapilli tuffs and the Zamora batholith. The deposit has dimensions of 280 m east-northeast, is approximately 20 to 75 m wide, and has a vertical extent of 350 m. Alteration mineralogy is primarily chlorite with minor quartz-sericite ± alunite-kaolinite. Gold is associated with pyrite-sphalerite-quartz and locally rhodochrosite veins. At depths greater than 200 m, gold-poor, pyrite-pyrrhotite ± chalcopyrite veins are more dominant.

 

Deposit Types

 

Camp, Los Cuyes, Soledad and Enma Deposits are consistent with low- to intermediate sulphidation epithermal mineralization. Characteristics of such deposits are:

 

Occur at convergent plate settings, typically in calc-alkaline volcanic arcs.

 

Form at shallow depths (<2 km) from near-neutral pH, sulfur-poor hydrothermal fluids, often of meteoric origin, with metals derived from underlying porphyry intrusions.

 

Structural permeability created by hydrothermal fluid over-pressuring allows for mineralized fluids to permeate, with gold precipitated by boiling.

 

  
SRK CONSULTING (CANADA) INC.    MAY 12, 2025xii

CAPR003605  ■  Silvercorp Metals Inc.
Independent Technical Report for the Condor Project, Ecuador

 

Sub-types include sulphide-poor deposits with rhyolites, sulphide-rich deposits with andesites/rhyodacites, and sulphide-poor deposits with alkali rocks.

 

Hydrothermal alteration is zoned and subtle, characterized by sericite, illite, smectite, and carbonate.

 

Features quartz, quartz-carbonate, and carbonate veins with various textures.

 

Sulphide content varies (1-20%), typically <5%, with pyrite, sphalerite, galena, and low copper (chalcopyrite).

 

High gold, silver, arsenic, antimony, mercury, zinc, lead, selenium, and low copper, tellurium.

 

Exploration, Quality Assurance and Quality Control

 

Since 1994, the Condor Project has undergone extensive drilling by various operators. The drilling campaigns of Condor Project from 1994 to 2023, totalling 538 holes with 157,312 meters, focused primarily on the Condor North Area and Condor Central Area.

 

No QAQC data are available for the TVX Gold, Inc. (TVX) drilling programme.

 

From 2004 to August 2007, the Certified Reference Materials (CRMs or standards Standards), blanks and quarter core duplicate samples were used on the Project. The QAQC procedure from July 2007 to 2011 involved inserting a blank every 6 samples, a standard after 7 samples, a duplicate after 6 samples, followed by another blank. Checks by SRK indicate that this methodology was not strictly adhered to in terms of the number of blanks and standards. From July 2007, OREAS standards and blanks were used, mine waste material was no longer used.

 

During the Goldmarca / Ecuador Gold and Copper Corp. (EGX) drill programs from 2012 to 2014, CRMS, blanks and quarter core duplicate sample were inserted after every 20 samples as part of the QAQC procedure.

 

Quality control failures for programs from 2012–2015 were addressed with programs of remedial assay analysis.

 

During the 2017–2018 drill program, QAQC samples are inserted after every six core samples. These include three certified standards (high, medium and low gold grades), a blank, and a coarse duplicate.

 

During the 2019–2021 drill program, QAQC samples are inserted with the insert rate about 2% - 4% for each type, including the certified standards, blank, coarse duplicate and fine duplicates.

 

The author considers that quality control measures adopted for assaying of the Condor Mineral Resource drilling have established that the assaying is representative and free of any biases or other factors that may materially impact the reliability of the analytical results. The author considers that the sample preparation, security and analytical procedures adopted for Condor drilling provide an adequate basis for the current Mineral Resource estimates.

 

  
SRK CONSULTING (CANADA) INC.    MAY 12, 2025xiii

CAPR003605  ■  Silvercorp Metals Inc.
Independent Technical Report for the Condor Project, Ecuador

 

Data Verification

 

SRK conducted a site inspection of the Condor Project from June 19 to 20, 2024. The inspection was led by Principal Geologist Mark Wanless (QP) from SRK Canada, Falong, Hu (Principal Mining Consultant) and Yanfang Zhao (Principal Geologist) from SRK China, who carried out a series of verification steps. These included a thorough examination of the Project area, meetings with company representatives, and discussions with geologists regarding sample collection, preparation, storage, and QAQC procedures. The team also reviewed geological interpretations, inspected outcrops, mineralization, and fault structures, and verified drillhole sealing marks. Additionally, they visually checked stratigraphy against interpreted drilling sections and visited the drill core storage facility and core catalog room to assess the company’s core storage protocols and procedures.

 

The QP was provided the database named CN_DH_Export_Database_8Sept2023.xlsx which covers the QAQC data for several deposits from 1994 to 2023. A review of historical QAQC data was conducted by SRK.

 

Based on SRK’s site visit, review of the previous and ongoing exploration datasets, communication with the Condor’s technical personnel and consideration of the mineralization characteristics of the deposit, SRK is satisfied with the quality and result of the sample preparation and assay conducted by related analytical laboratories. The analytical procedures are consistent with generally accepted industry practices and the primary sample results are therefore suitably reliable for use in Mineral Resource estimation.

 

Mineral Processing and Metallurgical Testing

 

Mineralization of Los Cuyes, Camp, Soledad (San Jose) and Enma deposits comprise gold and silver with low-level base metal sulphides of copper, lead and zinc. The recovery target metals are gold and silver as dore by gravity concentration and cyanide leach, as well as copper, lead and zinc as flotation concentrates when their contents are high enough for economic recovery.

 

Cyanide leaching tests were conducted on all four deposit samples, including standard whole ore cyanidation (WOCN), carbon in leach (CIL) and gravity plus concentrate intensive cyanidation and tails WOCN. The results are summarised in Table i. All the samples from four deposits are amenable to WOCN, and there is no preg-robbing effect. For a San Jose sample with 2.72 g/t gold and 26.7 g/t, grind size of 90% passing 75 µm, and leaching for 72 hours, the gold and silver extractions reached 91.6% and 82.0%, respectively. For an Enma ore sample with 0.97 g/t gold and 36.8 g/t silver, grind size of 80% passing 75 µm, and leaching for 24 hours, the gold and silver extractions reached 74.2% and 67.9%, respectively.

 

The bulk rougher flotation was also investigated with the bulk concentrate being cyanide leached samples of Los Cuyes, Camp and San Jose. The cyanide leached bulk concentrate was floated again to produce the silver/lead concentrate and silver/zinc concentrate. The results are shown in Table ii. Overall gold recoveries of flotation and concentrate cyanide leach were 90.2% to 91.5% for Los Cuyes and 92.6% for Camp. The flotation of the concentrate cyanide leach residues likely produced saleable lead concentrate and zinc concentrate in some cases, depending on the feed grade and flotation operating conditions. The tests obtained a saleable zinc concentrate and a silver/lead concentrate for

 

  
SRK CONSULTING (CANADA) INC.    MAY 12, 2025xiv

CAPR003605  ■  Silvercorp Metals Inc.
Independent Technical Report for the Condor Project, Ecuador

 

the Los Cuyes samples, only a saleable lead/silver concentrate for the Camp sample. The San Jose sample at Soledad has not obtained a satisfied bulk flotation result likely due to overly coarse grind size. Enma has not been tested yet on bulk flotation. The bulk flotation and then concentrate cyanide leach followed by selective flotation to produce the silver/lead concentrate and zinc concentrate is a capital cost effective flowsheet, it can comprehensively recover the residual gold and silver from the cyanide residue. However, the overall gold recovery may be somewhat compromised, and the management of process waters will be complicated, because any residual cyanide in the process water will reduce gold recovery during flotation. Optimization test work of this flowsheet should be carried out on all the deposits.

 

Since gold and silver in the mineralized materials are easily cyanide leachable, in order to obtain a higher gold and silver recovery, the process flowsheet of cyanidation followed by flotation of the cyanide residue has also been preliminarily tested. The overall results are summarized in Table iii. This process flowsheet can achieve higher gold and silver recoveries than the process of bulk flotation – bulk concentrate cyanidation – cyanide residue separate flotation and does not have the issue of residual cyanide in the process water on gold recovery. Although the capital cost is higher, it is recommended that the detailed cyanide residue flotation tests be carried out on all of the master composite samples (MC) from the four deposits to demonstrate whether the marketable lead and zinc concentrates can be produced and to determine overall recoveries for gold, silver, lead, zinc and copper. A trade-off study between the two process flowsheets should be conducted during the next technical study phase.

 

Table i:     Cyanidation Test Results Summary - Gold and Silver Extractions

 

Composite WOCN CIL Gravity+WOCN
Au Ag Au Ag Au Ag
Camp-Low Grade191.8 49.5 92.1 41.5 92.9 45.6
Camp-Med Grade196.5 43.3 98.0 39.7 96.9 43.9
Camp-High Grade196.0 43.3 97.0 48.5 96.0 43.3
Los Cuyes-Low Grade187.5 27.2        
Los Cuyes-Med Grade190.8 37.5        
Los Cuyes-High Grade1 87.9 57.4        
Los Cuyes-Master187.1 49.4 89.1 47.7 85.9 54.5
Enma-Master174.2 67.9     71.5 67.0
San Jose291.6 82.0        
San Jose Master372.6 43.3 63.4 40.3    

Note: 1 grind size P80=75µm, leaching time 24 hours
  2 grind size P90=75µm, leaching time 72 hours
  3 grind size P80=106µm, leaching time 48 hours

  

  
SRK CONSULTING (CANADA) INC.    MAY 12, 2025xv

CAPR003605  ■  Silvercorp Metals Inc.
Independent Technical Report for the Condor Project, Ecuador

 

Table ii:     Overall Recovery of Bulk Flotation – Concentrate Cyanidation – Residue Flotation

 

        Grade Recovery (%)
Parameter Weight
%
Au
g/t
Au
g/t
Cu
%
Pb
%
Zn
%
Au Ag Cu Pb Zn
Los Cuyes - Low Grade                
Bulk Conc 10.2 8.40 104.8   0.39 2.57 95.2 85.7   81.6 58.5
Bullion           90.2 54.4      
Ag/Pb Conc. 0.08   1 ,748   23.19 10.69   10.3   38.8 2.1
Zn Conc 0.31   127.8   0.90 49.00   2.9   5.8 36.7
Overall Recovery - bullion plus saleable concentrate   90.2 64.7     36.7
Los Cuyes - High Grade           
Bulk Conc 13.9 28.67 256.1   1.25 4.77 95.0 87.4   83.9 71 .9
Bullion             91.5 46.1      
Ag/Pb Conc 0.21   2,653   32.33 9.66   12.7   38.6 2.2
Zn Conc 0.67   161.3 0.94 45.18 2.5 3.6 32.6
Overall Recovery - bullion plus saleable concentrate 91.5 58.8     32.6
Base Camp                    
Bulk Conc 14.4 32.1 187   1.0 5.6 98.5 96.3   94.5 78.8
Bullion             92.6 50.3      
Ag/Pb Conc 0.04 1.01 3,324   52.4 3.86 0.01 6.45   23.4 0.16
Zn Conc 0.14 0.83 316.7   4.28 2.32 0.05 2.31   7.28 0.39
Overall Recovery - bullion plus saleable concentrate 92.6 56.7   23.4  

 

Table iii:     Overall Recovery of Cyanidation - Residue Flotation

       

Grade

    Recovery (%)  

Parameter

Weight

%

Au
g/t

Ag
g/t

Cu

%

Pb

%

Zn

%

Au

Ag

CuPb Zn
Los Cuyes - Low Grade                     

Bullion

   

 

 

 

  87.1 49.4     
Cu/Pb Conc 0.1 3.81 650 5.88 16.2 0.490.78 18.6 34.9 61.9 0.6
Overall Recovery - bullion plus saleable concentrate   87.1 49.4      
Camp                      

Bullion

            95.7

44.6
     
Ag/Pb Conc 0.1 3.28 3,348 0.8 44.2 20 0.08 12.3 2.6 38.1 2.4
Zn Conc 1.3 2.52 218.7 1.37 1 45.3 0.68 8.7 47.7 9.3 59.7
Overall Recovery - bullion plus saleable concentrate 96.5 65.6      

 

  
SRK CONSULTING (CANADA) INC.    MAY 12, 2025xvi

CAPR003605  ■  Silvercorp Metals Inc.
Independent Technical Report for the Condor Project, Ecuador

 

Mineral Resource Estimates

 

Condor Project comprises several deposits, however this section only focuses on the Camp, Los Cuyes, Soledad and Enma deposits in the Condor North area, which are included in the Mineral Resources estimation.

 

The Mineral Resource estimation work of Condor Project was completed by SRK in 2025. The estimates are based on drilling samples information available up to 2023. The QP believes the drilling information is sufficiently reliable to interpret with confidence the boundaries for the deposits and that the assay data are sufficiently reliable to support Mineral Resource estimation. Mr Mark Wanless (Pr.Sci.Nat, FGSSA), and Ms Yanfang Zhao (MAusIMM), who are Principal Geologists from SRK have reviewed the drillhole database, geological model and the mineralisation domains generated by SVM, made some adjustment, performed the grade estimation, classified the Mineral Resources and prepared the Mineral Resource estimate using Datamine, Isatis.Neo and Leapfrog Geo and Edge.

 

The Qualified Person responsible for the Mineral Resources is Mr Mark Wanless, who is a full time employee of SRK Consulting (Canada) Inc. (SRK Canada) and registered with the South African Council for Natural Scientific Professionals as Pr.Sci.Nat, 400178/05, Fellow of the Geological Society of South Africa, Member of the Geostatistical Association of South Africa and a Member of the South African Institute for Mining and Metallurgy (SAIMM). Mr. Mark Wanless visited the Condor Project between the 19th and 20th of June 2024.

 

The Mineral Resources have been estimated in accordance with generally accepted CIM Definition Standards and are reported in accordance with the Stock Exchange listing requirements.

 

The Company considered future operation on Soledad and Enma using surface mining. However at Camp and Los Cuyes the Company plans underground mining due to the steep terrain conditions, relative complexity, high grade tabular mineralization, and that the surface infrastructure might best be located in Camp and/or Los Cuyes area.

 

The optimization parameters reflect a conventional open pit operation although the cost and revenue assumptions on Soledad and Enma used are not related to any mine plan or financial analysis, they were used only to define the reasonable prospects for eventual economic extraction (RPEEE) envelope, and the figures were derived from the current information.

 

For the higher-grade and thicker tabular domains at Camp and Los Cuyes, there is the opportunity of using a bulk mining method such as long hole open stoping for underground extraction. The thinner tabular domains at Camp and Los Cuyes require using more selective mining methods such as short hole shrinkage and/or cut and fill methods. The Company has extensive experience on selective mining methods and advised that they would like to consider a selective method as the primary approach. Therefore, a breakeven cut-off grade was calculated to determine the subset of the estimated blocks that can be economically exploited using shrinkage or cut and fill mining.

 

The commodity prices are sourced from an independent analyst, Consensus Market Forecast (CMF) for gold, silver, lead, and zinc. The projected outlook (in real USD) was issued by CMF in February 2025. The long-term prices were used for the consideration of the Reasonable Prospect for Eventual Economic Extraction (RPEEE).

 

  
SRK CONSULTING (CANADA) INC.    MAY 12, 2025xvii

CAPR003605  ■  Silvercorp Metals Inc.
Independent Technical Report for the Condor Project, Ecuador

 

Within the current mining license area, as of 31 December 2024, Mineral Resources are reported for the Condor Project, above a COG of 2.2 g/t gold equivalent for Camp and Los Cuyes which are amenable to underground extraction, and 0.6 g/t and 0.5 g/t gold equivalent for Enma and Soledad respectively which are amenable for open pit extraction.

 

For the open pit deposits, the Mineral Resource is constrained by a conceptual pit, designed using Whittle software. For the underground mineral Resources, SRK used a Mineable Shapes Optimiser (MSO) to outline areas of the mineralization domain that have suitable continuity and grade to sustain underground mining operations. SVM intend using a highly selective mining method (shrinkage or cut and fill) for which the MSO process is not well suited. Therefore, SRK reported the underground Mineral Resources using only a cut off value and excluding small and isolated areas which are unlikely to be practically extractable. The summary of the estimated Mineral Resources is shown in Table iv for Mineral Resources with underground mining potential, and in in Table v for Mineral Resources with open pit mining potential.

 

Table iv:     Underground Extraction Mineral Resource Statement for Condor Project, as of 28 February 2025

 

  Average Grade Contained Metal
Deposit Tonnes AuEq Au Ag Pb Zn AuEq Au Ag Pb Zn
  (Mt) (g/t) (g/t) (g/t) (%) (%) (koz) (koz) (koz) (lb’000) (lb’000)
Indicated
Camp 2.45 3.44 3.17 18.68 0.08 0.73 271 250 1,471 4,355 39,454

Los

Cuyes

0.72 4.04 3.82 22.9 0.09 0.63 93 88 528 1,366 9,966
Total 3.17 3.58 3.32 19.63 0.08 0.71 365 338 1,999 5,721 49,420
Inferred
Camp 7.9 3.38 3.07 20.59 0.08 0.89 859 780 5,229 13,271 154,944
Los
Cuyes
4.2 4.71 4.47 24.64 0.12 0.53 636 603 3,327 10,741 49,278
Total 12.1 3.84 3.55 22.00 0.09 0.77 1,495 1,383 8,556 24,012 204,222

 

Sources: SRK 2025

Notes: Mineral resources are reported above an underground extraction economic cut off value for Camp and Los Cuyes. Mineral Resources are not Mineral Reserves and do not have demonstrated economic viability. All figures are rounded to reflect the relative accuracy of the estimate.

 

The resource statement does not include mineralization in the Halo domain of the Los Cuyes, and its economic potential remains to be further investigated in future studies.

 

Underground Mineral Resources are reported at a cut-off grade of 2.2 g/t AuEq at Camp and Los Cuyes. Underground cut off grades have been determined using a gold price of USD/oz 2,200, silver price of USD/oz 27, zinc price of USD/t 2,650 and lead price of USD/t 1,950.

 

1 troy ounce = 31.1034768 metric grams.

 

  
SRK CONSULTING (CANADA) INC.    MAY 12, 2025xviii

CAPR003605  ■  Silvercorp Metals Inc.
Independent Technical Report for the Condor Project, Ecuador

 

Table v:     Open Pit Mineral Resource Statement for Condor Project, as of 28 February 2025

 

  Average Grade Contained Metal
Deposit Tonnes AuEq Au Ag Pb Zn AuEq Au Ag Pb Zn
  (Mt) (g/t) (g/t) (g/t) (%) (%) (koz) (koz) (koz) (lb’000) (lb’000)
Indicated
Soledad 4.03 1.14 1.06 7.05 0.05 0.56 148 138 912 4,365 49,882
Enma 0.03 1.05 0.97 7.11 0.07 0.30 1 1 7 46 214
Total 4.06 1.14 1.06 7.05 0.05 0.56 149 139 920 4,411 50,097
Inferred
Soledad 14.15 0.83 0.76 5.86 0.04 0.51 375 346 2,664 12,819 158,009
Enma 0.02 0.74 0.56 16.07 0.06 0.20 1 0 12 33 103
Total 14.17 0.82 0.76 5.87 0.04 0.51 376 347 2,676 12,851 158,112

 

Sources: SRK 2025

 

Notes: Mineral resources are reported in relation to a conceptual pit shell for Soledad and Enma. Mineral Resources are not Mineral Reserves and do not have demonstrated economic viability. All figures are rounded to reflect the relative accuracy of the estimate.

 

Open pit Mineral Resources are reported at a cut-off grade of 0.6 g/t AuEq for Enma and 0.5 g/t AuEq for Soledad. Open pit optimizations have been determined using a gold price of USD/oz 2,200, silver price of USD/oz 27, zinc price of USD/t 2,650 and lead price of USD/t 1,950.

 

1 troy ounce = 31.1034768 metric grams.

 

Interpretation and Conclusions

 

SVM has reviewed, re-logged, and remodelled the mineralization at the Condor Project. At the Los Cuyes and Camp deposits the updated model of mineralization has included identification of several high-grade tabular domains which are potentially amenable to extraction using underground mining methods. At Soledad, Enma and outside of the high-grade domains at Los Cuyes SVM have modelled a lower grade disseminated mineralization which has the potential for extraction using an open pit mining method.

 

This mineralization interpretation at Los Cuyes is a change from the previous model which only considered a disseminated mineralization style, and did not isolate the high-grade zones separately. For some domains at Los Cuyes (such as the LCW domain) the data strongly support the revised interpretation, with good continuity in the mineralization observed over the project area. While for other domains, the continuity is less clear, and the quantity of data supporting these is less, resulting in lower confidence in these interpretations. The lateral extents of some of the domains are based on wider spaced drilling which naturally carries some additional risk to the confidence in the interpretation of the domain continuity.

 

At Camp, the previous models relied on interpolated domain definition using indicators, and the current interpretation is supported by a more geologically rigorous interpretation using a combination of the grade and geological logs to link up intersections between drill holes into more coherent and continuous domains.

 

  
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CAPR003605  ■  Silvercorp Metals Inc.
Independent Technical Report for the Condor Project, Ecuador

 

The geological interpretation at Soledad and Enma is not as well developed as that of Los Cuyes and Camp, relying on grade shells to constrain the mineralization. At Soledad, there is sufficient dense sampling in several locations to confirm the continuity of the mineralization despite the lower understanding of the mineralization controls, and SRK considers this sufficient to support an Indicated Mineral Resource classification.

 

For all the deposits, the metallurgical test work indicated that there are reasonable prospects for achieving the recoveries applied to the economic assessment. However, further work is required to be able to confirm the optimal processing configuration for each style of mineralization. As such, there is a risk that these recovery factors may change with additional test work and depending on the ultimate processing flow sheet that is selected if the project is developed.

 

Recommendations

 

In order to confirm the interpretation of the high-grade domains at Camp and Los Cuyes, SRK recommends that a phased exploration program should be undertaken. SVM has planned an initial two-phase exploration program of surface drilling. The initial phase plans for drilling six holes at Los Cuyes with an average length of approximately 400 m for a total of 2,470 m, and a second phase plans for drilling four holes split between Los Cuyes and Camp totalling 1,030 m.

 

Pending the approval of an environmental permit which is in progress at present, SVM plans to develop underground access drives to intersect the mineralization, and to provide platforms for drilling which will allow for better targeted drilling of shorter holes from the underground development. SVM has not yet developed a detailed development and drilling plant, as this is contingent on the outcomes of the initial surface drilling results and the approval of the environmental permit applications.

 

SRK recommends that the two mineral processes of "bulk flotation – bulk concentrate cyanidation - cyaniding residue separation flotation " and "cyanidation - cyaniding residue flotation" should be tested in detail, and the trade-off study between the two processes should be conducted according to the final test results.

 

  
SRK CONSULTING (CANADA) INC.    MAY 12, 2025xx

CAPR003605  ■  Silvercorp Metals Inc.
Independent Technical Report for the Condor Project, Ecuador

 

1   Introduction and Terms of Reference

 

The Condor Project is located in the Province of Zamora-Chinchipe, near the Ecuador-Peru border and the southern end of the Cordillera del Condor. Silvercorp took ownership of the Condor Project during 2024 through the acquisition of Adventus Mining Corporation.

 

As part of the advancement of the project, Silvercorp aims to update the Mineral Resource estimates, with underground mining of the Camp and Los Cuyes deposits being the primary focus, and open pit mining of the Soledad and Enma deposits.

 

SRK Consulting (China) (SRK CN) was previously engaged in May 2024 by Silvercorp to undertake a due diligence audit of the Adventus Mining Corporation's assets in Ecuador in relation to a possible stock exchange listing. A team of consultants from SRK CN and SRK Consulting (North America) undertook an audit including a site visit to the Condor Project during June 2024.

 

This technical report summarizes the technical information available on the Condor Project and demonstrates that the Condor Project clearly qualifies as an “Advanced Exploration Property”. In the opinion of the QP, this property has merit warranting additional exploration expenditures. An exploration work program is recommended comprising diamond core drilling, open pit and underground development to facilitate exploration drilling, and geological and Mineral Resource modelling.

 

The sources of information and data contained in the technical report include a review of all relevant information and documents provided by Silvercorp as of December 2024.

 

This technical report was prepared following the guidelines of the Canadian Securities Administrators’ National Instrument 43-101 (NI 43-101) and Form 43-101F1. The Mineral Resource Statement reported herein was prepared in conformity with generally accepted CIM Estimation of Mineral Resources and Mineral Reserves Best Practice Guidelines.

 

1.1  Scope of Work

 

The scope of work is focused on an update of the Mineral Resource estimates for the Camp and Cuyes deposits for which there is additional data subsequent to the June 2024 review, but to also include updates on the Soledad and Enma deposits for which there is no additional data, except for a revised geological model generated by Silvercorp. During the site visit in June 2024, it was apparent that the understanding of the geology and the controls on the mineralization has evolved since the previous Mineral Resource estimates were undertaken. SRK and Silvercorp agreed that the estimates for these deposits needed to be updated to reflect this understanding.

 

The detailed items for which the consultants from SRK are responsible include:

 

Update the drilling, QAQC review and reporting for the additional data generated subsequent to the 2024 review.

 

Update the Los Cuyes Mineral Resource model, using the updated Silvercorp geological model, to include the latest drilling and the high-grade target of Los Cuyes.

 

  
SRK CONSULTING (CANADA) INC.    MAY 12, 20251

CAPR003605  ■  Silvercorp Metals Inc.
Independent Technical Report for the Condor Project, Ecuador

 

Review and update the Camp, Soledad and Enma Mineral Resource models using geological models generated by Silvercorp.

 

Establish a potential underground Mineral Resource at Los Cuyes using the same parameters as Camp. Update the reporting constraints for the Enma and Soledad deposits using agreed commodity price estimates and mining costs.

 

Determine with Silvercorp the preferred mining approach for the declaration of Mineral Resources on each deposit.

 

Deliver an independent Technical Report (the Technical Report) with an updated Mineral Resource estimate prepared in accordance with National instrument 43-101 - Standards of Disclosure for Mineral Projects (NI 43-101) for filing with applicable securities commissions with sign off by the SRK team as Qualified Persons.

 

1.2 Work Program

 

The Mineral Resource statement reported herein is a collaborative effort between Silvercorp and SRK personnel. The exploration database was compiled and maintained by Silvercorp and was audited by SRK. The geological model and outlines for the gold mineralization were constructed by Silvercorp and reviewed and in the case of Enma, modified by SRK. In the opinion of SRK, the geological model is a reasonable representation of the distribution of the targeted mineralization at the current level of sampling. The geostatistical analysis, variography, and grade models were completed by SRK during the months of January 2025 to March 2025.

 

The Mineral Resource Statement reported herein was prepared in conformity with the generally accepted CIM Exploration Best Practices Guidelines and CIM Estimation of Mineral Resource and Mineral Reserves Best Practices Guidelines. This technical report was prepared following the guidelines of the Canadian Securities Administrators’ NI 43-101 and Form 43-101 F1.

 

1.3 Basis of Technical Report

 

This report is based on information collected by SRK consultants during a site visit in June 2024, and on additional information provided by Silvercorp throughout the course of SRK’s investigations. SRK has no reason to doubt the reliability of the information provided by Silvercorp. This technical report is based on the following sources of information:

 

Discussions with Silvercorp personnel.

 

Inspection of the Condor project area, including outcrop and drill core.

 

Review of exploration data collected by Silvercorp.

 

  
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1.4 Qualifications of SRK and SRK Team

 

The SRK Group comprises more than 1,700 professionals, offering expertise in a wide range of resource engineering disciplines. The independence of the SRK Group is ensured by the fact that it holds no equity in any project it investigates and that its ownership rests solely with its staff. These facts permit SRK to provide its clients with conflict-free and objective recommendations. SRK has a proven track record in undertaking independent assessments of Mineral Resources and mineral reserves, project evaluations and audits, technical reports and independent feasibility evaluations to bankable standards on behalf of exploration and mining companies, and financial institutions worldwide. Through its work with a large number of major international mining companies, the SRK Group has established a reputation for providing valuable consultancy services to the global mining industry.

 

To complete the scope of work detailed above, SRK appointed a team of professionals sourced from the SRK Toronto and SRK China offices under the supervision of Mr. Mark Wanless, Pr.Sci.Nat, a Principal Consultant based out of the SRK Toronto office. Ms. Bonnie Zhao is responsible for the data review, QAQC validation and descriptive sections of the technical report. Mr. Falong Hu is responsible for the mining related activities and for the calculation of the required reporting constraints such as open pit shells, and cut-off grades. Mr. Wanless takes the role as the Qualified Person for the reporting on Mineral Resources with support from Mrs. Zhao.

 

1.5  Site Visit

 

In accordance with NI 43-101 guidelines, Mr. Wanless, Ms. Zhao, and Mr. Hu travelled to the Condor Project in June 2024 to undertake an inspection of the project, the drill core available at the Camp site for these projects, and to review the exploration procedures, data capture and geological interpretation with the Silvercorp exploration team.

 

The SRK team was given full access to relevant data and conducted interviews with exploration staff to obtain the information required for technical reporting.

 

1.6  Acknowledgement

 

SRK would like to acknowledge the support and collaboration provided by Silvercorp personnel for this assignment. Their collaboration was greatly appreciated and instrumental to the success of this project.

 

1.7  Declaration

 

SRK’s opinion contained herein and effective 28 February 2025 is based on information collected by SRK throughout the course of SRK’s investigations. The information in turn reflects various technical and economic conditions at the time of writing this report. Given the nature of the mining business, these conditions can change significantly over relatively short periods of time. Consequently, actual results may be significantly more or less favourable.

 

  
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This report may include technical information that requires subsequent calculations to derive subtotals, totals, and weighted averages. Such calculations inherently involve a degree of rounding and consequently introduce a margin of error. Where these occur, SRK does not consider them to be material.

 

SRK is not an insider, associate or an affiliate of Silvercorp, and neither SRK nor any affiliate has acted as advisor to Silvercorp, its subsidiaries or its affiliates in connection with this project. The results of the technical review by SRK are not dependent on any prior agreements concerning the conclusions to be reached, nor are there any undisclosed understandings concerning any future business dealings.

 

  
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2  Reliance on Other Experts

 

SRK has not performed an independent verification of land title and tenure information as summarized in Section 3 of this report. SRK did not verify the legality of any underlying agreement(s) that may exist concerning the permits or other agreement(s) between third parties, but have relied on Flor, Bustamante, Pizarro, Hurtado Abogados, as expressed in a legal opinion provided to SVM on 26 August 2024. A copy of the title opinions is provided in Appendix A. The reliance applies solely to the legal status of the rights disclosed in Section 3.

 

  
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3 Property Description and Location

 

3.1 Property Location

 

The Condor Project is located in the Province of Zamora-Chinchipe, near the Ecuador-Peru border and the southern end of the Cordillera del Condor (Figure 3.1). The Project is approximately 400 km south- southeast of Quito, 149 km east of the city of Loja, and 76 km east of the town of Zamora. The approximate centre of the Project properties is located at 95523500 m North and 768000 m East (geographic projection: Provisional South American Datum 1956, UTM Zone 17M).

 

Figure 3.1:     Location of the Condor Project

 

 

 

  
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3.2  Mineral Tenure

 

The Condor Project consists of nine concessions in alphabetical order: Chinapintza, Escondida, FADGOY, FJTX, Hitobo, Santa Barbara, Viche Congüime I, Viche Congüime II, Viche Congüime III (Figure 3.2).

 

Figure 3.2:     Condor Concessions

 

 

 

The mining concessions are held under Condormining S.A, Corporación FJTX S.A, and Bestminers S.A., subsidiaries of Adventus Mining Corporation which was acquired by SVM in 2024. Adventus Mining Corporation owns 100% of Ecuador Gold Holdings Ltd., which owns 98.73% of Condormining S.A through its 100% owned subsidiary EMH S.A.. Corporación FJTX is owned by Adventus Mining Corporation through EMH S.A., which holds 99.974% of the common shares of Corporación FJTX. Bestminers S.A. is 98.73% owned by Adventus Mining Corporation through EMH S.A.

 

Condormining S.A. holds four mining concessions that are part of the Condor Project, namely:

 

Viche Congüime Cuerpo 1 (registered May 20, 2010, valid for ~21 years).

 

Viche Congüime Cuerpo 2 (registered May 21, 2010, renewed in 2021 for 25 years).

 

  
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Viche Congüime Cuerpo 3 (registered May 20, 2010, valid for ~22 years).

 

Hitobo (registered May 25, 2010, valid for ~21 years).

 

Corporación FJTX S.A. holds four mining concessions also included in the Condor Project, namely:

 

Escondida (registered February 17, 2017, valid for 25 years).

 

Santa Elena (registered February 17, 2017, valid for 25 years).

 

FJTX (registered May 25, 2010, valid for ~21 years).

 

Fadgoy (registered May 20, 2010, valid for ~21 years) Silvercorp Legal Opinion.

 

Bestminers S.A. holds the Chinapintza concession, which was created from a division of Viche Congüime Cuerpo I in 2014. The concession is valid for ~17 years (since February 6, 2014).

 

3.3 Underlying Agreements

Condormining previously held a joint venture agreement with Minera Guangsho Ecuador and JV Chinapintza Mining S.A. (signed November 2, 2012). This agreement was terminated on April 29, 2016, but Condormining still owns 30% of JV Chinapintza Mining S.A., which is undergoing liquidation.

 

3.4 Environmental Regulations and Permitting

Currently, the Condor Mining Project holds an active Environmental License for advanced exploration activities, formalized by the Ministry of the Environment, Water, and Ecological Transition (MAATE) through Resolution No. 267 dated April 22, 2013.

However, the Ministry of Energy and Mines (MEM), through an official administrative resolution, has categorized the mining concessions of the Cóndor project under the small-scale mining regime. This categorization provides full legal support for initiating processes related to regularization, monitoring, mining control, and environmental management based on the established mining rights.

The Mineral Resources in the Condor North area are located within the three northernmost contiguous concessions shown in Figure 3.2. According to MEM and MAATE, advanced exploration works have been conducted in these concessions since 2013 in compliance with an approved EIS (Ambienconsul, 2006), biennial environmental audits, and regularly updated PMAs.

From February 19, 2025, the environmental regularization process for a new EIS under the small-scale mining regime was initiated via the Single Environmental Information System (SUIA) for the simultaneous phases of exploration, exploitation, and beneficiation of metallic minerals within an operational area inside the concessions.

The Mining Law allows concessionaires to enter pre-negotiation agreements with the Government of Ecuador related to the development of exploitation contracts. Such discussions may commence following a formal request during the Economic Evaluation Period.

 

  
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Before the construction of the mine and the commencement of mineral production, the Condor Project will be subject to the guidelines and directives required by the current Ecuadorian laws and regulations on mining and environment. Considering previous experience with projects of a similar scale in Ecuador, it is estimated that the main permitting actions will take up to 24 months to complete. These actions are summarized in the following: Change of Mining Phase, Environmental Licensing Process, Water Permits, Safety and Health Planning Actions, Electricity-Related Permits, Fuel and Explosives Permits, among others.

 

3.5  Mining Rights in Condor Project

In Ecuador, mining concessions are granted by the Ministry of Energy and Mines (MEM) through a Mining Title. Condormining is the lawful title holder of four mining concessions. The Condormining and Corporación FJTX S.A. FJTX and Fadgoy concessions were originally granted in 2001. In 2009, the Mining Law was reformed and it provided that existing mining titles shall be substituted with new mining titles in accordance with the new provisions of the Mining Law. Therefore, in 2010, new/substituted mining titles were granted to Condormining and Corporación FJTX S.A. for these six concessions. The concession information is summarized in Table 3.1 to Table 3.3.

 

Table 3.1:     Condormining Concessions

 

Concession Name Cadastral
Code
Surface Area
(hectares)
Registration
date1
Term of the concession2
Viche Congüime Cuerpo 1 2024 1,930 May 20, 2010 21 years, 3 months, 11 days
Viche Congüime Cuerpo 2 2024A 2,410 May 21, 2010 25 years counted since February 4, 2021 because it was renewed for additional 25 years
Viche Congüime Cuerpo 3 500802 2,501 May 20, 2010 22 years, 11 months, 5 days
Hitobo 500115 5,850 May 25, 2010 21 years, 4 months, 17 days

 Sources: SVM provided Independent Legal Opinion – Flor, Bustamante, Pizarro, Hurtado
1Date the Mining Title was registered in the Mining Register
2Term of the concession (counted since the date of registration in the Mining Registry)

 

Table 3.2:     Corporación FJTX S.A. Concessions

 

Concession Name Cadastral
Code
Surface Area
(hectares)
Registration
date1
Term of the concession2
Escondida 50000497 1000 17/02/2017 25 years
Santa Elena 50000655 615 17/02/2017 25 years
FJTX 500135 960 25/05/2010 21 years, 4 months, 17 days
Fadgoy 500245 199 20/05/2010 21 years, 3 months, 25 days

Sources: SVM provided Independent Legal Opinion – Flor, Bustamante, Pizarro, Hurtado

1Date the Mining Title was registered in the Mining Register
2Term of the concession (counted since the date of registration in the Mining Registry)

 

  
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Table 3.3:     Bestminers S.A. Concessions

 

Concession Name Cadastral
Code
Surface Area
(hectares)
Registration
date1
Term of the concession2
Chinapintza 2024.1 210.02 6/02/2014 17 years, 7 months, 2 days

Sources: SVM provided Independent Legal Opinion – Chinapintza

1Date the Mining Title was registered in the Mining Register
2Term of the concession (counted since the date of registration in the Mining Registry)

 

  
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4  Climate, Local Resources, Infrastructure, and Physiography
4.1  Accessibility

The Condor Project is located along the Ecuador-Peru border in southeast Ecuador, approximately 149 km southeast of the City of Loja and 76 km east of the town of Zamora in the province of Zamora- Chinchipe (Figure 4.1). Access is provided by paved and gravel roads.

 

Figure 4.1:     Access to Condor Project

 

 

4.2  Climate

The climate in the Project area is highland tropical, with an average daily temperature ranging from 21°C to 24°C, and an average annual rainfall of approximately 2,000 mm to 3,000 mm. There is a distinct annual rainy season that typically occurs between January and June. A meteorological station has been fully operational at Condor Camp (at 1,456 masl) since January 2021. Relevant historical rainfall data are also available from the National Institute of Meteorology and Hydrology (Instituto Nacional de Meteorología en Hidrología (INAMHI)) stations in Yantzaza and El Pangui; however, neither station is currently operational.

 

  
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4.3  Local Resources and Infrastructure

The city of Loja (population ~181,000) is the largest regional centre in the area of the Project and will be a major source of basic goods and services for advanced phases of exploration as well as mine construction and operation. Loja is served by regular daily flights with Quito via Ciudad de Catamayo Airport, located 20 km to the west. Skilled labour can be retained in Loja and Zamora and towns closer to the Project; unskilled labour is typically sourced in the smaller villages nearest to the Project.

The Project is connected to Loja, Zamora (population ~14,000) and other regional centres via the national highway network).

Initial estimates indicate that the national electric grid is capable of providing all necessary power to the Project.

Current infrastructure at the Condor Project consists of a fully equipped 70-man exploration camp, located at 1,456 masl directly above the Camp deposit. The camp consists of dormitories, canteen, medical clinic, administrative offices, warehouse, emergency generator, water treatment plant, septic system, diesel storage tanks and fuelling station, a meteorological station, various security installations, and a large core logging and storage facility. Ancillary core storage, warehousing, and waste segregation/accumulation facilities are also located near the camp. The camp is connected to the national grid and has full internet and cellular telephone access.

The Congüime River and numerous smaller streams and springs within the Project concessions can serve as sources of water for all anticipated mining, mineral processing, potable usage, and other Project requirements.

 

4.4  Physiography

The Condor Project is located in steep, high-relief terrain, near the southern end of the Cordillera del Condor. Elevations range between 960 m and 1,830 m above sea level. The Project drains into the Congüime River, which flows to the Nangaritza River, a main tributary of the Zamora River.

The Condor Project area is surrounded by secondary tropical forest (Figure 4.2), which has been heavily impacted by illegal mining and other intrusive anthropic activities for at least the last 30-40 years. The Condor Project area is subject to frequent landslides and mudflows, due to the steepness of terrain, underlying geology, periodically extreme precipitation events, and the accumulated exacerbating impacts of illegal mining clearances.

 

  
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Figure 4.2:     Typical Landscape in the Condor Project

 

 

  
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5  History
5.1  Ownership History

The ownership history of the Condor Project commenced with artisanal and small-scale miners operating in the area since pre-1988. In 1988, modern exploration commenced through a joint venture between ISSFA and Prominex UK. This partnership lasted until 1991 when Prominex UK withdrew, and in 1993, TVX Gold, Inc. (TVX) and Chalupas Mining joined the venture. They remained involved until 2000, after which Goldmarca (formerly Hydromet Technologies Ltd.) formed a new joint venture with ISSFA in 2002.

Goldmarca rebranded to Ecometals Ltd. in 2007 and continued operations until the Ecuadorian government imposed a moratorium on mineral exploration from April 2008 to November 2009. In 2010, Ecometals sold its interest to Ecuador Capital, which was later renamed Ecuador Gold and Copper Corp. (EGX). Lumina Gold Corp (Lumina) acquired EGX in 2016, and in 2018, Lumina spun out Luminex Resources Corp. (Luminex), making the Condor Project 90% owned by Condormining, a Luminex subsidiary, with ISSFA retaining a 10% stake. ISSFA has however not contributed any funding to the continuing operation of the project, and consequently its share has been diluted to 1.3% to date. In January 2024, Adventus Mining Corporation (Adventus) merged with Luminex.

In July 2024, Silvercorp acquired Adventus and assumed the ownership of the Condor Project.

 

5.2  Exploration History

 

The exploration of the Condor Project area has been extensive and spans several decades.

 

From 1988 to 1991, ISSFA and Prominex UK conducted regional stream sediment sampling and geological mapping. When TVX Gold, Inc. and Chalupas Mining joined in 1993, they expanded the exploration program to include soil, rock, and stream sampling, trenching, geophysical surveys, and drilling 195 holes totalling 42,101.5 m. They also completed 1,081 m of underground development at the Chinapintza veins.

 

After TVX and Chalupas withdrew in 2000, Goldmarca / Ecometals took over and continued with reconnaissance mapping, IP and magnetic surveys, and drilling 154 holes totalling 33,322.9 ms from 2002 to 2008.

 

Exploration was stopped due to a moratorium imposed from April 2008 to November 2009. Resuming in 2012, EGX focused on geological mapping, rock sampling, and diamond drilling 37 holes totalling 22,051.7 m until 2016.

 

Under Lumina Gold Corp from 2016 to 2018, the project saw additional mapping, sampling, and geophysical surveys, leading to the drilling of nine holes totalling 1,907.4 m.

 

Since 2018, Luminex Resources Corp. has continued these efforts, conducting a property-wide airborne ZTEM geophysical survey and drilling 28 holes totalling 14,801 m at the Camp deposit.

 

  
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Since the early 1980s, extensive geochemical work (Table 5.1) has been conducted at the Condor Project, Stream, soil, and rock surveys have been carried out, identifying well-defined gold-copper soil anomalies at Santa Barbara and a copper-molybdenum soil anomaly at El Hito. Other areas also show anomalous gold and copper values.

As of 2018, previous operators completed 703 trenches totalling 14,650 m, mainly around the Condor breccia pipes.

From 2017 to 2018, Soil surveys were conducted at Santa Barbara, Prometedor, Camp, Wanwintza Bajo, and Wanwintza Alto by Luminex. Detailed results are available in the 2018 Technical Report.

In 2019, Luminex conducted two soil sampling grids in the Camp area, collecting 110 samples.

 

Since 2018, Luminex has continued property-wide sampling activities, advancing Prometedor and Nayumbi to drill-ready stages.

Table 5.1:     Geochemical Surveys of Condor Project

 

Time Period Activity Details
1980s-Present Geochemical Surveys Stream, soil, and rock surveys; gold-copper soil
    anomalies at Santa Barbara; copper-molybdenum soil anomaly at El Hito
Pre-2017 Trenching and Channel Sampling 703 trenches totaling 14,650 m, mainly around the
    Condor breccia pipes
2017-2018 Soil Surveys by Luminex Conducted at Santa Barbara, Prometedor, Camp,
    Wanwintza Bajo, and Wanwintza Alto
2019 Soil Sampling by Luminex Two soil sampling grids in the Camp area, totaling 110 samples
Since 2018 Ongoing Sampling by Luminex Property-wide sampling activities; Prometedor and
    Nayumbi brought to drill-ready stage

Sources: SRK, Summary from 2021 Condor Project PEA

 

Geophysical surveys (Table 5.2) have played a crucial role in identifying targets within the Condor Project, Magnetic Surveys did not yield significant useful data before 2006.

CSAMT Surveys were Conducted by previous owners, these surveys identified areas of low resistivity correlating with the sulphide-rich Chinapintza veins before 2006.

In 2006, A Pole-Dipole IP Survey with 100 m spacing on northwest-trending lines covered the Condor breccias. High-chargeability values reflecting sulphide mineralization were found only at the Enma breccia deposit. High-chargeability zones near other breccia zones remain untested.

In 2019, A helicopter-supported ZTEM survey by Geotech Ltd. covered 780-line kilometres in the Condor North area. This survey revealed several conductive zones correlating with precious-metal showings, including Prometedor and the Soledad Baja target, aligning with the Camp discovery.

 

  
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Table 5.2:     Geophysical Surveys of Condor Project

 

Time Period Survey Type Details
pre-2006 Magnetic Surveys Did not yield significant useful data
pre-2006 CSAMT Surveys Identified areas of low resistivity correlating with sulphide-rich Chinapintza veins
2006 Pole-Dipole IP Survey Covered the Condor breccias; high-chargeability values at Enma breccia deposit
2019 ZTEM Survey Helicopter-supported; covered 780-line km in the Condor North area; revealed several conductive zones correlating with precious-metal showings

Sources: SRK, Summary from 2021 Condor Project PEA

 

5.3  Production

Despite extensive exploration efforts, the Condor Project has not yet achieved commercial mineral production. However, artisanal mining has been a significant activity in the area since the 1980s. Legal and illegal artisanal miners have been extracting gold from the Chinapintza veins, and this activity continues to the present day. Unfortunately, there are no official production records available for this artisanal mining, highlighting the need for more formal and regulated mining operations to fully realize the project's potential.

 

5.4  Previous Mineral Resource Estimates

The Condor Project has seen several updates to its Mineral Resource estimates over the years, reflecting the evolving understanding of the area's geology and mineral potential:

From 1993 to 2000, TVX Gold, Inc. and Chalupas Mining conducted extensive exploration, including drilling 195 holes totaling 42,101.5 m. This period's exploration provided initial insights into the mineralization but did not culminate in a formal resource estimate.

Between 2002 and 2008, Goldmarca/Ecometals continued drilling, completing 154 holes totaling 33,322.9 m across various gold deposits. Their work helped delineate significant mineralized zones, although specific resource estimates from this period are not detailed in the provided history.

Ecuador Gold and Copper Corp. (EGX) conducted diamond drilling from 2012 to 2016, completing 37 holes totaling 22,051.7 m at several deposits. Their efforts contributed to a better understanding of the mineralization, leading to more refined resource estimates.

In 2015, A Preliminary Economic Assessment (PEA) was completed for the Santa Barbara Project (Short et al., 2015). This PEA included updated Mineral Resource estimates, providing a more comprehensive understanding of the project's economic potential.

Lumina Gold Corp released an updated Mineral Resource estimate in May 2018, covering four deposits: Santa Barbara, Los Cuyes, Soledad, and Enma. This estimate was further detailed in a technical report released on July 10, 2018. This update significantly advanced the project's resource understanding and laid the groundwork for further exploration and development by Lumina and later Luminex.

 

  
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The mineral resources for Santa Barbara, Los Cuyes, Soledad, Enma deposits were restated in a subsequent PEA Technical Report released on July 28, 2021, using updated metal prices and other parameters. Additionally, an underground Mineral Resources estimate for Camp was also released in the PEA.

 

  
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  6   Geological Setting and Mineralization

 

The contents of this section are mainly sourced from the Condor Project, Ecuador NI 43-101 Technical Report, Condor Project NI 43-101 Technical Report on Preliminary Economic Assessment Report in 2021 (Elfin et al, (2021)).

 

The Condor Project is located in the Cordillera del Condor in the Zamora copper-gold metallogenic belt. The Project area comprises epithermal gold-silver, porphyry copper-gold ±molybdenum, skarn gold-copper, and numerous alluvial gold deposits (Morrison, 2007; Williams, 2008).

 

  6.1   Regional Geology

 

The Condor Project is located in the Cordillera del Condor in the Zamora copper-gold metallogenic belt. The Project area comprises epithermal gold-silver, porphyry copper-gold ±molybdenum, and numerous alluvial gold deposits (Morrison, 2007; Williams, 2008). The Fruta del Norte and Mirador Mines, and the San Carlos-Panantza and Warintza deposits are also located within the Zamora copper-gold metallogenic belt (Drobe et al., 2013).

 

The geologic make-up of the Cordillera del Condor is dominated by the Middle to Late Jurassic Zamora batholith, dated between 153–169 Ma (Litherland et al., 1992; Drobe et al., 2013). Calc-alkaline, I-type batholith lithologies form components of a continent-scale remnant magmatic arc emplaced along an Andean-type continental margin. Batholith magmas intrude supra-crustal sequences of Palaeozoic to Mesozoic sedimentary and arc-related igneous and volcanic rocks. The Zamora batholith is exposed along a 200 km north-northeast trend, is over 100 km wide, and is dissected by predominantly north- south faults forming part of a laterally extensive fold and thrust belt.

 

The regional geology and key mineral deposits are shown in Figure 6.1.

 

  
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Figure 6.1:      Regional Geological Map of Condor Project

 

 

Source: Modified from 2021 Condor Project PEA

 

  
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Batholith magmas are typically composed of equigranular, medium-grained monzonites and granodiorites along with younger sub-volcanic porphyritic (plagioclase-hornblende ±quartz) intrusions, the latter spanning rare gabbroic to more commonplace andesitic to rhyolitic compositions. Porphyritic intrusions form every 15 km to 20 km along the north-northeast axis of the Zamora batholith and are commonly associated with copper and gold mineralization.

 

The Zamora batholith intrudes Late Triassic to Early Jurassic Santiago Formation sedimentary and volcanic rocks, locally incorporating them as faulted blocks or roof pendants. Late Jurassic Chapiza Formation sedimentary rocks and Misahuallí volcanic rocks unconformably overlie the batholith. Early Cretaceous quartz arenites of the Hollín Formation as well as sandstones, mudstones and limestones of the Napo Formation further cover portions of the eroded Jurassic volcano-sedimentary sequence and the batholith (Hedenquist, 2007; Drobe et al., 2013). This sequence is locally overlain by rhyolitic to dacitic volcanoclastic rocks of the Early Cretaceous Chinapintza Formation. Late Cretaceous felsic to intermediate stocks and dykes are aligned with regional fault structures.

 

North-south-trending detachment faults form the principal structural grain, precursors of which controlled the emplacement of the batholith and its subsequent uplift. A series of younger northeast-, northwest- and east-northeast-striking cross structures control the emplacement of younger intrusions.

 

  6.2   Property Geology

 

The Condor Project encompasses a diverse and geologically complex area with at least three distinctive mineral sub-districts, each characterized by unique mineralization styles and deposits. Only the Condor North area is discussed in this report. The sub-districts highlight the geological diversity and significant exploration potential within the Condor Project, underscoring the presence of various mineral deposits and targets across the concession. A concession-scale geology map of the Condor Project is shown in Figure 6.2.

 

  
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Figure 6.2:      Property Geology Map of Condor Project

 

Source: Modified from 2021 Condor Project PEA

 

  
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Condor North Area:

 

The Condor Project's geology is both diverse and complex, particularly in the Condor North area. This region is characterized by distinctive low- to intermediate-sulphidation epithermal vein swarms located in the northern part. These vein swarms form a series of north-northwest-striking, narrow, high-grade gold and electrum-bearing manganoan carbonate veins, often accompanied by base metals and hosted in dacite porphyry.

 

Notably, the Chinapintza vein district extends along strike for 1.5 km over a zone 0.6 km wide, traversing the former Jerusalem concession and continuing into Peru. In the 1990s, TVX conducted more than 45,000 m of drilling followed by underground trial mine development to explore these veins. Although sufficient data for an accurate Mineral Resource evaluation is lacking, artisanal mining continues to exploit these veins.

 

Immediately south of the Chinapintza vein district lies the Condor breccia, dyke, and dome complex. This complex is hosted by Early Cretaceous rhyodacite to dacite intrusions and volcaniclastics of the Chinapintza Formation, encircled by the Zamora Batholith. Within this area, several diatreme breccias, dykes, plugs, and sub-volcanic domes are associated with these intrusions. Rhyolite dykes, in particular, play a crucial role in localizing vein mineralization. The Condor breccia, dyke, and dome complex is further divided into four main zones: Los Cuyes, Soledad, Enma, and Camp (Figure 6.3). Gold-silver mineralization in these zones is linked with sphalerite-pyrite/marcasite veins, which typically occur within breccias, along the contacts of rhyolite dykes, and as replacements and disseminations.

 

These veins are often disrupted by post-mineral extensional faults.

 

Figure 6.3:      Diagrammatic Cross-section of Los Cuyes, Soledad, and Camp

 

 

Source: Hathaway (undated)

 

  
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  6.3   Mineralization

 

The Condor breccia, dyke and dome complex hosts the Camp, Los Cuyes, Soledad, Enma and the Chinapintza vein deposits and the un-drilled Prometedor prospect (Figure 6.4, Prometedor lies southeast of the area shown in the figure).

 

Camp

 

The Camp deposit features gold and silver mineralization linked to a swarm of northwest-striking rhyolite-dacite dykes, likely originating from a larger buried rhyolite intrusion. These dykes are concentrated at the contact between a volcanic/intrusive complex and a major granodiorite intrusion. The mineralized zone, dipping steeply at 85° to the northeast, extends over 500 m along strike and is 80 to 130 m wide.

 

Gold occurs within veins containing pyrite, marcasite, iron-rich sphalerite (marmatite), galena, ± chalcopyrite, pyrrhotite, quartz, and rhodochrosite gangue. Host rocks include altered granodiorites, breccias, flow-banded rhyolite, and phreatomagmatic breccia. The area is capped by 30 to 80 m of trachyte to rhyolitic welded tuff, with the Camp ridge bounded by the Camp Fault and Piedras Blancas Fault.

 

Anomalous surface copper mineralization and stockwork porphyry clasts with molybdenite in the nearby Los Cuyes diatreme suggest a deeper common mineralized porphyry underlying the Condor breccia, dyke, and dome complex.

 

Los Cuyes

 

Los Cuyes is hosted within an oval-shaped diatreme measuring 450 m northeast-southwest, 300 m northwest-southeast, and extending to at least 350 m in depth. This diatreme, resembling an inverted cone plunging approximately 50° to the southeast, consists of an outer shell of polymictic phreatomagmatic breccia and an internal fill of well-sorted rhyolitic lapilli tuffs, breccias, and volcanic sandstones. Amphibolite and quartz arenite fragments occur around its periphery, with dacite and rhyolite ring dykes intruding the steep margins.

 

Alteration within the diatreme is primarily sericite-illite, with localized carbonate and intense phyllic alteration at the margins, indicating focused hydrothermal fluid flow. Gold and silver mineralization occurs in veins containing pyrite, sphalerite, galena, chalcopyrite, and pyrrhotite. The entire diatreme exhibits a low background level of gold, primarily in disseminated pyrite and sphalerite. The highest gold values are found in veins of massive sphalerite, pyrite, and marcasite, with minor quartz, galena, and rhodochrosite, similar to the nearby Chinapintza veins.

 

Lithological contacts, such as dykes cutting through the diatreme and its outer breccia shell, favoured vein development. The mineralization and alteration at Los Cuyes post-date all local rock types, including blocks of the Hollín Formation, indicating that the mineralization is post-Early Cretaceous.

 

  
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Soledad

 

The Soledad Zone features a 700-meter diameter oval-shaped rhyolite intrusion within the Zamora Batholith, surrounded by discontinuous pyritic breccias. It includes individual mineralized zones named Soledad, San Jose, Bonanza, and Guayas. Epithermal gold-silver mineralization at Soledad resembles that of the Camp deposit, with patchy matrix replacement by sulphides, grain-scale replacement of rhyolite feldspars by sphalerite and pyrite, and irregular sphalerite veinlets. Unique to Soledad are the pyritic hydrothermal matrix breccias at the upper margins of the intrusion at San Jose and Guayas.

 

The overall mineralization at Soledad is described as a north-south elongated wine glass-shaped body, tapering between 200 to 300 m below the surface and extending approximately 110 m northwest by 50 m northeast. Sphalerite transitions to pyrite as the dominant sulfide at around 100 m below the surface, leading to diminished gold and silver grades similar to Los Cuyes.

 

Enma

 

Gold and silver mineralization at Enma is hosted in a west-northwest-trending rhyolitic breccia that occurs at the contact between andesite lapilli tuffs and the Zamora batholith. The deposit has dimensions of 280 m east-northeast, is approximately 20-75 m wide, and has a vertical extent of 350 m. Alteration mineralogy is primarily chlorite with minor quartz-sericite ± alunite-kaolinite. Gold is associated with pyrite-sphalerite-quartz and locally rhodochrosite veins. At depths greater than 200 m, gold-poor, pyrite-pyrrhotite ± chalcopyrite veins are more dominant.

 

  
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Figure 6.4:      Condor Volcanogenic Breccia and Dome Complex

 

 

Sources: 2021 Condor Project PEA

 

  
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  7   Deposit Types

 

In the Condor North area, gold and silver mineralization within the Condor breccia, dyke and dome complex, and the adjacent Chinapintza veins, as well as at the newly identified Nayumbi prospect located in the Condor South area, is consistent with low to intermediate sulphidation epithermal mineralization (Hedenquist et al., 1996). Notable examples of epithermal gold deposits include Fruta del Norte (Ecuador), McLaughlin (California), Hishikari (Japan), Waihi (New Zealand) and parts of Porgera (Papua New Guinea). The Condor Project is reported to display the characteristics of low to intermediate sulphidation epithermal deposits (as described by Sillitoe, 1993; White and Hedenquist, 1995; Leary et al., 2016).

 

The Camp, Los Cuyes, Soledad, and Enma prospects are consistent with low to intermediate sulphidation epithermal mineralization. Characteristics of such deposits are:

 

  Occur at convergent plate settings, typically in calc-alkaline volcanic arcs.

 

Form at shallow depths (<2 km) from near-neutral pH, sulphur-poor hydrothermal fluids, often of meteoric origin, with metals derived from underlying porphyry intrusions.

 

Structural permeability created by hydrothermal fluid over-pressuring allows for mineralized fluids to permeate, with gold precipitated by boiling.

 

Sub-types include sulphide-poor deposits with rhyolites, sulphide-rich deposits with andesites/rhyodacites, and sulphide-poor deposits with alkali rocks.

 

Hydrothermal alteration is zoned and subtle, characterized by sericite, illite, smectite, and carbonate.

 

Features quartz, quartz-carbonate, and carbonate veins with various textures.

 

Sulphide content varies (1-20%), typically <5%, with pyrite, sphalerite, galena, and low copper (chalcopyrite).

 

High gold, silver, arsenic, antimony, mercury, zinc, lead, selenium, and low copper, tellurium.

 

  
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  8   Exploration

 

In 2024, Silvercorp took ownership of the Condor Project through the acquisition of Adventus Mining Corporation. As part of the 2024 SVM relogging program (Figure 8.1), the geology team completed the evaluation of 100 DDH, totalling 46,942 m, including 38 DDH from Camp Zone and 62 DDH from Los Cuyes. The program focused on understanding and confirming the project characteristics including lithology types, structural setup, and mineralization style.

 

Figure 8.1:      2024 SVM Relogging Program

 

 

Sources: SVM, 2024

 

  
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  9   Drilling

 

Since 1994, the Condor Project has undergone extensive drilling by various operators. The drilling campaigns of Condor Project from 1994 to 2021, totalling 538 holes with 157,312 m, focused primarily on the Condor North Area and Condor Central Area.

 

Drilling campaigns from 2022 to Sep 2023, totalled 21,838 m, mainly distributed in Camp Condor, Los Cuyes, 4 holes in El Hito, and 7 holes in Prometedor. Figure 9.1 and Figure 9.2 display the locations of the drillholes in North and Central Area of Condor Project respectively.

 

Figure 9.1:      Condor North Area Drilling Location Map

 

 

  
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Figure 9.2:      Condor Central Area Drilling Location Map

 

 

  9.1   Historical Drilling (Pre-2019)

 

Condor Project has experienced extensive drilling by various operators during 1994 to 2018. The drilling programs summary is presented in Table 9.1.

 

TVX Gold, Inc. initiated drilling between 1994 and 2000, testing the Chinapintza veins (75 holes; 20,489 m), Condor breccias (97 holes; 16,128 m), Santa Barbara (19 holes; 4,296 m), and El Hito (4 holes; 1,188 m). It used worker-portable drills that produced HQ- or NQ-size core. Downhole surveys were completed, but the specific method is unknown, except at Santa Barbara where a Pajari instrument was used. Most of the collars are marked with a concrete pad.

 

From 2004 to 2007, Goldmarca drilled the Condor breccia pipes (124 holes; 21,612 m), followed by Ecometals in 2008, focusing on the Condor breccias (29 holes; 11,111 m) and Santa Barbara (1 hole; 600 m). All holes were drilled using HQ-size core, reducing to NQ as needed. Holes were located using a handheld Garmin GPS instrument. Downhole surveys were completed for 33 of the drill holes using a FLEXIT instrument which takes readings at 3 m or 6 m intervals. Core recoveries for holes drilled by Goldmarca and Ecometals were generally >90% (Hughes, 2008).

 

Between 2012 and 2014, Ecuador Gold and Copper Corp. (EGX) conducted further drilling on the Chinapintza veins (1 hole; 757 m), Los Cuyes and Soledad breccias (4 holes; 2,574 m), Santa Barbara (27 holes; 15,223 m), and El Hito (5 holes; 3,498 m). Two contractors were used for this drilling: Roman Drilling Corp. S.A. and Hubbard Perforaciones Cia., Ltda. (Hubbard); both are based in Cuenca, Ecuador. All holes were drilled using HTW-size (HQ) core, reducing to NTW (NQ) as needed. The Hubbard drills were worker-portable and similar to Hydracore 4000 rigs. Holes were located using

 

  
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a handheld Garmin GPS. When a hole was completed, the hole location was marked with a cement monument displaying the hole number, azimuth and dip. A Reflex EZ-SHOT™ was used to provide downhole orientation data at 50 m intervals. Core recoveries during this period of drilling average approximately 93%.

 

From 2017 to 2018, Lumina used Hubbard Perforación Cia. Ltda.to complete nine HTW (HQ) drill holes (1,907 m) in the Santa Barbara area. Three targets peripheral to the main Santa Barbara mineralization were tested: Santa Barbara northwest, northeast, and southeast. A Hydracore 2000 drill was used, and the drill was moved using a small tractor. Drill holes were located using a handheld Garmin GPS. A Reflex EZ-SHOT™ was used to provide downhole orientation data at 50 m intervals. Core recoveries in holes drilled by Lumina average just over 91%.

 

Table 9.1:      Drilling Programs of Condor Project (Pre-2019)

 

Year   Company/Entity   Core   Total Metres   Focus Area
        Boreholes   Drilled    
        75   20,489   Chinapintza veins
1994-2000   TVX Gold, Inc.   97   16,128   Condor breccias
        19   4,296   Santa Barbara
        4   1,188   El Hito
2004-2007   Goldmarca   124   21,612   Condor breccia pipes
2008   Ecometals   29   11,111   Condor breccias
        1   600   Santa Barbara
        1   757   Chinapintza veins
2012-2013   Ecuador Gold and   4   2,574   Los Cuyes and Soledad breccias
    Copper Corp.   27   15,223   Santa Barbara
        5   3,498   El Hito
2017-2018   Lumina Gold Corp   9   1,907   Geochemical and IP anomalies around Santa Barbara

Sources: SRK, Summary from 2021 Condor Project PEA

 

  

  9.2   Luminex Drilling (2019 – 2021)

 

From 2019 to 2020, Luminex Resources Corp. has completed 46 holes (23,683 m) focusing on geochemical anomalies and delineation drilling at Camp and Soledad deposits, and additional holes to recover metallurgical material from Cuyes and Enma. Drilling was completed by two contractors, Kluane Drilling Ecuador S.A. and Rumi Drilling Services Ecuador (RDSEC) S.A. Each used a Hydra core 2000. All holes were collared with HQ-size (or HTW) core and reduced to NQ (or NTW) when needed. Access trails to drill pads were constructed by hand as well as using a small excavator. Rig movements were facilitated by a Bobcat and, where possible, a larger Morooka all-terrain vehicle was used.

 

  
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All holes were drilled as oriented core via Reflex ACT II or III equipment with downhole surveys completed by either DeviShot TM or Reflex EZ-TRACTM XTF tools. Data from downhole surveys were collected at 30 m to 50 m intervals. Collars were initially spotted via handheld Garmin GPS and later surveyed using a total-station theodolite (Sokkia model 105) to a 5 mm accuracy.

 

Core recoveries average 98% for drilling conducted by Luminex.

 

In 2021, Luminex completed one short hole (100 m) for metallurgical samples at the Enma deposit. Drilling was completed by Rumi Drilling and under the same protocols as prevailed during the 2020 program.

 

  9.3   Luminex Drilling (2022 – 2023)

 

The QP was provided the drillhole database CN_DH_Export_Database_8Sept2023.xlsx) as of September 8, 2023, totalling 55 holes with 21,838 m. These new holes were not included for Mineral Resource estimates as of December 31, 2021. The drilling hole summary is presented in Table 9.2.

 

Table 9.2:      Drilling hole Summary of Condor Project (2022-2023)

 

Year Area Core Boreholes Total Metres Drilled
  Camp Condor 13 4,695
2022 El Hito 4 2,418
  Los Cuyes 15 5,660
Sub Total   32 12,773
  Los Cuyes 16 7,990
2023 Prometedor 7 1,075
Sub Total   23 9,064
Grand Total   55 21,838

Sources: SRK, Summary from the drillhole database CN_DH_Export_Database_8Sept2023.xlsx

 

  9.4   Luminex Drilling Procedures

 

The exploration drilling procedure involves meticulous planning and execution to ensure accuracy and minimal environmental impact. Initially, diamond drilling using HQ and NQ diameter rods is the primary method, continuously monitored by Exploration Managers or their designees, with reverse-circulation (RC) drilling used occasionally as outlined in Lumina’s "Guidelines for Drilling and Trenching Contractors." Drilling contractors are responsible for mobilizing all necessary equipment to the site, controlling water usage and drilling mud, managing borehole progress, transporting core boxes, providing required pipes and consumables, and preventing spills of fuel and lubricants. They must also collect and transport all garbage or waste generated during the drilling process.

 

Contractors must construct drilling pads at specified borehole locations, taking care to separate and preserve topsoil for later reclamation. Geologists mark the positions in the field and assist drillers with

 

  
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marking azimuth and dip of the planned hole. Surveyors accurately measure collar locations with elevation using Total Station or GPS equipment with centimetre-scale accuracy. Drillers complete hole deviation surveys during drilling at systematic intervals using down-hole survey equipment.

 

Post-drilling, contractors are responsible for reclaiming drill pads by re-grading them to original contours to blend with the surrounding ground surface. The disturbed sites are covered with reserved topsoil and revegetated with native species. Drilling mud pits are backfilled, covered with reserved topsoil, and revegetated; all geosynthetic pit liner material and any other debris from drilling operations must be properly disposed of. Any residual water in the mud pits is tested for pH and adjusted with lime to pH 5-7 before release into the environment.

 

Drill collars are reclaimed by pouring an approximately 0.5 m² concrete monument around the casing. The monument is inscribed with the hole number and date of the borehole. The casing stub is cut off about 0.5 m to 0.75 m above the monument surface, fitted with a PVC slip cap, and marked with reflective tape. These detailed procedures ensure precise data collection and uphold environmental stewardship throughout the exploration process.

 

  9.5   Recommendations

 

In the authors’ opinion, the current core handling, logging, sampling and core storage protocols on the Condor Project are consistent with common industry standards, and the authors are not aware of any drilling, sampling or recovery factors that could materially impact the accuracy and reliability of these results.

 

All database records should be assigned a consistent year and area.

 

The authors of this report recommend that Silvercorp take additional bulk density measurements on samples for Los Cuyes, Soledad, and Enma to improve the confidence in the estimation of the bulk density in these deposits.

 

  
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  10   Sample Preparation, Analyses, and Security

 

Condor resource drilling sampling from 1994 to 1996 were sent to Bondar Clegg (now ALS Chemex) or SGS in Ecuador for preparation; analysis by SGS laboratories in Canada. In 1999 and 2020, drill samples from Santa Barbara analysed by ALS Chemex. Bondar Clegg and SGS were recognized for their high standards, holding ISO/IEC 17025 and ISO 9000 accreditations respectively.

 

From 2004 to 2008, The samples of Condor project were sent to ALS Chemex in Quito or Acme’s preparation lab in Cuenca. Acme Labs in Vancouver, Canada, conducted the analysis, including fire assay with ICP finish for Au and Ag, and AA for Zn, Cu, and Pb. Acme Labs, known for its reliability, held ISO 9001:2000 accreditation at the time.

 

Between 2012 and 2014, The samples of Condor project were transported to Acme Lab’s preparation facility in Cuenca. Analysis was performed by Acme Lab in Santiago, Chile, using fire assay techniques for gold and ICP-ES for silver and copper. Acme Labs maintained ISO 9001:2000 accreditation during this period.

 

During Lumina Gold Corp.’s 2017-2018 drilling program of Condor Project, samples were sent to MSALABS in Vancouver, Canada, for analysis. MSALABS conducted gold assays using fire assay techniques and ICP-MS analysis with four-acid digestion. The laboratory-maintained ISO/IEC 17025:2005 accreditation, ensuring high-quality results.

 

From 2019 to 2021, Luminex Resources Corp. continued with rigorous sampling procedures similar to those of Lumina. Samples were sent to ALS Laboratories in Quito for preparation. Analysis was performed by ALS Laboratories in Lima, Peru, using fire assay and ICP-MS analysis. ALS Laboratories held ISO/IEC 17025:2017 accreditation, providing assurance of the reliability of their results.

 

  10.1   Sampling

 

Throughout the Condor Project, rigorous sampling procedures were consistently applied to ensure the integrity and reliability of collected data.

 

From 1994 to 2000, drill core was cut in half using a diamond saw, with one half sent for analysis and the other half stored securely in core boxes at the project site. TVX Gold Inc. conducted continuous sampling at 1.0-m intervals for the first holes drilled on the Chinapintza veins. Subsequent holes focused on potentially mineralized core with variable lengths. For other areas such as Enma, Los Cuyes, San Jose, and Soledad Breccias, entire holes were sampled with intervals ranging from 1.0 to

2.5 m.

 

Between 2004 and 2007, Goldmarca, later known as Ecometals, continued the practice of sampling entire drill holes at 2.0-m intervals. The core was cut in half, with one half placed in marked sample bags and sealed, while the other half was returned to the core box and stored in a warehouse.

 

  
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From 2012 to 2014, Ecuador Gold and Copper Corp. maintained a similar approach, Core was cleaned and photographed in two box sets at the core-logging facility. Core intervals were marked at intervals of 1.0, 2.0, or 2.5 m, and cut in half using a diamond saw. Half of the core was placed in labelled plastic sample bags secured with tamper-proof zip ties, with the remaining half stored securely.

 

In the period from 2017 to 2018, Lumina Gold Corp. followed suit, sampling core at 2-m intervals and placing half of the core in plastic bags with bar-coded sample tickets, secured with tamper-proof zip ties. The other half was stored on-site. Core was washed, and wet and dry photos were taken of the whole core at the Luminex exploration camp.

 

Since 2019, Luminex Resources Corp. has continued this rigorous sampling procedure, cutting core at intervals of 1 to 2 m, with half the core placed in plastic bags with bar-coded sample tickets, secured with tamper-proof zip ties, and the remaining half stored on-site at the Luminex exploration camp. Some older core from previous operators is stored near the Soledad deposit. Core was washed and photographed (Figure 10.1) in dry and wet conditions under consistent artificial light at the Luminex exploration camp.

 

Figure 10.1: Drill Core Photograph and Logging Areas of Condor Project

 

Sources: SRK site visit, 2024

 

  10.2   Sample Preparation and Analysis

 

The preparation and analysis of samples from the Condor Project were managed by various reputable laboratories to ensure high-quality results.

 

During the period from 1994 to 2000, TVX Gold Inc. sent samples to Bondar Clegg (now ALS Chemex) or SGS in Ecuador for preparation, with analysis conducted by SGS laboratories in Canada using fire assay techniques. From 1999 onwards, ALS Chemex analyzed drill samples from Santa Barbara.

 

Between 2004 and 2007, Goldmarca and later Ecometals prepared samples at ALS Chemex in Quito or Acme’s preparation lab in Cuenca. Analysis was conducted by Acme Labs in Vancouver, using fire assay with ICP finish for gold and silver, and AA for zinc, copper, and lead.

 

  
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From 2012 to 2014, Ecuador Gold and Copper Corp. prepared samples at Acme Lab’s facility in Cuenca and sent them to Acme Lab in Santiago, Chile, for analysis. They used fire assay for gold and ICP-ES for silver and copper.

 

Between 2017 and 2018, Lumina Gold Corp. used MSALABS in Vancouver, Canada, for sample analysis. They conducted gold assays using fire assay techniques on a 30 g charge and 34-element ICP-MS analysis with four-acid digestion.

 

Since 2019, Luminex Resources Corp. has prepared samples at ALS Laboratories in Quito, with analysis conducted at ALS Laboratories in Lima, Peru. They used a 50 g charge for gold by fire assay and 34-element ICP-MS analysis.

 

 

  10.3   Sample Shipment and Security

 

Drill core is stored in a clean and well-maintained core shack in the Luminex exploration camp. To avoid swelling and caking, the pulp samples are stored in a sealed plastic bag in the refrigerator (Figure 10.2).

 

Stringent sample shipment and security measures were consistently implemented to maintain the integrity of the samples throughout the project.

 

From 1994 to 2000, TVX Gold Inc. ensured samples were securely shipped to SGS in Ecuador for preparation and then to Canada for analysis and the other half stored securely. Samples for ALS Chemex were sent directly to their lab.

 

Between 2004 and 2007, Goldmarca and Ecometals transported samples by truck to Loja and then shipped them to ALS Chemex in Quito or Acme in Cuenca. Any broken sample bags were retaken and reshipped to ensure integrity.

 

From 2012 to 2014, Ecuador Gold and Copper Corp. used their employees or bonded couriers to transport samples to Acme Lab’s preparation facility in Cuenca, ensuring secure handling.

 

In the period from 2017 to 2018, Lumina Gold Corp. shipped samples to MSALABS preparation lab in Cuenca. Secure tamper-proof tags were checked upon arrival to ensure no irregularities.

 

Subsequent to 2019, Luminex Resources Corp. had samples collected from their exploration camp by ALS Laboratories representatives and delivered to their preparation lab in Quito. Secure handling and tamper-proof tags ensured the integrity of the samples throughout the process.

 

  
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Figure 10.2: Core Tray and Sample Storage of Condor Project

 

Sources: SRK Site visit, 2024

 

 

  10.4   Bulk Density

 

Specific gravity (SG) data are only available for the Los Cuyes and Camp areas. SG measurements are determined using the water immersion method (weight in air versus weight in water). The SG data was collected by the operators in 1994/95 (TVX), 2004-2007 (Goldmarca / Ecometals), 2012 (EGX) and 2019-2023 (Luminex).

 

Typically, SG measurements were conducted on samples spaced at 10 m intervals down each drill hole.

 

The volume and distribution of SG data are considered sufficient to support calculation of average densities per rock type in the block models at Los Cuyes and Camp.

 

 

  10.5   QAQC

 

There is no QAQC data were available for the TVX drilling programme.

 

From 2004 to August 2007, The Certified Reference Materials (CRMs or standards Standards), Blanks and quarter core duplicate samples were used on the Project. Some standards used mine waste material. However, due to high variability in analysis, these were no longer used.

 

The QAQC procedure from July 2007 to 2011 involved inserting a blank every 6 samples, a standard after 7 samples, a duplicate after 6 samples, followed by another blank. A random check indicated that this methodology was not strictly adhered to in terms of the number of blanks and standards. From July 2007, OREAS standards and blanks were used, mine waste material was no longer used.

 

  
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During the EGX drill programs from 2012 to 2014, Three types of control samples were inserted after every 20 samples as part of the QAQC procedure. These include certified reference standards, from CDN Resource Laboratories Ltd. (CDN) or OREAS, a blank (OREAS), and a quarter core duplicate sample.

 

Quality control failures for programs from 2012–2015 were addressed with programs of remedial assay analysis.

 

During the 2017–2018 drill program, QAQC samples are inserted after every six core samples. These include three certified standards (high, medium and low gold grades), a blank, and a coarse duplicate.

 

During the 2019–2021 drill program, QAQC samples are inserted with the insert rate about 2% - 4% for each type, including the certified standards, blank, coarse duplicate and fine duplicates.

 

From 2022 to 2023, drill program was conducted in Camp and Los Cuyes, QAQC samples are inserted with the insert rate about 1% - 4% for each type, including the certified standards, blank, coarse duplicate and fine duplicates.

 

A summary of QAQC samples is provided in Table 10.1.

 

Table 10.1:      Condor QAQC Samples During the Period 1994 to 2023

 

Period Drilling Number Diamond
Drilling (m)
Samples
Number
QC Samples
Type1
QC Samples
Number
QC Samples
%
1994 76 21,365 13,042      
1995 110 19,264 9,820      
1996 21 5,327 412      
1999 10 2,523 1,180      
2000 13 2,961 1,412      
2004 5 179 67

BLK

STD

6

4

8.96

5.97

        BLK 85 4.57
2005 55 4,178 1,859 COARSE DUP 30 1.61
        STD 116 6.24
        BLK 267 5.17
2006 38 10,731 5,169 COARSE DUP 183 3.54
        STD 266 5.15
        BLK 432 4.98
2007 55 17,635 8,673 COARSE DUP 438 5.05
        STD 445 5.13
        BLK 16 5.39
2008 1 600 297 FIELD DUP 13 4.38
        STD 16 5.39
        BLK 170 5.89
2012 9 5,599 2,886 FIELD DUP 170 5.89
        STD 170 5.89

 

  
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Period Drilling Number Diamond
Drilling (m)
Samples
Number
QC Samples
Type1
QC Samples
Number
QC Samples
%
        BLK 466 5.86
2013 28 16,452 7,946

COARSE DUP

FIELD DUP

2
465
0.03
5.85
        STD 466 5.86
        BLK 45 5.80
2017 7 1,560 776 COARSE DUP 46 5.93
        STD 45 5.80
        BLK 10 5.75
2018 2 347 174 COARSE DUP 10 5.75
        STD 10 5.75
        COARSE BLK 309 4.16
2019 26 12,900 7,435 COARSE DUP
FINE DUP
207
204
2.78
2.74
        STD 217 2.92
        COARSE BLK 188 2.87
        COARSE DUP 182 2.78
2020 20 11,124 6,543 FINE BLK 81 1.24
        FINE DUP 184 2.81
        STD 184 2.81
        BLK 2 0.11
        COARSE DUP 48 2.75
2021 9 3,366 1,748 FINE BLK 66 3.78
        FINE DUP 49 2.80
        STD 47 2.69
        COARSE DUP 164 2.88
2022 28 10,355 6,401 FINE BLK
FINE DUP
224
152
3.93
2.67
        STD 160 2.81
        COARSE BLK 41 0.88
        COARSE DUP 120 2.57
2023 16 7,990 5,249 FINE BLK 154 3.30
        FINE DUP 116 2.49
        STD 150 3.21

 

Sources: Summary by SRK based on CN_DH_Export_Database_8Sept2023.xlsx from Adventus

 

Note:

 

1.QC samples summary for includes data from Camp, Condor, Los Cuyes, Chinapintza, San Jose I, Guaya, Soledad, Enma, Conguime, El Hito, Santa Barbara, Prometedor, Nayumbi, and Soledad Baja

 

  
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10.6  Recommendations

 

The author of this report considers that quality control measures adopted for assaying of the Condor resource drilling have established that the assaying is representative and free of any biases or other factors that may materially impact the reliability of the analytical results. The author considers that the sample preparation, security and analytical procedures adopted for Condor drilling provide an adequate basis for the current Mineral Resource estimates.

 

The QP makes the following recommendations to improve and streamline procedures:

 

Only use one standard coarse blank material that should undergo sample preparation along with the typical sample stream, to monitor for any between sample contamination during sample preparation.

 

In addition to the review of the performance of QC data on a batch-by-batch basis, analysis of the data over a longer term is recommended to assess for bias between the different laboratories, and any changes in laboratory performance over time.

 

  
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11  Data Verification

 

11.1  Site Visit

 

The SRK team conducted the site inspections to the Condor project from June 19-20, 2024. They undertook the following verification steps:

 

Site inspection of the project area.

 

Meeting with Company representatives.

 

Discussions with geologists regarding sample collection, sample preparation, sample storage, QAQC, geological interpretation.

 

Review of the outcrop, mineralization, faults (Figure 11.1),

 

Inspection of drillhole sealing mark (Figure 11.2),

 

Visually checking stratigraphy against interpreted drilling sections.

 

Visit the drill core store and core catalog room of Condor Project, to understand the company’s core storage protocols and procedures.

 

Figure 11.1:     Rock Outcrops at the Condor Project

 

 

Source: SRK Site visit, 2024

 

  
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Figure 11.2: Condor Project Drillhole Sealing Mark

 

 

 

Source: SRK Site visit, 2024

 

 

11.2  Historical Data Validation

 

During different exploration stages, the Condor project submitted technical reports at different times, describing the data verification by various Qualified Persons (QPs).

 

The 2021 NI 43-101 report made a summary of QAQC of Condor Project as below:

 

There is no QAQC data available for the TVX drilling programme.

 

A comprehensive review of QAQC from drilling and trench sampling programs prior to 2014 is provided in Maynard and Jones (2011 and 2014) and Hastings (2013). The reviews indicated that no QAQC data was available for the TVX drilling; however, very little of these drilling results are the subject of this report.

 

Lumina completed a resampling of the TVX holes from Los Cuyes as described in the 2018 Technical Report (Sim and Davis, 2018). Drill programs from 2004–2007 had a higher failure rate for gold in certified reference standards than would normally be acceptable; however, duplicate samples validated original assays. The failure rate for the 2007–2008 program was also higher than acceptable. Failures were found to be related to sample labelling errors rather than repeatability in resampled assays.

 

Quality control failures for programs from 2012–2015 were addressed with programs of remedial assay analysis. Following this extensive check program, quality control issues with drill programs carried out by previous operators were deemed by the authors to have been adequately addressed.

 

  
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For the Lumina/Luminex drill programs, a review of the QAQC protocols was conducted prior to drilling and formalized in a detailed QAQC manual developed by Lumina/Luminex. Each drilling phase was reviewed by a QP who was on site during the drill program. The procedures for core processing and the insertion of blanks and standards were examined. The QAQC program was conducted in accordance with industry best practices.

 

During the 2017–2018 drill program, 1,116 samples were analysed: 55 were blanks, 55 were certified reference material, 56 were coarse duplicates, and the remaining 950 samples were drilling core. After each batch of analytical results came in, the QAQC samples were reviewed by a Lumina geologist. Lumina’s QAQC consultant also reviewed the data on a regular basis.

 

During the 2019–2021 drill program, 15,604 samples were analysed: 571 were blanks, 397 were certified reference material, 384 were fine duplicates, 386 were coarse duplicates, and the remaining 13,866 samples were drilling core. After each batch of analytical results came in, the QAQC samples were reviewed by a Luminex geologist. Luminex’s QAQC consultant also reviewed the data on a regular basis.

 

Luminex’s QAQC consultant confirmed that the results from drill programs throughout the 2019–2020 program are acceptable.

 

11.3  Analytical Quality Control Data Validation

 

The SRK team was provided with the database named CN_DH_Export_Database_8Sept2023.xlsx which includes the QAQC data for several deposits from 1994 to 2023.

 

 

Certified Reference Materials

 

The monitoring of assay reliability of Camp, Los Cuyes, Soledad and Enma deposit included insertion of samples of certified reference materials (CRM).

 

The standards from Inspectorate Services were prepared from blended ore from the Condor project. The reported from 3.5 to 10.5% analytical variance of the standard material provided by Inspectorate is considered too high for use as reference material on the Condor project and no longer used from 2007.

 

The details are presented in Table 11.1.

 

Table 11.1:     Standards from Inspectorate Services Summary for the Condor Project

 

Manufacturer Reference No Matrix

Au

ppm

Au tolerance
(ppm)
Au variance
(%)
Inspectorate Services Peru GEO-184 STD-1 Condor blended ore 1.05 0.11 10.48%
Inspectorate Services Peru GEO-269 STD-2 Condor blended ore 2.23 0.21 9.42%
Inspectorate Services Peru GEO-273 STD-3 Condor blended ore 3.19 0.3 9.40%
Inspectorate Services Peru GEO-309 STD-4 Condor blended ore 3.82 0.13 3.40%

 

Source: 20070824_SRM_CertifiedReferenceMaterial_QAQC

 

  
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The majority of the CRM material was however sourced from CDN Resource Laboratories Ltd. (CDN) or OREAS (Table 11.2). The CRMs used in Condor Project are summarized in Table 11.3.

 

Table 11.2:     CRM Reference Value Summary for the Condor Project

 

  Reference Value 2 Standard Deviation    
CRM ID Au
g/t
Cu
%
Ag
g/t
Au Cu Ag In Use Count of Sample
12a 11.79     0.48     2012 8
152a 0.116 0.385   0.01 0.019   2012 3
15Pa 1.02     0.05     2007-2012 38
15Pc 1.61     0.09     2007-2013 44
15d 1.559     0.084     2012-2013 11
15g 0.527     0.046     2012 54
15h 1.019     0.05     2012 14
17Pb 2.56     0.23     2007-2013 37
18Pb 3.62     0.14     2007-2008 27
2Pd 0.885     0.058     2012-2013 16
503 0.687 0.566 1.63 0.048 0.0306 0.24 2013 21
504c 1.48 1.11 4.22 0.09 0.06 0.576 2019-2023 146
505 0.555 0.321 1.53 0.028 0.016 0.144 2021-2022 29
53P 0.38 0.413   0.038 0.032   2007-2013 30
54Pa 2.9 1.55   0.22 0.05   2013 2
61Pa 4.46   8.54 0.27   0.7 2007-2008 27
62d 9.64     0.64     2012 7
62Pa 10.5   8.37 0.66   1.36 2007-2008 21
67a 2.238 0.0325 33.6 0.192 0.002 4 2012-2013 8
68a 3.89 0.0392 42.9 0.3 0.003 3.4 2012-2013 10
7Pb 2.77     0.11     2007-2013 28
CDN-CM-14 0.792 1.058   0.078 0.062   2013 25
CDN-CM-25 0.228 0.191   0.03 0.006   2013 53
CDN-CM-26 0.372 0.246   0.048 0.016   2013 168
CDN-CM-27 0.636 0.592   0.068 0.03   2017-2022 169
CDN-CM-28 1.38 1.36   0.17 0.08   2017-2019 60
CDN-CM-30 1.3 0.73 15.9 0.12 0.034 1.3 2013 88
CDN-CM-36 0.316 0.23 2.1 0.034 0.01 0.2 2017-2018 18
CDN-CM-43 0.309 0.233   0.04 0.012   2019-2020 110

 

Sources: Summary by SRK based on CRMS certificate and the file CN_DH_Export_Database_8Sept2023.xlsx from Adventus

 

  
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Table 11.3:     CRM Usage at the Condor Project

 

Area QAQC_ID Count of Sample In Use
  504c 68 2019-2020&2022
Camp Condor 505 18 2022
  CDN-CM-27 134 2019-2020&2022
  CDN-CM-28 42 2019
  CDN-CM-43 105 2019-2020
  15Pc 2 2007
  17Pb 1 2007
  18Pb 1 2007
  504c 1 2021
  53P 1 2007
Enma 61Pa 1 2007
  62Pa 1 2007
  7Pb 1 2007
  CDN-CM-27 1 2021
  STD-0 26 2005
  STD-1 29 2005
  STD-2 58 2005
  STD-3 54 2005
  STD-4 19 2005
  12a 8 2012
  15g 7 2012
  15Pa 13 2007
  15Pc 9 2007
  17Pb 13 2007
  18Pb 12 2007
  504c 74 2020-2023
  505 11 2021-2022
Los Cuyes 53P 10 2007
  61Pa 13 2007
  62d 7 2012
  62Pa 9 2007
  7Pb 11 2007
  CDN-CM-27 12 2020-2022
  STD-0 5 2004
  STD-1 56 2005
  STD-2 61 2004
  STD-3 62 2004
  STD-4 50 2006
  15g 42 2012
Soledad 15h 3 2012
  15Pa 22 2007&2012
  15Pc 22 2007
  17Pb 15 2007

 

  
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Area QAQC_ID Count of Sample In Use
  18Pb 12 2007
  2Pd 5 2012
  504c 3 2020
  53P 15 2007
  61Pa 11 2007
  62Pa 10 2007
  7Pb 13 2007
  CDN-CM-27 3 2020
  CDN-CM-43 5 2020
  STD-1 33 2006
  STD-2 39 2006
  STD-3 33 2006

 

Sources: Summary by SRK based on CN_DH_Export_Database_8Sept2023.xlsx from Adventus

 

Due to the large number of standard samples used, SRK chose some CRMs with more than 3 samples to be statistically significant for verification. Detailed statistics and standard performance are presented in Table 11.4 to Table 11.7 and Figure 11.3 to Figure 11.5. The insertion rates of QAQC samples has varied significantly over the projects history, and no consistent standard (SRK recommend a minimum of 1 QAQC sample in 20 or 5%).

 

Table 11.4:     Selected CRM Results Summary for the Camp deposit

 

    Statistics CDN-CM-43 (Au) CDN-CM-27 (Au) CDN-CM-28 (Au)
Project Camp Sample Count 105 105  
Data Series 2019-2020 Expected Value 0.31 0.23  
Data Type Core Samples Standard 0.04 0.02  
    Deviation      
Commodity Au, Cu Data Mean 0.29 0.23  
Laboratory   Outside 2StdDev 19% 7%  
Analytical Method   Below 2StdDev 17 2  
Detection Limit   Above 2StdDev 3 5  
    Statistics CDN-CM-28 (Au) CDN-CM-28 (Cu)  
Project Camp Sample Count 41 42  
Data Series 2019 Expected Value 1.38 1.36  
Data Type Core Samples Standard Deviation 0.17 0.03  
Commodity Au, Cu Data Mean 1.41 1.33  
Laboratory   Outside 2StdDev 12% 2%  
Analytical Method   Below 2StdDev 2 1  
Detection Limit   Above 2StdDev 3 0  
    Statistics CDN-CM-27 (Au) CDN-CM-27(Cu)  
Project   Sample Count 132 134  
Data Series 2019-
2020&2022
Expected Value 0.64 0.59  

 

  
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    Statistics CDN-CM-43 (Au) CDN-CM-27 (Au) CDN-CM-28 (Au)
Data Type Core Samples Standard
Deviation
0.07 0.04  
Commodity Au, Cu Data Mean 0.64 0.59  
Laboratory   Outside 2StdDev 12% 5%  
Analytical Method   Below 2StdDev 4 5  
Detection Limit   Above 2StdDev 12 2  
    Statistics 504c (Au) 504c (Ag) 504c (Cu)
Project   Sample Count 68 68 68
Data Series 2019- Expected Value 1.48 4.22 1.11
  2020&2022      
Data Type Core Samples Standard 0.09 0.58 0.27
    Deviation      
Commodity Au, Ag, Cu Data Mean 1.45 4.36 1.09
Laboratory   Outside 2StdDev 3% 12% 4%
Analytical Method   Below 2StdDev 2 0 3
Detection Limit   Above 2StdDev 0 8 0
    Statistics 505 (Au) 505 (Ag) 505 (Cu)
Project   Sample Count 18 18 18
Data Series 2019-
2020&2022
Expected Value 0.56 1.53 0.32
Data Type Core Samples Standard 0.03 0.14 0.25
    Deviation      
Commodity Au, Ag, Cu Data Mean 0.52 1.38 0.31
Laboratory   Outside 2StdDev 11% 28% 6%
Analytical Method   Below 2StdDev 2 4 1
Detection Limit   Above 2StdDev 0 1 0

 

  
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Figure 11.3:     Selected CRMs Performances for the Camp Deposit

 

 
 
 
 
 
 
 

 

  
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Table 11.5:     Selected CRM Results Summary for the Los Cuyes deposit

 

  Statistics 17Pb (Au) 7Pb (Au) 18Pb (Au)
Project Los Cuyes Sample Count 13 11 12
Data Series 2007 Expected Value 2.56 2.77 3.62
Data Type Core Samples Standard
Deviation
0.23 0.11 0.14
Commodity Au Data Mean 2.61 2.74 3.54
Laboratory   Outside 2StdDev 0% 27% 25%
Analytical Method   Below 2StdDev 0 3 2
Detection Limit   Above 2StdDev 0 0 1
    Statistics 53P (Au) 53P (Cu)  
Project   Sample Count 10 10  
Data Series 2007 Expected Value 0.38 0.41  
Data Type Core Samples Standard
Deviation
0.04 0.01  
Commodity Au,Cu Data Mean 0.38 0.41  
Laboratory   Outside 2StdDev 0% 0%  
Analytical Method   Below 2StdDev 0 0  
Detection Limit   Above 2StdDev 0 0  
    Statistics 504c (Au) 504c (Ag) 504c (Cu)
Project   Sample Count 70 74 73
Data Series 2020-2023 Expected Value 1.48 4.22 1.11
Data Type Core Samples Standard
Deviation
0.09 0.58 0.77
Commodity Au,Ag,Cu Data Mean 1.42 4.02 1.07
Laboratory   Outside 2StdDev 16% 19% 10%
Analytical Method   Below 2StdDev 11 9 7
Detection Limit   Above 2StdDev 0 5 0
    Statistics 505 (Au) 505 (Ag) 505 (Cu)
Project   Sample Count 11 11 11
Data Series 2021-2022 Expected Value 0.56 1.53 0.32
Data Type Core Samples Standard
Deviation
0.03 0.14 0.10
Commodity Au,Ag,Cu Data Mean 0.54 1.45 0.32
Laboratory   Outside 2StdDev 27% 18% 9%
Analytical Method   Below 2StdDev 3 2 0
Detection Limit   Above 2StdDev 0 0 1

 

  
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Figure 11.4:     Selected CRMs Performances for the Los Cuyes Deposit

 

 
   
     
     
     
     
 

 

  
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Table 11.6:     Selected CRM Results Summary for the Soledad Deposit

 

  Statistics 7Pb (Au) 61Pa (Au) 62Pa (Au)
Project Soledad Sample Count 13 11 10
Data Series 2007 Expected Value 2.77 4.46 10.50
Data Type Core Samples Standard Deviation 0.11 0.70 0.66
Commodity Au Data Mean 2.72 4.48 9.72
Laboratory   Outside 2StdDev 8% 0% 60%
Analytical Method   Below 2StdDev 1 0 6
Detection Limit   Above 2StdDev 0 0 0
    Statistics 53P (Au) 17Pb (Au) 18Pb (Au)
Project   Sample Count 15 15 12
Data Series 2007 Expected Value 0.38 2.56 3.62
Data Type Core Samples Standard Deviation 0.04 0.23 0.14
Commodity Au Data Mean 0.45 2.45 3.54
Laboratory   Outside 2StdDev 33% 13% 25%
Analytical Method   Below 2StdDev 0 1 3
Detection Limit   Above 2StdDev 5 1 0
    Statistics 15g (Au) 15h (Au) 15Pc (Au)
Project   Sample Count 42 3 22
Data Series 2012 Expected Value 0.53 1.02 1.61
Data Type Core Samples Standard Deviation 0.05 0.05 0.09
Commodity Au Data Mean 0.74 1.00 0.97
Laboratory   Outside 2StdDev 62% 0% 100%
Analytical Method   Below 2StdDev 3 0 22
Detection Limit   Above 2StdDev 23 0 0
    Statistics 15Pa (Au) 2Pd (Au)  
Project   Sample Count 22 5  
Data Series 2007&2012 Expected Value 1.02 0.89  
Data Type Core Samples Standard Deviation 0.05 0.06  
Commodity Au Data Mean 0.97 0.89  
Laboratory   Outside 2StdDev 23% 0%  
Analytical Method   Below 2StdDev 5 0  
Detection Limit   Above 2StdDev 0 0  

 

  
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Figure 11.5:     Selected CRMs Performances for the Soledad Deposit

 

   
 
     
   
     
 

 

  
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Table 11.7:     Selected CRM Results Summary for the Enma Deposit

 

  Statistics 15Pc (Au) 17Pb (Au) 18Pb (Au)
Project Enma 2 1 1 18
Data Series 2007 1.61 2.56 3.62 0.23
Data Type Core Samples 0.09 0.23 0.14 0.01
Commodity Au 1.28 2.64 3.59 0.22
Laboratory   50% 0% 0% 11%
Analytical Method   1 0 0 2
Detection Limit   0 0 0 0
    Statistics 15Pc (Au) 17Pb (Au) 18Pb (Au)
Project   Sample Count 2 1 1
Data Series 2007 Expected Value 1.61 2.56 3.62
Data Type Core Samples Standard Deviation 0.09 0.23 0.14
Commodity Au Data Mean 1.28 2.64 3.59
Laboratory   Outside 2StdDev 50% 0% 0%
Analytical Method   Below 2StdDev 1 0 0
Detection Limit   Above 2StdDev 0 0 0
    Statistics 7Pb (Au)    
Project   Sample Count 1    
Data Series 2007 Expected Value 2.77    
Data Type Core Samples Standard Deviation 0.11    
Commodity Au Data Mean 2.75    
Laboratory   Outside 2StdDev 0%    
Analytical Method   Below 2StdDev 0    
Detection Limit   Above 2StdDev 0    
    Statistics 504c (Au) 504c (Ag) 504c (Cu)
Project   Sample Count 1 1 1
Data Series 2021 Expected Value 1.48 4.22 1.11
Data Type Core Samples Standard Deviation 0.09 0.58 0.06
Commodity Au,Ag,Cu Data Mean 1.49 4.00 1.09
Laboratory   Outside 2StdDev 0% 0% 0%
Analytical Method   Below 2StdDev 0 0 0
Detection Limit   Above 2StdDev 0 0 0
    Statistics CDN-CM-27 (Au) CDN-CM-27(Cu)  
Project   Sample Count 1 1  
Data Series 2012 Expected Value 0.64 0.59  
Data Type Core Samples Standard Deviation 0.07 0.03  
Commodity Au Data Mean 0.62 0.58  
Laboratory   Outside 2StdDev 0% 0%  
Analytical Method   Below 2StdDev 0 0  
Detection Limit   Above 2StdDev 0 0  

 

  
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Blanks

 

Condor utilized six different types of blank material. The details of blanks submitted to the analytical laboratories are shown in Table 11.8 with control charts for Au shown in Figure 11.6. The Au results are representative of the other analysed variables and indicate that there is not regular between sample contamination during the sample preparation process.

 

Table 11.8:     Blanks Summary for the Condor Project

 

Area QAQC_ID QC Samples Number In Use
Camp Glass-LAC 536 2019-2020&2022
  22P 7 2007
Enma BLK 157 2005-2007
  Glass-LAC 6 2021
  22b 22 2012
Los Cuyes 22P 81 2007
  BLK 235 2004-2007
  Glass-LAC 298 2020-2023
  22b 56 2012
Soledad 22P 99 2007
  BLK 147 2006-2007
  Glass-LAC 13 2020
  22b 18 2012
  22d 192 2013
Santa Barbara 22P 15 2008
  23a 229 2012-2013
  BLK 1 2008
  Glass-LAC 55 2017-2018

 

Figure 11.6:     Selected Blanks Performances Charts for Au

 

 
  Camp Enma

 

  
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Figure 11.6:     Selected Blanks Performances Charts for Au

 

  Los Cuyes Soledad

 

Duplicates

 

The Condor Project QAQC protocols include the insertion of field duplicates, coarse reject duplicates, and pulp duplicates. The summary of duplicates for the Condor Project is shown in Table 11.9.

 

The generally accepted criterion recommended by the QP are as follows:

 

Field duplicates: 80% samples should have a half absolute relative difference (HARD) less than 20%.

 

Coarse duplicates: 80% samples should have a HARD less than 20%.

 

Pulp duplicates: 90% samples should have a HARD less than 10%.

 

The Scatter and HARD plots of field duplicates, coarse duplicates and pulp duplicates for gold are presented from Figure 11.7 to Figure 11.9.

 

Table 11.9:     Duplicates Summary for the Condor Project

 

Area QC Type In Use QC Samples Number
Camp COARSE DUP 2019-2022 383
FINE DUP 2019-2022 375
Enma COARSE DUP 2005-2021 14
FINE DUP 2021-2021 3
  COARSE DUP 2004-2023 512
Los Cuyes FIELD DUP 2012 22
  FINE DUP 2020-2023 215
  COARSE DUP 2007-2020 14
Soledad FIELD DUP 2012 56
  FINE DUP 2020 10

 

The coarse duplicates show relatively good repeatability in the following charts. There is a relatively low scatter round the deal correlation line, and the HARD plot shows that more than 80% of the pairs have a HARD value of less than 20%.

 

  
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Figure 11.7: Coarse Duplicates Scatter and HARD Plot for Gold

 

 

 

The field duplicates show a lower repeatability than the coarse (crusher) duplicates. The coarse duplicates do not meet the expected precision defined by 8% of the pairs having a HARD value of less than 20%. This is an indication of a high nugget effect in the data.

 

  
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Figure 11.8: Field Duplicates Scatter and HARD Plot for Gold

 

 

 

  
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The scatter plot shows good repeatability and low scatter in the scatter plot in Figure 11.9. While the HARD plot indicates that the expected precision is not achieved (90% of the pairs with a HARD value of less than 10%) the performance of the pulp duplicates is still considered acceptable for a deposit with coarse gold.

 

Figure 11.9: Pulp Duplicates Scatter and HARD Plot for the Gold

 

 

 

  
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Umpire Samples

There are only the umpire samples assay of Au in 2005 and Au assay of drill hole DCU-17B in 2011 for Los Cuyes Deposit are available. The performance is shown in Figure 11.10. For drill hole DCU-17B the correlation is generally good below 10 g/t. The ALS Chemex data appears to be reported to an upper limit of 10 g./t, and the over limit values are not reported.

 

Figure 11.10: Umpire Samples Scatter for the Los Cuyes Deposit

 

 

 

11.4  Recommendations and Conclusions

 

The QP is of the opinion that core sampling, logging and storage procedures are standardized, and that the analytical methods and processes generally comply with industry standards.

 

The exploration team at the Condor Project demonstrated competence with respect to the managing, assessment and correction of analytic QAQC data.

 

The bias observed in some lower grades may be as a result of the Laboratory lower detection limits.

 

There are insufficient samples to be statistically significant for the Enma deposit.

 

Overall, the QAQC monitoring program is consistent with common industry practice and demonstrates acceptable accuracy and precision for the analytical results.

 

SRK recommends that:

 

SVM revise their protocols so that QC samples are inserted using a systematic approach at a rate of 1 sample in every 20 samples (5%).

 

Continue to submit all QAQC samples (with no identification), so that the results are not known by the laboratory.

 

  
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Validate the QAQC datasets to enable consistent year-to-year reporting of results. Laboratory and Laboratory report IDs should also be fully populated in the assay and QAQC databases.

 

Address over limit issues with the umpire laboratory assays.

 

Submit at least 5% of drilling samples to a third-party umpire laboratory for check analysis on a regular basis.

 

  
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12  Mineral Processing and Metallurgical Testing
12.1  Introduction

The metallurgical testing was reviewed by Mr Lanliang Niu, a professional engineer with SRK CN with over 30 years’ experience in processing testing and studies, production management and technical consultancy service.

Plenge Laboratory in Lima, Peru and other laboratories conducted mineralogical studies and metallurgical tests on composite samples of the gold deposits of Condor Project. The list of reports is as follows:

Breccias - San Jose - Ecuador, Direct Cyaniding Metallurgical Testwork, May 2004, Goldmarca Mining Peru S.A.C.
San Jose Ore Evaluation Testwork, Condor Gold Project for Goldmarca Limited, May 2006, Independent Metallurgical Laboratories Pty Ltd.
Report of Investigation No. 18525, Condor Project Base Camp Samples Progress Report. dated July 24, 2020. Plenge Laboratory.
Report of Investigation No.18525-73-89, Progress Report, Luminex Condor North Project, Camp, Los Cuyes, Enma Samples, May 26, 2021, by C.H. Plenge & C.I.A. S.A. of Lima, Peru.
Report of Investigation No. 18702, Condor Project Los Cuyes West (High Grade, Low Grade), Breccia Pipe, dated August 29, 2023. Plenge Laboratory.

SRK reviewed these reports above and summarized the testing results in this section.

12.2  Los Cuyes West

Three composite samples known as Los Cuyes West low-grade ore, Los Cuyes West high-grade ore and Breccia Pipe ore were tested by Plenge Laboratory in August 2023. The tests and results are summarized below.

 

12.2.1  Head Assay and Mineral Composition

A representative split from each sample and the Master Composite (MC) formed by taking equal parts of each sample were assayed as shown in Table 12.1. Bulk mineralogy by powder XRD is shown in Table 12.2.

Quartz and muscovite represent roughly 80% of the siliceous gangue while pyrite represents the major sulphide gangue ranging from 5.3% for Los Cuyes West to 7.1% for Brecia Pipe. The zinc and lead sulphides are present as sphalerite (ZnS) and galena (PbS).

 

  
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Table 12.1:     Head Assays for Los Cuyes West and Breccia Pipe Samples

 

    Los Cuyes West Breccia Pipe Master
Element Unit Low Grade High Grade Mean Grade Composite
Ag g/t 12.0 41.7 11.4 21.7
Au1 g/t 0.738 3.797 1.110 1.882
Au2 g/t 0.712 3.499 1.006 1.739
Au Average g/t 0.725 3.648 1.058 1.81
Cu % 0.02 0.06 0.04 0.04
Pb % 0.05 0.22 0.02 0.10
Zn % 0.40 0.91 0.43 0.58
Fe % 5.36 7.19 4.93 5.83
As g/t 33 518 35 195
S total % 3.11 5.42 3.22 3.92
C total % 0.46 0.48 0.48 0.47

Source: Report of Investigation No.18702, August 29, 2023, Plenge Laboratory

 

Table 12.2:      Bulk Mineralogy by XRD for Los Cuyes West and Breccia Pipe Samples

 

  Distribution %  
Mineral Los Cuyes West  
  Low Grade   High Grade Breccia Pipe
Quartz 47.2 48.1 52.1
Muscovite 33.4 33.7 27.5
Chamosite 5.6 3.9 -
Pyrite 5.3 5.3 7.1
Illite 1.1 1.0 2.4
Sphalerite 0.7 0.7 1.4
Kaolinite - 1.0 1.7
Alunite - - 1.2
Others 6.7 6.3 6.6
Total 100.0 100.0 100.0

Source: Report of Investigation No.18702, August 29, 2023, Plenge Laboratory

 

12.2.2  Gravity Concentration

An exploratory gravity concentration test was performed in a laboratory Falcon 4B centrifugal concentrator at a grind size of P80=210µm and the concentrate was cleaned once by panning yielding the results as shown in Table 12.3. The concentrate mass pull was 0.2% and the gold recovery is 14.9%. The test results suggest the presence of gravity recoverable gold.

 

  
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Table 12.3: Gravity Concentration for Master Composite of Los Cuyes and Breccia Pipe

 

Product

Yield

%

Grad

Ag

e, g/t

Au

Recovery, %

Ag

 

Au

Gravity Concentrate 0.20 549.5 134.3 5.2 14.9
Tail 99.8 20.1 1.53 94.8 85.1
Head calculated 100.0 21.2 1.79 100.0 100.0
Head assayed   21.7 1.81    

Source: Report of Investigation No.18702, August 29, 2023, Plenge Laboratory

 

 

12.2.3  Cyanidation

Whole ore cyanidation (WOCN) and CIL were explored at 100% passing 10 Mesh (2mm) and P80=75µm at cyanide concentration of 1.0 g/L NaCN. The results are listed in Table 12.4 and shown in Figure 12.1 for gold dissolution rate and in Figure 12.2 for silver dissolution rate.

The highest gold extractions were achieved for Los Cuyes West High Grade at 94.5% followed Los Cuyes Low West grade at 91.1% and lastly for Breccia Pipe at 87.1%. The low silver extraction are expected due to the presence of silver sulphides. The gold extractions of CIL cyanide leach were a little bit higher than that of standard WOCN suggesting a slight preg-robbing effect.

 

Table 12.4: Whole Ore Cyanidation Results for Los Cuyes West and Breccia Pipe

 

                Reagent  
    Head Calcd g/t Residue g/t Extraction1 % Consumption NaCN Add
Size Process             kg/t kg/t
    Ag Au Ag Au Ag Au NaCN CaO  
Los Cuyes West (Low Grade)                
100%-10M STD 12.8 0.732 9.0 0.29 29.5 60.3 0.39 1.1 2.65
P80=75µm STD 12.8 0.732 8.4 0.09 34.3 87.2 0.66 1.0 1.80
P80=75µm CIL 12.1 0.740 7.9 0.07 34.4 91.1 1.25 1.0 1.97
Los Cuyes West (High Grade)                
100%-10M STD 41.4 3.900 29.4 1.51 29.0 61.3 1.01 1.5 3.64
P80=75µm STD 42.2 3.829 25.8 0.36 39.0 90.5 1.35 1.3 2.21
P80=75µm CIL 40.4 3.860 27.4 0.21 32.2 94.5 1.93 1.1 2.41
Breccia Pipe                    
100%-10M STD 12.1 1.040 8.6 0.49 28.8 52.8 0.54 1.4 3.03
P80=75µm STD 12.4 1.016 8.5 0.15 31.5 85.3 0.79 1.2 1.90
P80=75µm CIL 10.8 1.011 7.1 0.13 34.2 87.1 1.56 1.0 2.15

Source: Report of Investigation No.18702, August 29, 2023, Plenge Laboratory

Notes: 1The extraction is calculated with respect to the head calculated.

  
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Figure 12.1: Gold Leach Curves of WOCN for Los Cuyes West and Breccia Pipe

 

 

 

Source: Report of Investigation No.18702, August 29, 2023, Plenge Laboratory

 

 

 

 

Figure 12.2: Silver Leach Curves of WOCN for Los Cuyes West and Breccia Pipe

 

 

 

Source: Report of Investigation No.18702, August 29, 2023, Plenge Laboratory

 

  
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12.2.4  Bulk Flotation

Under grind size of P80=75µm, for all bulk flotation tests were carried out. The results are listed in Table 12.5. High gold and silver recoveries are achieved indicating the ores are amenable to a flotation process.

 

Table 12.5:       Bulk Flotation Results for Los Cuyes West and Breccia Pipe

 

    Los Cuyes West    
Parameter Unit Low Grade High Grade Breccia Pipe  
Concentrate Mass Pull % 9.8 15.1 11.3  
  Ag g/t 118.5 248.0 102.0  
  Au g/t 8.1 26.9 9.4  
Concentrate Grade Cu % 0.13 0.31 0.24  
  Pb % 0.52 1.32 0.15  
  Zn % 2.73 3.94 3.12  
  S total % 26.0 29.7 26.0  
  Ag % 83.9 86.8 95.0  
  Au % 93.4 95.9 97.8  
Recovery Cu % 70.9 86.0 91.1  
  Pb % 85.0 92.5 65.6  
  Zn % 64.1 63.1 78.5  
  S total % 83.3 83.0 96.2  
  Ag g/t 2.5 6.7 0.7  
  Au g/t 0.06 0.20 0.03  
Tails Grade Cu % 0.01 0.01 0.00  
  Pb % 0.01 0.02 0.01  
  Zn % 0.17 0.41 0.11  
  S total % 0.57 1.08 0.13  
  Ag g/t 13.9 43.0 12.2  
  Au g/t 0.85 4.22 1.09  
Head Grade (Calculated) Cu % 0.02 0.05 0.03  
  Pb % 0.06 0.21 0.03  
  Zn % 0.42 0.94 0.45  
  S total % 3.07 5.39 3.05  

Source: Report of Investigation No.18702, August 29, 2023, Plenge Laboratory

 

12.2.5  Concentrate Cyanidation

CIL cyanide leach tests under intensive (10 g/L NaCN cyanide concentration) and standard (2.0 g/L NaCN cyanide concentration) conditions were carried out. The results are listed in Table 12.6 for intensive leach and in Table 12.7 for standard cyanide leach, respectively.

The results indicated both intensive and standard cyanidation can achieve a high gold extraction rate, and the sodium cyanide consumption was greatly reduced under mild conditions.

 

  
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The overall recoveries of bulk flotation and CIL of concentrate are shown in Table 12.8. The average recovery of the three samples is 37.3% for silver and 89.7% for gold.

 

Table 12.6:      Intensive CIL Cyanide Leach of Flotation Concentrate for Los Cuyes West and Breccia Pipe

 

        Recovery, %        
Time
hour
Los Cuyes West Low Grade   Los Cuyes West High Grade   Breccia Pipe
  Ag   Au   Ag Au   Ag   Au
2 47.2   85.2   41.8   91.7   43.8   91.9
4 51.1   89.9   44.9   94.3   45.3   92.6
8 57.1   93.0   48.6   95.9   48.7   92.4
24 63.5   94.7   52.8   96.3   52.2   91.8
Head Grade, g/t 104.8   8.36   256.1   28.67   105.8   9.95
Residue Grade, g/t 38.3   0.44   121.0   1.07   50.6   0.81
NaCN Consumption, kg/t   9.46       14.90       16.45  
Lime Consumption, kg/t   1.00       1.40       1.70  
NaCN Add, kg/t   44.59       46.69       48.52  

 

Source: Report of Investigation No.18702, August 29, 2023, Plenge Laboratory

 

 

 

Table 12.7:      Standard CIL Cyanide Leach of Flotation Concentrate for Los Cuyes West and Breccia Pipe

 

          Recovery, %        
Time
hour
Los Cuyes West Low Grade   Los Cuyes West High Grade   Breccia Pipe
  Ag   Au   Ag   Au   Ag   Au
1 19.9   51.9   28.3   79.8   29.3   53.8
2 26.2   83.3   32.3   93.5   33.9   68.4
4 31.3   85.2   35.9   95.6   37.7   82.8
8 35.5   89.1   39.0   96.2   39.6   87.8
24 41.8   93.1   42.5   96.8   41.9   91.1
Head Grade, g/t 118.5   8.08   247.6   26.88   102.3   9.40
Residue Grade, g/t 69.0   0.56   142.0   0.86   59.4   0.83
NaCN Consumption, kg/t   3.10       5.47       5.61  
Lime Consumption, kg/t   1.80       1.70       1.70  
NaCN Add, kg/t   9.24       9.72       9.69  

 

Source: Report of Investigation No.18702, August 29, 2023, Plenge Laboratory

 

  
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Table 12.8:     Overall Recovery of Bulk Flotation and Concentrate Cyanidation for Los Cuyes West and Breccia Pipe

 

  Bulk Concentrate     Recovery, %     Reagent
Composites Wt. Ag Au Flotation Cyanidation Overall Consumption
  % g/t g/t             kg/t
        Ag Au Ag Au Ag Au NaCN CaO
LC West Low Grade 9.8 118.5 8.1 83.9 93.4 41.8 93.1 35.1 87.0 0.31 0.2
LC West High Grade 15.1 247.6 26.9 86.8 95.9 42.5 96.8 36.9 92.9 0.82 0.3
Breccia Pipe 11.3 102.3 9.4 95.0 97.8 41.9 91.1 39.8 89.1 0.63 0.2
Average       88.5 95.7 42.1 93.7 37.3 89.7 0.59 0.2

 

Source: Report of Investigation No.18702, August 29, 2023, Plenge Laboratory

 

 

 

 

12.2.6  Flotation of Cyanide Leached Bulk Concentrate for Recovery of Silver, Lead and Zinc

The flow diagram is shown in Figure 12.3. The bulk flotation was performed at grind size of P80=75µm. Intensive cyanidation was applied to the bulk concentrate. Sequential selective flotation of the cyanide leach residues was tested to obtain a lead-silver concentrate and a zinc concentrate. The results are summarized in Table 12.9.

The results show that the average recovery of the three samples by cyanidation denoted as bullion in the table was 49.0% for silver and 90.2% for gold, respectively.

The lead concentrate assayed 1,873 g/t silver and 20.45% lead at recoveries of 10.8% and 32.2% respectively which were calculated with respect to the original feed. The zinc content in lead concentrate was high at 13.1%, suggesting if the regrinding is applied to the bulk concentrate, both the lead grade of lead concentrate and the zinc recovery of zinc concentrate may be increased. The separation between lead and zinc in the lead flotation circuit can also be improved by applying appropriate depressants and collectors.

The average zinc concentrate contained 121 g/t silver and 47.4% zinc at recoveries of 2.53% for silver and 36.1% for zinc respectively. The mass pull for the lead and zinc concentrates were 0.13% and 0.45%, respectively. Gold assays are not available for the concentrates because of insufficient weight. The overall silver recovery was 62.4%.

 

  
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Figure 12.3: Flow Diagram for the Bulk Flotation-Cyanidation-Pb Flotation-Zn Flotation

 

 

Source: Report of Investigation No.18702, August 29, 2023, Plenge Laboratory

 

 

Table 12.9:     Results of Bulk Flotation-Cyanidation-Pb Flotation-Zn Flotation

 

 

Products

Weight

%

 

Ag
g/t

 

Au
g/t

Assay
Cu

%

 

Pb

%

 

Zn

%

 

Ag

 

Au

Recovery %

Cu

 

Pb

 

Zn

      Los Cuyes West (Low Grade)          
Bulk Conc 10.2 104.8 8.40 0.13 0.39 2.57 85.7 95.2 75.3 81.6 58.5
Bullion1 - - - - - - 54.4 90.2 - - -
Ag/Pb Conc 0.08 1,748 - 1.53 23.19 10.69 10.3 - 5.9 38.8 2.1
Zn Conc 0.31 127.8 - 0.95 0.90 49.00 2.9 - 14.2 5.8 36.7
Overall Recovery             64.7 90.2 5.9 38.8 36.7
      Los Cuyes West (High Grade)          
Bulk Conc 13.9 256.1 28.67 0.30 1.25 4.77 87.4 95.0 84.6 83.9 71.9
Bullion1 - - - - - - 46.1 91.5 - - -
Ag/Pb Conc 0.21 2,653 - 0.49 32.33 9.66 12.7 - 1.9 38.6 2.2
Zn Conc 0.67 161.3 - 1.24 0.94 45.18 2.5 - 15.1 3.6 32.6
Overall Recovery             58.8 91.5 1.9 38.6 32.6
        Breccia Pipe            
Bulk Conc 10.5 105.8 9.95 0.29 0.21 3.35 89.3 96.8 68.2 67.2 73.5
Bullion1 - - - - - - 46.6 88.9 - - -
Ag/Pb Conc 0.09 1,216 - 6.41 5.84 22.78 9.4 - 16.1 19.1 4.7
Zn Conc 0.37 73.0 - 0.94 0.17 48.00 2.2 - 9.3 2.2 39.1
Overall Recovery             56.0 88.9 16.1 19.1 39.1
      Average of the above 3 samples          
Bulk Conc 11.5 165.9 17.01 0.25 0.68 3.69 87.5 95.7 76.0 77.6 68.0
Bullion1             49.0 90.2      
Ag/Pb Conc 0.13 1,873   2.81 20.45 14.38 10.8   8.0 32.2 3.0
Zn Conc 0.45 120.7   1.04 0.67 47.39 2.53   12.9 3.9 36.1
Overall Recovery             59.8 90.2 8.0 32.2 36.1
Note: 1Cyanide leach recovery against mill feed                  
                         

Source: Report of Investigation No.18702, August 29, 2023, Plenge Laboratory

 

  
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12.2.7  Flotation of Whole Ore Cyanidation Residue

An exploratory batch flotation test on the MC cyanidation residue after detox was conducted and the result is listed in Table 12.10.

The metallurgical balance shows that it was feasible to obtain a bulk lead-copper concentrate assaying 650 g/t silver, 3.81 g/t gold, 5.88% copper and 16.2% lead with recoveries of 18.6% silver, 0.78% gold, 34.9% copper and 61.9% lead. The concentrate mass pull was 0. 1%.

 

Table 12.10: Results of Whole Ore Cyanidation and Bulk Flotation of Cyanide Leached Residue of Los Cuyes Master Composite

 

Wt Grade (%) Distribution (%)
Product (%) Au Ag Cu Pb Zn Au Ag Cu Pb Zn
Bullion             87.1 49.4      
Concentrate 0.1 3.81 650 5.88 16.2 0.49 0.78 18.6 34.9 61.9 0.6
3rd Clnr tail 1.5 0.1 11.8 0.31 0.2 0.18 0.21 3.6 19.5 8.9 2.2
2nd Clnr tail 4.1 0.04 1.2 0.03 0.03 0.16 0.26 1.0 5.3 3.4 5.4
1st Clnr tail 23.2 0.06 1.2 0.01 0.01 0.17 2.08 5.7 10.0 6.4 32.8
Tail 71.1 0.09 1.5 0.01 0.01 0.10 9.58 21.7 30.4 19.5 59
Head Calc 100 0.09 2.4 0.02 0.04 0.12 100 100 100 100 100
Head Assay   0.10 2.7   0.03 0.13          

Source: Report of Investigation No.18525-73-89, Progress Report, May 26, 2021

 

12.3  Camp

Three composite samples of the Camp deposit referred as Low Grade, High Grade and Med Grade composites were tested by Plenge Laboratory in 2020. The tests and results are summarized below.

 

12.3.1  Head Assay and Mineral Composition

A representative split from each of the three samples and a Master Composite (MC), which was formed by taking equal parts from three samples, was assayed as shown in Table 12.11. The mineral composition is listed in Table 12.12. Like the Los Cuyes West deposit, the mineralized material from the Camp deposit is a sulfide ore suggesting bulk flotation is a suitable process to concentrate gold, silver and base metal minerals.

 

  
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Table 12.11: Head Assay Results of the Samples from the Camp Deposit

 

Element Unit Assays
LOW Grade MED Grade HIGH Grade Master Composite
Ag g/t 14.0 10.5 60.3 29.3
Au1 g/t 1.73 5.05 6.07 4.75
Au2 g/t 1.70 5.60 6.67 3.80
Au average g/t 1.72 5.33 6.37 4.28
Cu % 0.024 0.029 0.072 0.039
Pb % 0.07 0.03 0.39 0.18
Zn % 0.70 0.71 1.54 0.98
Fe % 4.44 4.19 5.82 5.37
As g/t 129 178 272 NA
S total % 3.52 2.48 7.04 4.20
S sulfide % 3.11 2.02 6.33 3.60
C total % 0.83 0.84 0.41 0.70
C organic % 0.10 0.10 0.08 0.10

Source: Report of Investigation No.18525 (Base Camp Samples Progress Report), July 24, 2020, Plenge Laboratory

 

Table 12.12:     Bulk Mineralogy by XRD for the Samples from the Camp Deposit

 

Mineral Distribution, %
LOW Grade MED Grade HIGH Grade
Quartz 40.2 29.4 39.5
Muscovite 23.9 11.3 16.5
Orthoclase 6.2 12.1 5.8
Butlerite 6.1 2.7 4.5
Albite 1.3 15.7 3.2
Microcline - - 5.3
Pyrite 4.3 3.1 8.9
Anorthite - 3.5 3.0
Labradorite -   1.0
Chamosite 1.3 6.0 1.0
Actinolite 1.0 1.0 -
Sphalerite 1.1 1.1 2.4
Rhodonite 1.4   1.2
Phlogopite 3.0 1.2 1.0
Clinochlore 1.0 1.0 1.0
Calcite 2.3 3.2 -
Andesine 1.0 1.0 -
Kaolinite - 1.7 -
N.D. 6.0 5.9 5.8
Total 100.0 100.0 100.0

Source: Report of Investigation No.18525 (Base Camp Samples Progress Report), July 24, 2020, Plenge Laboratory

 

  
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12.3.2  Gravity Concentration

Under the grind size of P80=210µm, a gravity concentration test by using a centrifugal concentrator and cyanidation tests on the gravity tails by WOCN and CIL in different grind sizes were carried out. The gravity concentration test results are listed in Table 12.13. The gravity concentration achieved a high- grade concentrate at a mass yield of 0.28%. The gold recovery was 35.2% at a concentrate grade of 600g/t. The result suggests that gravity concentration is applicable for the mineralized materials from the Camp deposit.

 

Table 12.13:     Gravity Concentration Result for the Master Composite of the Camp Deposit

Product Wt., % Assays, g/t Distribution, %
Ag Au Ag Au
Gravity Concentrate 0.28 1,377 600 11.9 35.2
Gravity Tail 99.7 28.3 3.06 88.1 64.8
Head Calculated 100.0 32.0 4.71 100.0 100.0
Head Assay   29.3 4.48    

Source: 1 Report of Investigation No.18525 (Base Camp Samples Progress Report), July 24, 2020, Plenge Laboratory

 

12.3.3  Cyanidation

Cyanide leach tests were conducted on the gravity concentrate. CIL cyanide leach tests were also conducted on the MC sample. The results are summarized in Table 12.14.

The grind size had a noticeable effect on the gold recovery for the gravity tails when the grind size was coarser than P80 75µm. There was no preg-robbing effect observed.

At grind size of P80=75µm, the gold leach extraction rate was high indicating the mineralized material from the Camp deposit was amenable to cyanidation.

WOCN result of the gravity concentrate achieved a high gold recovery, but the residue grade was still too high, and the silver recovery was low.

 

  
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Table 12.14:     Results of Gravity Tails Cyanidation for the Camp Deposit

 

Feed
Material
Cyanidation 
Method
1
Grind Size Head Assay g/t Residue Assay g/t Extraction % Consumption kg/t
P80 Ag Au Ag Au Ag Au NaCN Lime
  WOC 210 27.0 2.9 17.4 0.341 35.6 88.2 0.7 0.4
  WOC 75 22.6 2.51 13.9 0.118 38.3 95.3 0.9 0.8
Gravity Tails CIL 210 21.7 2.93 15.4 0.322 29.1 89.0 0.8 0.4
  CIL 150 25.3 3.06 16.1 0.225 36.3 92.6 0.6 2.1
  CIL 75 25.3 2.59 17.9 0.127 29.2 95.1 1.0 0.4
Gravity Conc. WOC 210 1299 571 525.7 1.646 59.5 99.7 16.9 0.8
  CIL 75 31.6 4.48 17.8 0.126 43.5 97.2 1.3 0.4
Feed CIL 53 31.1 4.31 17.4 0.092 44.0 97.9 1.1 0.9
  CIL 38 31.4 4.36 16.6 0.112 47.1 97.4 1.1 0.9

Note:1 Standard cyanidation: NaCN concentration=0.1%, pulp density=40%, leach time=24 hours, pH=11

Source: Report of Investigation No.18525 (Base Camp Samples Progress Report), July 24, 2020, Plenge Laboratory

 

The whole ore direct cyanidation (WOCN) tests were conducted on three Camp samples in 2021. Under the grind size of P80=75µm and 24 hours of cyanide leach time, the WOCN and CIL cyanide leach results are listed in Table 12.15.

 

Table 12.15: Test Results of the Whole Ore Cyanide Leach (WOCN) and CIL Cyanide Leach for the Camp Composite samples

 

 

Cyanidation
Method
Sample Head Grade (g/t) Residue Grade (g/) Extraction (%)

Reagent

Consumption (kg/t)

Au Ag Au Ag Au Ag NaCN CaO
  Low Grade 1.70 19.9 0.14 10.1 91.8 49.5 0.80 0.7
WOCN Med Grade 4.69 12.6 0.16 7.1 96.5 43.3 0.70 0.7
  High Grade 7.54 64.9 0.30 36.7 96.0 43.3 1.08 0.7
  Low Grade 1.77 21.9 0.14 12.8 92.1 41.5 0.98 0.7
CIL Med Grade 4.18 11.8 0.08 7.1 98.0 39.7 0.79 0.7
  High Grade 8.14 60.6 0.25 31.2 97.0 48.5 1.07 0.7

Source: Metallurgical Investigation No 18525-73-89 Progress Report, May 26, 2021, Plenge Laboratory

 

  
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12.3.4  Bulk Flotation

Bulk flotation tests on the gravity tails and the feed sample under different grind sizes were carried out. The bulk flotation is an “all sulfides flotation” aiming to float all sulfide minerals and precious metals to obtain a mixed concentrate. The results are summarized in Table 12.16. The bulk flotation achieved good results at all the grind sizes with the concentrate mass pull from 15.5% to 17.7% for gravity tails and 14.4% for the feed sample.

A set of tests for the Design of Experiment (DOE) were conducted to explore the gravity concentration, flotation feed grind size and flotation pulp density (% solid). The results are summarized in Table 12.17. High recoveries were achieved under all the tested grind sizes, but the concentrate recovery/mass pull was somewhat inverse to the grind size. Gravity concentration had a minor contribution to the overall recovery.

 

Table 12.16:Bulk Flotation of the Gravity Tails and the Feed Sample for the Camp Deposit

 

Feed
Material

Grind
Size
P80µm
Concentrate Recovery, %

Wt.
%

Ag
g/t
Au
g/t
Pb
%
Zn
%
Stotal
%
Ag Au Pb Zn Stotal
Gravity Tails 150 16.0 178 18.1 0.6 5.4 21.8 96.3 96.9 92.5 83.9 97.2
106 15.5 164 19.3 0.6 5.3 22.5 96.3 98.3 92.2 83.0 96.9
75 17.7 143 16.5 0.6 4.7 19.7 96.4 98.1 92.4 88.5 97.7
Feed Sample 150 14.4 187 32.1 1.0 5.6 25.9 96.3 98.5 94.5 78.8 96.8

Source: Report of Investigation No.18525 (Base Camp Samples Progress Report), July 24, 2020, Plenge Laboratory

 

Table 12.17: Bulk Flotation of the Design of Experiment for the Camp Deposit

 

Factor Response
Run Feed Size
P80 µm
% Solids Gravity Tail
Au g/t
Flotation Recovery % Wt. % Viscosity
cp
Au Ag Pb Zn
1 150 32.4 Yes 0.087 98.0 98.9 91.8 90.0 14.9 1.6
2 139 35.3 Yes 0.083 98.1 98.8 92.1 95.1 16.0 1.8
3 150 38.3 No 0.096 97.8 98.8 93.8 90.5 18.4 2.1
4 150 32.9 Yes 0.081 98.2 98.8 92.2 94.5 16.4 1.6
5 99 37.5 Yes 0.045 99.0 98.8 92.5 97.7 23.2 2.4
6 74 38.3 No 0.047 98.9 98.9 94.5 98.5 24.1 2.8
7 150 30.3 No 0.081 98.2 98.8 93.9 88.6 16.3 1.5
8 74 30.6 No 0.040 99.1 98.8 94.0 98.4 18.0 2.0
9 112 35.9 No 0.085 98.1 99.0 94.4 97.7 21.4 1.9
10 74 34.2 Yes 0.055 98.8 98.9 92.4 96.1 18.3 2.0

 

  
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  Factor   Response  
  Feed Size     Tail Flotation Recovery %   Viscosity
Run P80 µm % Solids Gravity Au g/t Au Ag Pb Zn Wt. % cp
11 112 31.8 No 0.055 98.8 98.9 94.1 98.3 18.2 1.7
12 74 30.2 Yes 0.035 99.2 98.8 92.1 96.9 19.2 1.9
13 99 37.4 Yes 0.058 98.7 99.0 92.7 96.2 21.6 2.4
14 116 31.0 Yes 0.071 98.4 98.9 92.1 94.4 16.5 1.6
15 150 38.2 No 0.122 97.3 98.9 94.3 89.7 17.4 2.1
16 150 30.1 No 0.083 98.1 98.8 93.8 97.6 16.1 1.5
17 74 30.4 No 0.046 99.0 98.9 93.6 98.4 20.1 1.9

Source: Report of Investigation No.18525 (Base Camp Samples Progress Report), July 24, 2020, Plenge Laboratory

 

 

12.3.5  Concentrate Cyanidation

The bulk flotation recovered a mixed concentrates with all the sulfide minerals and precious metals. The results of cyanide leach of these bulk concentrates are summarized in Table 12.18. The bulk concentrates came from different flotation tests without regrinding.

The gold recovery was satisfactory at grind size less than P80=125µm, except silver. The remaining silver and gold will be recovered into the lead concentrate and zinc concentrate during the subsequential lead and zinc sequential selective flotation. Generally, the finer the grind size, the higher the gold recovery. More testing should be carried out to determine the optimal grind size considering sequential selective lead and zinc flotation.

 

Table 12.18: Cyanidation of the Bulk Flotation Concentrate for the Base Camp

 

Grind Size Head Assay g/t Residue Assay g/t Extraction % Consumption kg/t
P80 µm Ag Au Ag Au Ag Au NaCN Lime
180 144 16.5 68.3 1.22 52.5 92.6 4.64 0.6
150 149 17.2 70.0 1.07 53.0 93.8 4.31 0.8
125 148 16.4 68.7 0.82 53.5 95.0 4.72 0.5
106 147 16.3 73.7 0.86 49.8 94.7 4.48 0.6
Average 147 16.6 70.2 0.99 52.2 94.0 4.54 0.63

Source: Report of Investigation No.18525 (Base Camp Samples Progress Report), July 24, 2020, Plenge Laboratory

 

 

12.3.6  Lead and Zinc Flotation of the Cyanide Leached Bulk Concentrate

The preliminary lead and zinc sequential selective flotation tests were conducted for the cyanide leached bulk concentrate under different grind size and different reagent regimes. The flow diagram is shown as Figure 12.3 on a previous page. The results are summarized in Table 12.19. The results show that the saleable lead concentrate and zinc concentrate were likely produced. Detailed optimization tests are recommended.

 

  
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Table 12.19:     Lead and Zinc Flotation of the Cyanide Leached Bulk Concentrate for the Camp Deposit

 

Grind Size   Wt. Ag Assay
Au
Pb Zn Distribution1%
P80 µm Product % g/t g/t % % Ag Au Pb Zn
106 Pb Conc. 0.3 3,324 1.01 52.4 3.86 6.7 0.01 24.8 0.2
Zn Conc. 1.0 317 0.83 4.28 2.32 2.4 0.05 7.7 0.5
125 Pb Conc. 0.3 2,472 1.01 42.9 6.56 4.4 0.01 18.6 0.3
Zn Conc. 3.2 417 1.98 4.18 40.3 9.0 0.26 21.7 24.1
150 Pb Conc. 0.3 2,405 1.17 39.1 23.7 4.6 0.01 18.5 1.3
Zn Conc. 0.7 169 5.75 2.34 1.62 0.9 0.15 3.0 0.2
180 Pb Conc. 0.3 1,513 0.76 29.4 3.31 3.5 0.01 16.9 0.2
Zn Conc. 5.4 268 3.19 2.32 47.8 9.9 0.63 21.3 55.4

Note: 1Distribution based on Gravity Feed. Lead and zinc in gravity concentrate taken as negligible.

Source: Report of Investigation No.18525 (Base Camp Samples Progress Report), July 24, 2020, Plenge Laboratory

 

12.3.7  Sequential Selective Flotation of the Whole Ore Cyanide Leach Residue

An exploratory flotation test on the MC cyanidation residue after detox was conducted and the result is listed in Table 12.20.

The metallurgical balance shows that it was feasible to produce a lead concentrate containing 3,348 g/t silver, 3.28 g/t gold and 44.2% lead with recoveries of 12.3% for silver, 0.08% for gold and 38.1% for lead. The concentrate mass pull was 0.1%.

A zinc concentrate was also produced, which contained 219 g/t silver, 2.5 g/t gold and 45.3 % zinc with recoveries of 8.7% for silver, 0.68% for gold and 59.7 for zinc. The concentrate mass pull was 1.3%. This flotation test was operated in an open circuit and the performance is expected to improve in a closed circuit.

 

Table 12.20:Results of the Whole Ore Cyanidation and Flotation of the Cyanide Leach Residue for the Camp Master Composite

 

Product Wt
(%)
Grade (%) Distribution (%)
Au Ag Cu Pb Zn Au Ag Cu Pb Zn
Bullion             95.7 44.6      
Pb Concentrate 0.1 3.28 3348 0.80 44.2 20.0 0.08 12.3 2.6 38.1 2.4
3rd Cleaner tail Pb 0.4 1.94 1292 1.09 11.0 41.5 0.15 15.2 11.2 30.4 16.2
2nd Cleaner tail Pb 0.4 1.02 288.0 0.71 2.30 37.9 0.08 3.4 7.4 6.3 15.0
Zn Concentrate 1.3 2.52 219 1.37 1.00 45.3 0.68 8.7 47.7 9.3 59.7
3rd Cleaner tail Zn 0.5 0.53 48 0.08 0.39 1.07 0.05 0.7 1.0 1.3 0.5
2nd Cleaner tail Zn 2.0 0.46 32 0.04 0.21 0.47 0.18 1.9 2.1 2.9 0.9
1st Cleaner tail Zn 12.1 0.55 24 0.02 0.07 0.24 1.35 8.8 6.3 5.9 2.9
Tail 83.2 0.10 1.8 0.01 0.01 0.03 1.70 4.5 21.7 5.8 2.5
Head Calc 100 0.21 18.6 0.04 0.14 1.01 100 100 100 100 100
Head Assay   0.201 18.0 0.04 0.18 0.98          

Source: Report of Investigation No.18525-73-89, Progress Report, May 26, 2021

 

  
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12.4  Soledad

 

12.4.1  Direct Cyanidation

San Jose is part of the Soledad deposit. A composite sample of San Jose was tested by direct cyanidation (WOCN) at two different grind sizes in 2004. A fine grind size and a long leaching time were applied to the WOCN tests. The results are shown in Table 12.21.

Gold extraction of 91.6% to 98.3% were achieved, indicating the WOCN process is suitable for the ore from San Jose deposit.

 

Table 12.21:     WOCN Test Results of San Jose Sample

 

  Residence Head Grade Residue Grade Extraction Reagent
Consumption
Grind Size Time (g/t) (g/) (%) (kg/t)
  (h) Au Ag Au Ag Au Ag NaCN CaO
P90=75µ 72 2.27 26.72 0.19 4.81 91.6 82.0 2.04 3.44
P100=75µ 96 1.94 29.91 0.033 4.20 98.3 86.0 2.10 5.69

Source: Breccias -Sanjose-Ecuador Direct Cyaniding Metallurgical Testwork, May 2004

 

 

Another composite sample was tested using WOCN and CIL processes under grind size of P80=106µm. The gold extractions were low as shown in Table 12.22. Compared with the result above, the grind size may be the controlling factor of gold extraction.

 

Table 12.22:     Cyanidation Results of the San Jose Composite Sample

 

    Head Grade Residue Grade Extraction Reagent
Consumption
Grind Size Time (g/t) (g/) (%) (kg/t)
  (h) Au Ag Au Ag Au Ag NaCN CaO
WOCN 48 4.17 8.81 1.14 5.0 72.6 43.3 1.64 6.6
CIL 48 3.97 6.70 1.45 4.0 63.4 40.3 1.53 6.1

Source: San Jose Ore Evaluation Testwork, May 2006, Independent Metallurgical Laboratories Pty Ltd.

 

 

 

12.4.2  Bulk Flotation Followed By Gravity Concentration And Cyanidation Process Options

A bulk flotation test was carried out at grind size of P80=500µm by using Potassium Amyl Xanthate (PAX) as the collector.

The flotation concentrate was leached by intensive cyanidation at the original grind size of P80=500µm and then the leach residue was reground to P80=106µm for the secondary step of intensive cyanidation. The flotation tail was subject to standard whole ore cyanidation after regrinding to P80=106µm.

  
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The test flowsheet is shown in Figure 12.4. The flotation result is presented in Table 12.23. The gold, silver and sulphide minerals were enriched in the concentrate, but the gold grade was low. The gold recovery was 72.8% leaving the tails grade high at 1.44g/t. The results are summarized in Table 12.24. The overall gold recovery was 80.7%.

 

Figure 12.4:     Flowsheet of Bulk Flotation at Coarse Grind Size and Cyanide leach of Bulk Concentrate

 

Source: SRK based on the metallurgical test report

 

Table 12.23:     Bulk Flotation Test Result of a San Jose Composite Sample

 

  Wt Grade (g/t) Grade (%) Distribution (%)
Product (%) Au Ag   Cu Pb Zn S Au Ag Cu Pb Zn S
Bulk Concentrate 16.05 20.15 32 0.117 0.023 2.61 41.2 72.8 67.1 61.5 46.8 92.1 81.00
Flot Tails 83.95 1.44 3 0.014 0.005 0.04 1.85 27.2 32.9 38.5 53.2 7.9 19.0
Calc Head 100.0 4.44 8 0.03 0.008 0.45 8.16 100.0 100.0 100.0 100.0 100.0 100.0
Assay Head   4.36 9 0.02 0.009 0.53 8.11            

Source: San Jose Ore Evaluation Testwork, May 2006, Independent Metallurgical Laboratories Pty Ltd.

 

Table 12.24:     Summary Results of Bulk Flotation and Cyanide Leach of the Bulk Concentrate

 

Flotation with Leaching of Float Conc with Subsequent
Regrinding and Leaching of Float Tail @ P80=106µm
Au Distribution
(%)
Au Extraction
(%)
Float Conc Au Distribution 72.8  
Float Conc Leach @ P80=500µm Au Extraction   52.6
Float Conc Releach @ P80=106µm Au Extraction   10.3
Float Conc Releach Residue Au Distribution 9.9  
Float Tails Au Distribution 27.2  
Float Tail Leach @ P80=106µm Au Extraction   17.8
Float Tail Leach @ P80=106µm Au Distribution 9.4  
Overall Au Recovery   80.7

Source: San Jose Ore Evaluation Testwork, May 2006, Independent Metallurgical Laboratories Pty Ltd.

 

  
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Because gold recovery from cyanide leach of the flotation tails was low, a gravity concentration test was conducted by using a Knelson centrifugal concentrator on the flotation tails after regrinding to P80=106µm.

Cyanidation tests on the gravity concentrate and the combined concentrate cyanide leach residue and gravity tails were conducted. The results are summarized in Table 12.25. The overall gold recovery raised to 88.2%.

 

Table 12.25:     Summary Results of Bulk Flotation, and Gravity Concentration and Cyanidation

 

Bulk Flotation Followed by Cyanide Leaching of Float Conc and
Subsequent Regrinding + Gravity Separation +Leaching of Float
Au
Distribution
Au
Extraction
 
Tail @ P80=106µm (%) (%)  
Float Conc Au Distribution 72.8    
Float Conc Leach @ P80=500µm Au Extraction   52.6  
Float Conc Releach @ P80=106µm Au Extraction   10.3  
Float Conc Releach Residue Au Distribution 9.9    
Float Tails Au Distribution 27.2    
Gravity Conc Intensive Leach Au Extraction 16.6  
Au Extraction from Conc Leach Residue + Gravity Tail   8.7  
Conc Leach Residue + Gravity Tail Releach Residue Au Distribution  1.9     
Overall Au Recovery   88.2  

Source: San Jose Ore Evaluation Test work, May 2006, Independent Metallurgical Laboratories Pty Ltd.

 

 

 

12.4.3  Multi-Stage Gravity Concentration Followed By Cyanidation Options

The gravity concentration test work completed on the San Jose composite sample involved an initial gravity (Knelson) concentration step at a grind size of 80% passing 500µm (P80=500µm) with the tails being subjected to further gravity concentrating after regrinding to P80=250µm and P80=106µm. Each gravity concentrate produced was intensively leached with cyanide with the final tails from each grind size given a standard cyanide leach. The test flowsheet is shown in Figure 12.5. Results are summarised in Table 12.26. The final results are presented in Table 12.27. The overall gold extraction was 92.1%.

 

Table 12.26: Results of Multi-Stage Gravity Concentration and Cyanidation Tests

 

Operation Product Wt Grade (g/t) Recovery (%)
    (%) Au Ag Au Ag
  Concentrate 1.8 61.2 48.0 25.7 9.8
Gravity Concentration@ P80=500µm Tails 98.2 3.30 8.3 74.3 90.2
  Head 100.0 4.36 9.0 100.0 100.0
Intensive Leach of Gravity Conc PLS       90.0 65.0
@P80=500µm Residue   6.15 17.0 10.0 35.0
  Calc Head   61.2 48.0 100.0 100.0
Combined Residue & Gravity Tails PLS       61.0 41.0
Leach @ P80=250µm Residue   1.64 5.0 39.0 59.0
  Calc Head   4.21 8.5 100.0 100.0

 

  
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Operation Product Wt Grade (g/t) Recovery (%)
    (%) Au Ag Au Ag
  Concentrate 9.1 18.8 20.8 44.6 26.0
Gravity Concentration @ P80=250µm Tails 90.9 2.33 6.0 55.4 74.0
  Head 100.0 3.82 7.34 100.0 100.0
Intensive Leach of Gravity Conc PLS       86.1 52.0
@P80=250µm Residue   2.61 10.0 13.9 48.0
  Calc Head   18.8 20.8 100.0 100.0
Combined Residue & Gravity Tails PLS       73.0 50.0
Leach @ P80=106µm Residue   0.63 3.0 27.0 50.0
  Calc Head   2.33 6.0 100.0 100.0
Gravity Concentration Concentrate 8.9 21.6 29.0 61.7 36.0
@ P80=106µm Tails 91.1 1.32 5.0 38.3 64.0
  Head 100.0 3.14 7.2 100.0 100.0
Intensive Leach of Gravity Conc PLS       87.1 42.0
@P80=106µm Residue   2.78 17.0 12.9 58.0
  Calc Head   21.6 29.0 100.0 100.0
Leach of Final Gravity Tails PLS       77.9 NA
@ P80=106µm Residue   0.32 <3 22.1 NA
  Calc Head   1.45 NA 100.0 100.0

Source: San Jose Ore Evaluation Testwork, May 2006, Independent Metallurgical Laboratories Pty Ltd.

 

 

 

Figure 12.5:     Multi-Stage Gravity Concentration and Cyanidation Test Flowsheet

 

Source: SRK based on the metallurgical test report

 

  
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Table 12.27:     Overall Results of Multi-stage Gravity Concentration and Cyanidation

 

Multi-Stage Gravity Concentration and Cyanidation of Gravity Au Distribution Au Extraction
Products (%) (%)
Primary Gravity Conc @ P80=500µm Au Recovery 25.7  
Primary Gravity Conc @ P80=500µm Au Extraction   23.1
Primary Gravity Conc Leach Residue Au Distribution 2.6  
Primary Gravity Tail @ P80=500µm Au Distribution 74.3  
Primary Gravity Tail plus Conc Leach Residue Au Distribution 76.9  
Secondary Gravity Conc @ P80=106µm Au Recovery 47.4  
Secondary Gravity Conc Intensive Leach Au Extraction   41.3
Secondary Gravity Tail plus Conc Leach Au Distribution 35.6  
Secondary Gravity Tail plus Conc Leach Au Extraction   27.7
Secondary Gravity Tail plus Conc Leach Residue Au Distribution 7.9  
Overall Au Recovery   92.1

Source: San Jose Ore Evaluation Testwork, May 2006, Independent Metallurgical Laboratories Pty Ltd.

 

12.5  Enma

 

12.5.1  Sample and Head Assay

The test sample was a composite of the core intervals of the drill hole ENMT21-01 from the Enma deposit. The head assay results are shown in Table 12.28. The average gold grade was 0.90 g/t, and the content of copper, lead, and zinc were low, while the sulphur content was high indicating high pyrite content.

 

Table 12.28:     Head Assay Result of Enma Master Composite

 

Element Au1 (g/t) Au2 (g/t) Ag (g/t) Cu Fe
Content (%) 0.92 0.89 36.6 0.078 6.63
Element Pb Zn As(ppm) Ssulfide Corganic
Content (%) 0.05 0.25 296 6.08 <0.01

Source: Report of Investigation No.18525-73-89, Progress Report

 

12.5.2  Whole Ore Cyanidation

The results of WOCN in bottle roll tests at two different grind sizes are listed in Table 12.29. The gold extraction was 74.2% at the grind size of P80=75µm and 76.4% at the grind size of P80=45 µm.

 

  
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Table 12.29:     Whole Ore Cyanidation Results of the Enma MC Sample

 

P80
(μm)
Time
(h)
Head Grade (g/t) Residue Grade (g/) Extraction (%) Reagent
Consumption (kg/t)
Au Ag Au Ag Au Ag NaCN CaO
75 24 0.97 36.8 0.25 11.8 74.2 67.9 0.7 0.6
45 48 0.98 35.2 0.23 10.3 76.4 70.7 1.6 1.0

Source: Report of Investigation No.18525-73-89, Progress Report

 

 

 

12.5.3  Gravity Concentration and Cyanide Leach of Gravity Concentrate

The gravity concentration test at grind size of P80=210 µm for the Enma MC sample achieved 5.2% gold recovery (Table 12.30).

 

 

 

Table 12.30:     Results of Gravity Concentration of the Enma MC Sample

Product Yield (%) Head Grade (g/t) Distribution (%)
Au Ag Au Ag
Gravity Concentrate 0.32 16.4 284 5.2 2.5
Tail 99.68 0.94 34.6 94.8 97.5
Head Calc 100.00 0.99 35.4 100.0 100.0
Head Assay   0.85 36.6    

Source: Report of Investigation No.18525-73-89, Progress Report

 

The WOCN in bottle roll tests for the gravity concentrate and tails (tail was reground to P80=75 µm) were carried out, and the results are listed in Table 12.31. The overall gold extraction was 71.5%, lower than the direct WOCN gold extraction of the Enma MC sample. The low gravity recovery and low overall gold extraction indicate that the gravity concentration is not suitable for the Enma ore.

 

 

 

Table 12.31:     Results of Gravity Concentration-Cyanidation of the Enma MC Sample

  

Description P80
(μm)
Time
(h)
Head Grade
(g/t)
Residue
Grade
(g/)
Extraction
(%)
Reagent
Consumption
(kg/t)
      Au Ag Au Ag Au Ag NaCN CaO
Gravity Concentrate 210 24 16.0 284 2.81 110 82.8 61.3 13.2 0.5
Gravity Tail 75 24 0.94 34.6 0.27 11.4 70.9 67.1 0.8 0.6
Overall Extraction             71.5 67.0 0.84 0.60

Source: Report of Investigation No.18525-73-89, Progress Report

 

12.5.4  Grindability

The grindability of the mineralized material from Camp, Los Cuyes and Enma deposits are summarized in Table 12.32. The BBWi is Bond Ball Mill Work Index. The higher value indicates the harder grindability.

 

  
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The A*b and SCSE are other indexes of grindability related to SAG mill grinding. The lower value of A*b and the higher value of the SCSE imply harder rock. Generally, the ore hardness of these three deposits is in a medium range.

 

 

Table 12.32: Summary of Ore Grindability

 

    Camp Los Cuyes  
Description Unit Low Medium High Low Medium High Enma
    Grade Grade Grade Grade Grade Grade  
F80 µm 1,652 1,661 1,615 2,190 2,174 2,167 1,967
P80 µm 119 120 119 118 118 118 119
Mesh Size µm 150 150 150 150 150 150 150
BBWi KWh/t 14.2 16.6 13.8 13.3 12.2 12.1 11.7
A         68.0 68.2 64.1 63.7
b         0.70 0.80 1.07 1.27
A*b         47.6 54.6 68.6 80.9
SCSE KWh/t       8.99 8.49 7.77 7.45
Specific Gravity (SG)         2.58 2.56 2.56 2.79
Abrasion Index (Ai) g       0.1049 0.0872 0.0720 0.0886

Source: multi metallurgical test reports

 

 

 

12.6  Conclusion and Recommendation

The valuable minerals of the Los Cuyes deposit (Los Cuyes West and Breccia Pipe) are gold, silver, sphalerite, galena and minor copper minerals. The responses to cyanidation and bulk flotation and bulk concentrate cyanidation are good for gold extraction, but silver extraction is poor for the bulk concentrate cyanidation. The process of bulk flotation and concentrate cyanidation achieved average gold recovery 89.7% and silver recovery 37.3%. The sequential selective flotation of the cyanide residue of bulk concentrate produced two valuable products: (1) a saleable zinc concentrate and (2) a lead concentrate containing a high-level silver. Detailed sequential selective flotation investigations on the cyanide leached bulk concentrate are recommended to produce the marketable lead concentrate and zinc concentrate.

The samples from the Camp deposit had a similar metallurgical behaviour to those samples from the Los Cuyes deposit. The gold, silver, lead and zinc respond well to the bulk flotation. The overall recovery of bulk flotation followed by concentrate cyanidation were 94% for gold and 50% for silver. Sequential selective flotations of the cyanide leached bulk concentrate likely produced a saleable lead/silver concentrate and a saleable zinc concentrate, but their recoveries were very low. Additionally, gravity concentration should be suitable for the Camp deposit considering the high-grade gold and silver in the gravity concentrate. Detailed sequential selective flotation investigations on the cyanide leached bulk concentrate are recommended to produce the marketable suitable lead concentrate and zinc concentrate.

 

  
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The gold cyanidation extraction from cyanide leach of the San Jose sample was significantly influenced by grind size. Fine grind size can result in higher gold and silver extractions. For the sample with 2.72 g/t gold and 26.7 g/t silver, under the conditions of grind of P90=75 µm, and cyanide leach retention time of 72 hours, the gold and silver extractions reached 91.6% and 82.0%, respectively. The San Jose sample contained a high sulfur content (pyrite). Flotation can enrich gold, silver, and sulfide minerals; however, the grind size used in the bulk flotation tests was too coarse (P80=500 µm), resulting in the low concentrate grades and recovery, and failing to produce marketable copper, lead, silver, or zinc concentrates. SRK recommends conducting the detailed bulk flotation tests, cyanide leach tests of the bulk flotation concentrate, and flotation tests of the cyanide leached bulk concentrate for silver, lead, and zinc. SRK anticipates that adopting a bulk flotation, cyanide leach of bulk concentrate and sequential selective flotation of the cyanide leached bulk concentrate will produce gold and silver bullion and also the marketable silver/lead and zinc concentrates.

The cyanide leach tests were conducted on an Enma ore sample which contained 0.97 g/t gold and 36.8 g/t silver. Under the operating conditions of grind size of P80=75 µm, and cyanide leach retention time of 24 hours, the gold and silver extractions reached 74.2% and 67.9%, respectively. Similar to the San Jose sample, the Enma sample had a high sulphur content (pyrite) and contained small amounts of copper, lead, and zinc. However, the flotation tests have not been conducted. It is recommended to conduct tests by following the flowsheet of the "bulk flotation-concentrate cyanidation-cyanidation tailings sequential selective flotation process" to reduce cyanide leach operating costs and to produce the marketable silver/lead and zinc concentrates.

The process of the whole ore cyanidation followed by flotation recovers extra gold and silver and probably produces a lead/silver concentrate and a zinc concentrate. The process cost is higher compared to the process of flotation and then concentrate cyanidation. Further metallurgical testwork is recommended to produce the marketable silver/lead concentrate and zinc concentrate.

  
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13  Mineral Resource Estimates

 

13.1  Introduction

 

The Condor Project comprises several deposits, however this section only focuses on the Camp, Los Cuyes, Soledad, and Enma deposits, which are included in the Mineral Resources estimation.

 

The Mineral Resource estimation work of the Condor Project was completed by SRK in 2025. The estimates are based on drilling samples information available up to 2023. The qualified person believes the drilling information is sufficiently reliable to interpret with confidence the boundaries for the deposits and that the assay data are sufficiently reliable to support Mineral Resource estimation. Mr. Mark Wanless (Pr.Sci.Nat, FGSSA), and Ms. Yanfang Zhao (MAusIMM), who are Principal Geologists from SRK have reviewed the drillhole database, geological model and the mineralisation domains generated by SVM, made some adjustments, performed the grade estimation, classified the Mineral Resources and prepared the Mineral Resource estimate using Datamine, Isatis.Neo and Leapfrog Geo and Edge.

 

The Qualified Person responsible for the Mineral Resources is Mr. Mark Wanless, who is a full-time employee of SRK Consulting (Canada) Inc.. (SRK Canada) and Registered with the South African Council for Natural Scientific Professionals as Pr.Sci.Nat, 400178/05, Fellow of the Geological Society of South Africa, Member of the Geostatistical Association of South Africa and a Member of the South African Institute for Mining and Metallurgy (SAIMM). Mr. Mark Wanless visited the Condor Project during June 19-20, 2024.

 

The Mineral Resources have been estimated in conformity with generally accepted CIM Estimation of Mineral Resources and Mineral Reserves Best Practices Guidelines (2019) and are reported in accordance with the Canadian Securities Administrators’ National Instrument 43-101.

 

Mineral Resources are not Mineral Reserves and do not have demonstrated economic viability. There is no certainty that all or any part of the Mineral Resource will be converted into Mineral Reserves.

 

This section describes the Mineral Resource estimation methodology and summarizes the key assumptions. The report author is not aware of any environmental, permitting, legal, title, taxation, socio- economic, marketing, political, or other relevant issues on the property. The Condor Project has all the required permits to conduct exploration on the property. The report author is not aware of any other significant factors and risks that may affect access, title, or the right or ability to perform on-going work programs on the property.

 

13.2  Estimation Procedures

 

The Mineral Resource evaluation methodology involved the following procedures:

 

Database compilation and verification

 

Geological interpretation for estimation domain

 

Data preparation (compositing and capping) for geostatistical analysis and variography

 

  
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Construction of the block model and grade interpolation

 

Mineral Resource classification

 

Model validation

 

Assessment of “reasonable prospects for eventual economic extraction” (“RPEEE”) and selection of appropriate AuEq cut-off values for potential open pit Mineral Resources for Soledad and Enma and underground for Camp and Los Cuyes

 

Preparation of the Mineral Resource statement

 

13.3  Resource Database

 

The data provided for the Condor Project include the database in CSV format, including the collar locations, downhole survey results, geologic information, SG data, assay, grade shell wireframes, lithology wireframes, QAQC data, block models in csv format, Topo file, etc., and Resource Database summary is presented in Table 13.1, and the drillhole locations are shown in Figure 9.1.

 

Table 13.1:     Resource Database Summary for the Condor Project

 

Deposit Number of
Drill
Holes
Total Length of Drilling
(m)

Total Length of
Samples in
Drilling
(m)

Number of samples
Camp 56 27,805 15,803 24,022
Los Cuyes 44 7,613 3,980 7,576
Soledad 117 37,513 23,607 36,263
Enma 126 20,725 12,888 20,419

 

Notes: The summary has been sourced by SRK from the database provided by Silvercorp.

 

13.4  Domain Modelling

 

13.4.1  Camp

 

The Camp deposit host rock types are a series of intrusive units. The structure and geology model were created by SVM using a combination of geological logs and surface mapping (see also Figure 6.4). The primary rock types included in the model are:

 

Rhyolite

 

Vent Rhyolitic welded tuff

 

Granodiorite

 

Andecite-Dacite

 

Diorite

 

Greenstone

 

  
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Rhyodacite

 

Figure 13.1 shows a plan view of the surface geology below the saprolite weathering. There is a northeast-striking fault (Piedras Blancas Fault) on the southeast side of the deposit that appears to cutoff or bound mineralization.

 

Figure 13.1:      Plan View of Condor Project Geology at Surface

 

 

Sources: SVM, 2024

 

  
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Figure 13.2:      Cross Sections of the Veins CA-01 to CA-06 looking Northwest

 

Source: SVM, 2024.

 

The gold, silver, copper, and zinc mineralization is not confined by rock type, but there are distinct grade zones that form relatively cohesive vein-like geometries that run parallel to the footwall of the rhyolite. A total of six major mineralization trends were defined and named CA-01 to CA-06 by SVM with a clear relation to Rhyolite intrusions through veins-stringers, dissemination, and contacts (Figure 13.2).

 

13.4.2  Los Cuyes

 

The Los Cuyes mineralization is not directly lithologically controlled but is focussed around the rhyolite lapilli tuff vent in a series of shear structures and a lower grade disseminated halo of mineralization. Two faults play an important role in the mineralization, the northeast striking Piedras Blancas fault, which cuts off the mineralization to the southeast, and the northeast striking Los Cuyes west (LCW) structure in the northwest near the contact between the rhyolite lapilli tuff and the granodiorite.

 

Within the rhyolite lapilli tuff twelve north west striking shears which dip steeply to the northeast have been modelled (Figure 13.3). These NW striking structures are cut off against the LCW structure which also hosts significant mineralization (Figure 13.4). A lower grade halo of disseminated mineralization has been modelled surrounding these higher-grade shears, also constrained by the bounding structures, and predominantly within the rhyolite lapilli tuff.

 

  
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Figure 13.3:      Plan View of the Los Cuyes Shear Hosted Mineralization Models

 

Sources: SVM, 2024

Notes: NW structures modelled using a 3 g/t gold cut off, the LCW mineralization is modelled above a 1 g/t gold cut off

 

  
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Figure 13.4:      Los Cuyes Vertical Cross Section looking North West

 

Sources: SVM, 2024

Notes: Only the 1 g/t LCW shell is used in the estimates

 

13.4.3  Soledad

 

Mineralization at Soledad is related to a felsic (rhyolitic) diatreme intrusion and associated breccias. No detailed lithological model was created for this area. The drilling database contains underlying geologic information, including lithology code designations derived from observations during core logging. Series of grade shell domains were interpreted for zones of continuous mineralization a set of intervals of Au g/t. Unlike Camp and Los Cuyes there is not yet a detailed geological interpretation for the Soledad deposit. A 0.2 g/t Au grade shell was chosen to constrain the mineralization, based on an assessment of several grade shell intervals, assessing the continuity of the mineralization (Figure 13.5). The lack of understanding of the geological controls on the mineralization will limit the estimation confidence.

 

  
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Figure 13.5:      Soledad Deposit 0.2 g/t Constraining Gold Grade Shell

 

Source: SVM, 2024

 

13.4.4  Enma

 

Gold and silver mineralization at Enma is hosted in a west-northwest-trending rhyolitic breccia that occurs at the contact between andesite lapilli tuffs and the Zamora batholith. No detailed lithological model was created for this area. The deposit has dimensions of 280 m west-northwest, is approximately 20-75 m wide, and has a vertical extent of 350 m.

 

Similar to Soledad, a grade shell based on 0.1g/t Au Cutoff and ISO of 0.5 was generated by SRK Leapfrog Geo and Edge, and used for the estimation domain of Enma (Figure 13.6).

 

  
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Figure 13.6:      Enma Deposit 0.1 g/t Constraining Gold Grade Shell

 

Sources: SVM data and SRK Model

 

13.5  Specific Gravity

 

Specific gravity (SG) data is only available for drill holes in the Los Cuyes and Camp areas. SG measurements are determined using the water immersion method (weight in air versus weight in water). SG measurements are undertaken on whole pieces of core spaced at approximately 10 m intervals down each drill hole.

 

Table 13.2 summarises the density data available per simplified logged lithology units within the Camp and Los Cuyes areas. These average densities are applied to the block model for each modelled lithology unit.

 

  
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Table 13.2:     Density Data for Camp and Los Cuyes per Lithology Code

 

  Los Cuyes Camp
Lithology Count Average SG Count Average SG
Dacite 329 2.74 275 2.69
Granodiorite 308 2.74 1,240 2.70
Greenstone 34 2.75 315 2.85
Rhyodacite 57 2.64 568 2.61
Rhyolite lapilli tuff 461 2.63 - -
Rhyolite North West 97 2.65 2 2.58
Rhyolite welded tuff 6 2.68 83 2.64

Sources: SVM

Notes: Some simplifications of lithology units have been undertaken by SRK for average density calculations

 

13.6  Compositing

 

Compositing the drill hole samples helps standardize the database for further statistical evaluation. This step ensures that the data has consistent support, and can aid in reducing the high variance that may be introduced through short samples.

 

13.6.1  Camp

 

Within the assay database of Camp, 45% of intervals are 1 m long, and 47% are 2 m long (Figure 13.7).

 

Figure 13.7:      Interval Length Histogram for the Camp Deposit

 

 

  
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A composite length of 2 m and minimum coverage of 50% was selected for Camp. Composites were created within the mineralization wireframe domains beginning at the upper contacts. The intersection thickness encountered by any given drill hole, however, is not an even multiple of the composite length. if the remaining length was less than 1 m, the composite was distributed equally. The elimination of the small composites did not affect the overall integrity of the composited database. The compositing of samples before and after does not affect the overall distribution of the samples

(Figure 13.8:).

 

Figure 13.8:      Gold Grades Before and After Compositing (Camp)

 

 

The average grades of composite datasets of each domain are shown in Table 13.3.

 

Table 13.3:     Camp Composites For Each Domain

 

Domain Count Ag g/t Au g/t Cu % Pb % Zn % As ppm S %
CA-01 101 22.53 2.31 0.02 0.08 0.76 163.96 2.73
CA-02 77 7.00 1.18 0.01 0.04 0.44 38.65 1.65
CA-03 1,266 13.06 1.54 0.02 0.05 0.53 113.19 2.96
CA-04 188 13.42 1.38 0.02 0.05 0.60 116.50 3.04
CA-05 198 14.94 1.40 0.02 0.07 0.52 96.93 2.60
CA-06 159 9.41 0.70 0.01 0.02 0.17 43.66 1.24

 

  
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13.6.2  Los Cuyes

 

The Los Cuyes domains can be separated into the shear style domains and the surrounding disseminated halo domain. The consideration of the appropriate composite length is different for each of these since the dimensions of the domains are significantly different. For the shear domains the dimensions are similar to that discussed for camp, while for the disseminated halo the mineralization dimensions do not impact the choice of composite length. As with Camp the sample length distribution at Los Cuyes is bimodal with common values of 1 m (47% of samples) and 2 m 47% of samples with a minor population of variable samples as shown in Figure 13.9.

 

Figure 13.9:      Interval Length Histogram of Los Cuyes

 

 

SRK undertook a composite optimisation considering arrange of composite lengths for each shear and halo domain. For the shear domains composite lengths of longer than 2 m resulted in a number of composites shorter than the target length due to the dimensions of the mineralized domain, and did not materially reduce the coefficient of variation. For the shear domains a composite length of 2 m was selected. For the halo domain a length of 3 m was selected as the coefficient of variation stabilised for composite lengths above this value. The compositing did not materially affect the average grades as is illustrated in Table 13.4 which shows the sample and composite Au g/t values, along with the value of the remaining residual samples at the margins of the domains.

 

  
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Table 13.4:     Los Cuyes Domain Sample and Composite Au g/t Grades with Residual Sample Grades

 

Domain Sample Composite Residual
LCW_1gpt 3.14 3.14 11.04
NW01_3gpt 2.81 2.81 1.79
NW9_3gpt 5.89 5.89 9.51
NW7_3gpt 3.20 3.20 3.06
NW3_3gpt 11.30 11.30 3.92
NW2_3gpt 2.83 2.82 4.05
NW5_3gpt 8.52 8.52 4.53
NW10_3gpt 4.09 4.09 2.28
NW8_3gpt 5.17 5.17 3.12
NW6_3gpt 6.42 6.42 27.90
NW13_3gpt 6.61 6.61 7.54
NW11_3gpt 4.04 4.04 6.47
NW15_3gpt 6.73 6.74 2.93
Halo 0.65 0.65 0.62

 

As the halo domain residual value is not materially different to the mean for the domain, the residual sample was ignored. For the shear domains however the residual value can be significantly different to the composite values. Therefore for the shear domains the residual composite was merged with the previous composite to ensure the grade is not biased.

 

The declustered average grades of the 2 m and 3 m composite datasets are shown in Table 13.5.

 

Table 13.5:     Los Cuyes Deculstered Average Values for Estimated Variables in Each Domain

 

Domain Count Ag g/t Au g/t Cu % Pb % Zn % Count1 As ppm S %
LCW 246 27.7 5.43 0.04 0.24 0.78 158 521 4.46
NW1 245 36.6 2.76 0.06 0.12 0.49 66 2,670 4.41
NW9 66 18.2 8.93 0.05 0.06 0.38 36 51 3.13
NW7 40 23.0 3.25 0.04 0.08 0.31 21 89 3.37
NW3 28 43.4 10.42 0.1 0.21 0.97 12 1,152 6.85
NW2 71 14.8 5.20 0.03 0.07 0.78 41 41 2.01
NW5 9 63.6 7.68 0.06 0.11 1.1 3 1,692 6.3
NW10 5 30.3 3.89 0.01 0.51 0.54 2 91 0.8
NW8 12 28.5 5.37 0.02 0.67 0.47 6 107 2.73
NW6 3 30.8 10.00 0.01 0.11 0.36 3 181 6.52
NW13 7 55.7 6.24 0.04 0.07 1.22 0 - -
NW11 13 19.9 5.26 0.02 0.05 0.35 0 - -
NW15 4 35.7 5.68 0.03 0.15 0.85 0 - -
Halo2 3,459 6.0 0.69 0.02 0.02 0.24 842 33 2.14

 

1 As and S are not assayed for all drillholes resulting in different numbers of composites

2 Composite length of 3 m

 

  
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13.6.3  Soledad

 

The approach to compositing at Soledad is similar to that undertaken at Los Cuyes for the disseminated halo domain, since the domain definition using a grade shell has defined a similar kind of domain. The distribution of sample length is similarly grouped around 1 m (44%) and 2 m (50%) samples (see Figure 13.10).

 

Figure 13.10:      Interval Length Histogram of Soledad

 

 

A composite length of 2 m was selected for Soledad based on the composite optimisation results. As can be seen in Table 13.6, the compositing did not impact the mean grades; however, in this instance the grades of the residual samples are quite different, and therefore the residual samples are merged with the previous composite.

 

  
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Table 13.6:     Soledad Sample and Composite Grades with Residual Sample Grades

 

Variable Sample Composite Residual
Ag_ppm 6.96 6.97 2.5
As_ppm 43.99 43.99 71.2
Au_ppm 0.96 0.96 0.19
Cu_pct 0.02 0.02 0.01
Pb_pct 0.05 0.05 0.02
S_pct 2.34 2.34 2.06
Zn_pct 0.51 0.51 0.19

 

The declustered average grades of the 2 m composite data are shown in Table 13.7.

 

Table 13.7: Soledad Declustered Average Values for Estimated Variables

 

Domain Count Ag g/t Au g/t Cu % Pb % Zn % Count1 As ppm S %
All 5276 6.7 0.59 0.02 0.05 0.38 349 45 2.18

 

3 As and S are not assayed for all drillholes resulting in different numbers of composites

 

13.6.4  Enma

 

Within the assay database, the average sample length is 1.9 m, about 11% of samples are 1 m long, and 83% are exactly 2 m long (Figure 13.11). A composite length of 2 m and minimum coverage of 50% was selected for Enma. The intersection thickness encountered by any given drill hole, however, is not an even multiple of the composite length. if the remaining length was less than 1 m, the composite was distributed equally. The compositing of samples before and after does not affect the overall distribution of the samples (Figure 13.12).

 

  
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Figure 13.11:      Interval Length Histogram for Enma

 

 

Figure 13.12:      Before and After Compositing (Enma)

 

 

The average grades of the 2 m composite data of Enma are shown in Table 13.8.

 

  
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Table 13.8:     Enma Average Values for Estimated Varaibles

 

Domain Count Ag g/t Au g/t Cu Pb Zn % Count1 As ppm S
Enma 1,615 15.39 1.07 0.02   0.08  0.31 44 188.58 5.36 

1  As and S are not assayed for all drillholes resulting in different numbers of composites

 

 

13.7  Evaluation of Outliers

13.7.1  Camp

Assay capping for the variables was applied after compositing for the mineralized domains of Camp. Capping values were selected based on the visual assessment of the variable histogram. No distance-based capping was determined to be required at Camp. The capping values and the impact of applying outlier capping are presented in Table 13.9.

 

Table 13.9:     Summary of Grade Capping Applied to Camp

 

Domain Variable Mean Cap Value Capped Composite No CappedMetal loss
Group       mean Count   %
Camp Au g/t 1.47 32 1.47 1,816 3 0.25
  Ag g/t 13.29 330 13.11 1,816 1 1.41
  Pb % 0.05 1 0.05 1,816 12 7.43
  Zn % 0.52 5.9 0.51 1,816 8 1.19
  Cu % 0.02 - - 1,816 - -
  As ppm 105.72 1800 94.94 1,816 13 10.19
  S % 2.73 - - 1,816 - -

 

13.7.2  Los Cuyes

For each of the variables to be estimated the need for treatment of outlier values was assessed. For deleterious variables such as Arsenic, the assessment and treatment of outlier values can be different to that of the economically valuable variables. The estimation domains are grouped according to the mineralization style for this exercise, the LCW shear, halo, and north west striking shears (NW shears). An initial assessment of each of the NW shears individually revealed that the distributions were materially similar where there is sufficient data to reasonably assess these.

The assessment considers the variable histogram, normal probability plot, and charts where samples are sorted from low to high and the impact of adding samples one by one to the dataset from low to high on the mean, standard deviation and coefficient of variation. The capping values and the impact of applying outlier capping is summarised in Table 13.10.

 

  
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Table 13.10: Summary of Grade Capping Applied to Los Cuyes

 

Domain

Group

Variable Mean Cap
Value

Capped

mean

Composite

Count

No Capped

Metal loss

%

LCW Au g/t 3.37 40 3.01 246 2 10.62
  Ag g/t 15.21 130 14.46 246 4 4.93
  Pb % 0.09 1 0.08 246 5 8.99
  Zn % 0.52 4 0.50 246 4 4.35
  Cu % 0.04 - - 246 - -
  As ppm 195.5 - - 156 - -
  S % 3.89 - - 156 - -
NW Au g/t 4.01 40 3.83 503 5 4.57
  Ag g/t 25.23 300 24.06 503 4 4.26
  Pb % 0.1 1.5 0.1 490 4 2.74
  Zn % 0.71 6 0.69 503 5 3.69
  Cu % 0.06 - - 490 - -
  As ppm 211.4 - - 190 - -
  S % 3.58 - - 190 - -
Halo Au g/t 0.7 10 0.69 3,459 3 1.68
  Ag g/t 6.23 100 6.03 3,459 8 0.23
  Pb % 0.02 -   3,443    
  Zn % 0.24 2 0.24 3,443 8 0.51
  Cu % 0.02 - - 3,443 - - 
  As ppm 33.08 - - 842 - - 
  S % 2.14 - - 842 -

Notes: Distance capping is also applied in some instances

 

For some domains, there remain isolated high values that can have a significant impact on the estimates. In these situations, and additional distance-based capping is applied. Where a composite is above the selected threshold and is also beyond a selected distance from the block, this secondary capping is applied. The secondary capping is not applied when the composite is closer to the estimating block than the selected distance. For the domains NW2, NW9 and LCW for gold a distance- based capping was also applied of 20 g/t, 20 g/t and 14 g/t respectively. The distance beyond which this capping is applied is 20 m in the plane of mineralization in the case of the NW group of domains, and 50 m for the LCW domain. For he LCW domain for arsenic only a distance-based capping at 1000 ppm with a distance of 20 m was applied.

 

  
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13.7.3  Soledad

The assessment of outliers used for Los Cuyes was also applied for Soledad. Only three variables had distributions which required capping at Soledad, and the capping parameters and effect are summarised in in Table 13.11.

 

Table 13.11: Summary of Grade Capping Applied to Soledad

 

Domain
Group
Variable Mean Cap Value Capped mean

Composite

Count

No Capped

Metal loss

%

All Au g/t 0.96 -   5,276    
  Ag g/t 6.92 60 6.79 5,276 26 1.95
  Pb % 0.05 -   4,711    
  Zn % 0.5 -   5,258    
  Cu % 0.02 0.5 0.02 4,711 10 1.7
  As ppm 44.06 -   349    
  S % 2.34 2.4 0.5 349 2 0.04

No distance-based capping was determined to be required at Soledad. In most instances, the high value composites which might otherwise have required distance-based capping are in densely sampled areas, where there is sufficient data to limit the range of influence of these high value composites.

 

13.7.4  Enma

Assay capping for the variables was applied after compositing for the mineralized domains of Enma. Capping values were selected based on the visual assessment of the variable histogram, and the capping parameters and effect are summarised in in Table 13.12.

 

Table 13.12: Summary of Grade Capping Applied to Enma

 

Domain
Group
Variable Mean Cap Value Capped
mean

Composite

Count

No Capped

Metal loss

%

Enma Au g/t 1.47 32 1.47 1,816 3 0.25
  Ag g/t 13.29 330 13.11 1,816 1 1.41
  Pb % 0.05 1 0.05 1,816 12 7.43
  Zn % 0.52 5.9 0.51 1,816 8 1.19
  Cu % 0.02 - - 1,816 - -
  As ppm 105.72 1800 94.94 1,816 13 10.19
  S % 2.73 - - 1,816 - -

No distance-based capping was determined to be required at Enma. In most instances, the high value composites which might otherwise have required distance-based capping are in densely sampled areas, where there is sufficient data to limit the range of influence of these high value composites.

 

  
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13.8  Spatial Continuity Assessment

For each deposit and domain, SRK undertook an assessment of the continuity of each variable, considering the understanding of the geological controls on the mineralization, using tools such as the semi-variogram map, directional semi-variograms, swath plots, histograms and correlation plots to understand the relationships between variables, and their spatial continuity.

 

13.8.1 Camp

For many of the Camp domains the assessment of the experimental semi-variograms did not show any interpretable structure in the data. This is potentially due to relatively small numbers of composites and relatively widely spaced intersections. For this group only domain CA-03 showed a sufficiently robust structure to allow modelling of a semi-variogram for gold, silver, copper, lead and zinc. The semi- variograms are modelled on normal score transforms of the variables, and the spherical structured modelled semi-variogram is back transformed into real space. The real space back transformed semi- variogram models are shown in Table 13.13 and examples of the semi-variogram models for gold and silver for the CA-03 domain are shown in Figure 13.13.

 

Table 13.13:    Camp Semi-Variogram Model Parameters

 

      Dip     Structure 1 Structure 2

 

Domain

 

Variable

Dip
(°)
Azimuth
(°)
Pitch
(°)

 

Nugget

 

Sill

 

Major

 

Int

 

Minor

 

Sill

 

Major

 

Int

 

Minor

CA-03 Ag_ppm 84 49 18.37 174.3 349 26.7 25.4 5.9 39.9 147.7 122.8 12.1
  Au_ppm 84 45 18.37 3.21 5.39 67.1 60.7 13.7 1.42 166.0 158.0 28.9
  Cu_pct 84 45 18.37 0.0003 0.0004 92 81.3 6.8 0.0002 168.3 138.8 21.3
  Pb_pct 84 45 18.37 0.0022 0.008 71.6 67.7 11.6 0.0021 165.2 155 32.8
  Zn_pct 84 45 18.37 0.1088 0.3751 81.8 73.2 13 0.0646 152.4 142.2 26.5

 

  
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Figure 13.13: Camp CA-03 Domain Gaussian Space Semi-Variogram Models

 

 

Notes: CA-03 domain semi-variograms for gold (top) and silver (bottom).

 

13.8.2  Los Cuyes

For many of the NW domains the assessment of the experimental semi-variograms did not show any interpretable structure in the data. This is potentially due to relatively small numbers of composites and relatively widely spaced intersections. For this group only domain NW9 showed a sufficiently robust structure to allow modelling of a semi-variogram for gold, silver, copper, lead and zinc. Similarly for domain LCW the same variables have reasonably robust structures which allowed modelling of semi- variograms for the same variables. The semi-variograms are modelled on normal score transforms of the variables, and the spherical structured modelled semi-variogram is back transformed into real space. The real space back transformed semi-variogram models are shown in Table 13.14 and examples of the gaussian space semi-variogram models for gold and silver for the LCW domain are shown in Figure 13.14. The models are isotropic in the plane of mineralization.

 

  
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Table 13.14: Los Cuyes Semi-variogram Model Parameters

 

Domain

Variable

Dip (°)

Dip

 

Azimuth
(°)

Pitch )

Nugget

Sill

Structure 1

 

Major

Int

Minor

Sill

Structure 2

 

Major

Int

Minor

LCW Ag_ppm 70 150 0 429.1 800.8 180.3 180.3 102.6 261.6 522.1 522.1 49.5
  Au_ppm 70 150 0 66.6 80.1 398.1 398.1 687.4        
  Cu_pct 70 150 0 0.0005 0.0014 121.6 121.6 8.5        
  Pb_pct 70 150 0 0.0463 0.1256 171.9 171.9 25.4        
  Zn_pct 70 150 0 0.0930 0.4908 15.6 15.6 13.8 0.4 205.2 205.2 37.2
NW9 Ag_ppm 80 20 0 147.5 306.3 57.0 57.0 16.2        
  Au_ppm 80 20 0 149.4 49.8 61.8 61.8 17.0        
  Cu_pct 80 20 0 0.0008 0.0016 57.3 57.3 16.2        
  Pb_pct 70 30 320 0.0057 0.0015 42.3 33.6 27.5 0.0041 109.3 107.5 3.4
  Zn_pct 80 20 0 0.0867 0.0228 14.9 14.9 5.0 0.2044 52.4 52.4 16.9

 

Notes:   Back-transformed models

 

  
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Figure 13.14: Los Cuyes LCW Domain Gaussian Space Semi-variogram Models

 

Notes: LCW domain semi-variograms for gold (top) and silver (bottom)

 

13.8.3  Soledad

At Soledad within the grade shell the continuity assessment did not show any discernible anisotropy for the variables for which semi-variograms could be modelled. Only omni-directional experimental data showed sufficiently robust structures for semi-variogram modelling in this domain. For arsenic and sulphur there is insufficient data to model semi-variograms. The real space back transformed semi- variogram models are shown in Table 13.15 and examples of the gaussian space semi-variogram models for silver, gold, lead and zinc are shown in Figure 13.15.

 

  
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Table 13.15: Soledad semi-variogram model parameters

  

      Structure 1 Structure 2
Domain Variable Nugget Sill Range Sill Range
LCW Ag_ppm 51.5    17.3 27.1    41.0 95.6
  Au_ppm 0.965 0.282 39.0    
  Cu_pct 0.0014 0.0018 40.6 0.0012 231.0
  Pb_pct 0.0041 0.0016 85.1 0.0025 262.8
  Zn_pct 0.0381 0.0340 23.1 0.0494 108.8

 

Notes: Back-transformed models

 

The structure in the experimental semi-variogram for gold is relatively poorly defined – the shape and ranges of continuity of the other variables were considered in the modelling of the gold semi-variogram.

 

Figure 13.15: Soledad Gaussian Space Semi-variogram Models

 

 

Notes: Gaussian space semi-variograms for silver (top left), gold (top right), lead (bottom left) and zinc (bottom right)

 

  
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13.8.4  Enma

The semi-variogram structure and examples of the models of Enma are shown in Table 13.16 and Figure 13.16.

 

Table 13.16: Enma Semi-Variogram Model Parameters

 

            Structure 1 Structure 2

 

 

Domain

 

 

Variable

 

Dip
(°)

 

Dip Azimuth

(°)

 

Pitch
(°)

 

 

Nugget

 

 

Sill

 

 

Major

 

 

Int

 

 

Minor

 

 

Sill

 

 

Major

 

 

Int

 

 

Minor

Enma Ag_ppm 76 345 128 0.17 0.52 30 26.5 5.2 0.31 89.5 84.1 22.6
  Au_ppm 76 345 128 0.16 0.4 14 12 10.6 0.44 80.1 57.8 18.1
  Cu_pct 76 345 128 0.05 0.95 52.8 43.5 7.9        
  Pb_pct 76 345 128 0.35 0.33 31.3 20.4 2.4 0.32 99.3 40.7 39.5
  Zn_pct 76 345 128 0.16 0.42 32.5 28.6 2.4 0.68 61.3 50.8 10.3

 

 

 

 

Figure 13.16: Enma Semi-Variogram Models

 

Notes: semi-variograms for gold (top) and silver (bottom)

 

  
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13.9  Block Model and Grade Estimation

The models with different block model origins, dimensions and rotations for each deposit were generated by SRK in the first quarter of 2025. A block model parameter summary is presented in Table 13.17 for each deposit. The choice of block size and size of the sub cells is dictated by the drill hole spacing, dimensions of the mineralization domains, with consideration given to possible mining methods and potential smallest mining unit dimensions.

 

Table 13.17:     Block Model Summary
Deposit Axis Camp Los Cuyes Soledad Enma
Rotation Z No rotation No rotation No rotation No rotation
Origin X 768,260 768,660 768,990 770,220
  Y 9,551,790 9,552,330 9,551,170 9,55,1820
  Z 400 600 975 1,200
Extent X 769,150 769,690 769,890 770,670
  Y 9,552,740 9,553,070 9,552,050 9,552,170
  Z 1,600 1,770 1,805 1,920
Block Size (m) X 10 10 20 10
  Y 10 10 20 10
  Z 10 10 10 10
Min Sub-cell X 1 0.25 0.5 2
  Y 1 0.25 0.5 2
  Z 1 0.25 0.5 2

 

13.9.1  Camp

Ordinary Kriging (OK) was used for grade estimation of CA-03, For the remaining domains the Au and Ag estimates were interpolated using inverse distance cubic (ID3) while Cu Pb Zn S and As estimates were interpolated using inverse distance squared (ID2). The search parameters were selected based on a kriging neighbourhood analysis for the domains with semi-variograms. For the domains estimated using ID2 and ID3 the optimised parameters selected for the kriged domains were used as the basis for selecting the search ranges and sample selection criteria. Variable orientation based on the footwall of the veins was applied to align to the mineralization model wireframe.

Generally, a three-pass search strategy is applied (Table 13.18), with the first search radius, where practical, selected to approximate the first structure in the semi-variogram or for single structure models to a range which approximated two thirds of the full semi-variogram range. The second search is generally aimed to align with the full semi-variogram range, while a third search is added to populate estimates for all blocks in the domain. The structure of the gold semi-variogram model is the primary determinant for the search ranges, however the structure of the other variables is also considered.

 

  
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The shorter first pass is used with the aim of generating high confidence local estimates where there is sufficient closely spaced data with a low degree of smoothing.

 

Table 13.18: Camp Search Parameters

 

Domain Dip Dip
Azimuth
Pitch Major Int Minor No
Sectors
Min
Samples
Max
Samples
CA-01 Pass 1 84 49 122 60 60 15 1 4 16
CA-01 Pass 2 84 49 122 120 120 30 1 3 16
CA-01 Pass 3 84 49 122 180 180 40 1 1 16
CA-02 Pass 1 89 45 90 60 60 20 1 4 16
CA-02 Pass 2 89 45 90 120 120 40 1 3 16
CA-02 Pass 3 89 45 90 180 180 60 1 1 16
CA-03 Pass 1 84 48 7 60 60 20 1 5 16
CA-03 Pass 2 84 48 7 120 120 40 1 3 36
CA-03 Pass 3 84 48 7 180 180 60 1 1 16
CA-04 Pass 1 81 41 90 60 60 15 1 4 16
CA-04 Pass 2 81 41 90 120 120 30 1 3 16
CA-04 Pass 3 81 41 90 180 180 40 1 1 16
CA-05 Pass 1 79 36 90 60 60 15 1 4 16
CA-05 Pass 2 79 36 90 120 120 30 1 3 16
CA-05 Pass 3 79 36 90 180 180 40 1 1 16
CA-06 Pass 1 84 46 90 60 60 15 1 4 16
CA-06 Pass 2 84 46 90 120 120 30 1 3 16
CA-06 Pass 3 84 46 90 180 180 40 1 1 16
Notes:Search parameters listed applied to Au, Ag, Cu, Pb, Zn, S and As estimates
   
  Larger search ranges are applied after the third search pass where needed to inform all blocks in the domain
Local search orientations are applied based on the domain wireframe orientation

  
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13.9.2  Los Cuyes

In the domains for which semi-variograms were modelled Ordinary Kriging (OK) was used for grade estimation. For the remaining domains the estimates were interpolated using inverse distance squared (ID2). The search parameters were selected based on a kriging neighbourhood analysis for the domains with semi-variograms. For the domains estimated using ID2 the optimised parameters selected for the kriged domains were used as the basis for selecting the search ranges and sample selection criteria. The orientation of the search parameters is modified for each block to align to the mineralization model wireframe.

Generally, a three-pass search strategy is applied (Table 13.19), with the first search radius, where practical, selected to approximate the first structure in the semi-variogram or for single structure models to a range which approximated two thirds of the full semi-variogram range. The second search is generally aimed to align with the full semi-variogram range, while a third search is added to populate estimates for all blocks in the domain. The structure of the gold semi-variogram model is the primary determinant for the search ranges, however the structure of the other variables is also considered. The shorter first pass is used with the aim of generating high confidence local estimates where there is sufficient closely spaced data with a low degree of smoothing.

 

  
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Table 13.19: Los Cuyes Search Parameters

 

Domain   Dip Dip azimuth Pitch Major Int Minor No sectors Min Max Per
Sector
Max Per
Drillhole
Min
Drillholes
LCW Pass 1 70 150 0 60 60 30 4 4 5 5 2
LCW Pass 2 70 150 0 100 100 40 4 4 4 5 2
LCW Pass 3 70 150 0 265 265 60 4 3 5 5 2
NW9 Pass 1 80 20 0 60 60 25 1 5 16 - -
NW9 Pass 2 80 20 0 120 120 38 1 4 16 - -
NW9 Pass 3 80 20 0 120 180 63 1 3 16 - -
NW ID2 Pass 1 80 30 90 60 60 25 1 5 14 - 2
NW ID2 Pass 2 80 30 90 120 120 25 1 1 16 - 2
NW ID2 Pass 3 80 30 90 180 180 25 1 1 16 - 2
Halo Pass 1 40 220 0 50 50 15 4 6 5 - 2
Halo Pass 2 40 220 0 100 100 25 4 5 4 - 2
Halo Pass 3 40 220 0 200 200 40 4 4 4 - 2

 

Notes: Search parameters listed applied to Au, Ag, Cu, Pb, and Zn. For all shear domains the NW ID2 parameters are applied for As and S estimates
   
  Larger search ranges are applied after the third search pass where needed to inform all blocks in the domain
   
  Local search orientations are applied based on the domain wireframe orientation

 

  
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13.9.3  Soledad

The Soledad variables were estimated using OK except for arsenic and sulphur which were interpolated using ID2. The search parameters were selected based on a kriging neighbourhood analysis for the variables with semi-variograms. For the variables estimated using ID2 the optimised parameters selected for the kriged domains were used as the basis for selecting the search ranges and sample selection criteria, however these are modified as not all drill holes have assays for these two variables.

A three-pass search strategy was employed for each variable, with the first search range being the full semi-variogram range for the precious metals, but a fraction of the full variogram range for the base metals. The search parameters applied are summarised in Table 13.20.

 

Table 13.20:     Soledad Search Parameters

 

Search Variable Range Min Max per sector No Sectors
Pass 1 Ag ppm 100 5 18 1
  Au ppm 100 5 26 1
  Cu% 100 5 16 1
  Pb% 100 5 16 1
  Zn% 100 5 5 4
  As ppm 100 5 22 1
  S% 100 5 14 1
Pass 2 Ag ppm 150 5 18 1
  Au ppm 150 5 24 1
  Cu% 150 5 14 1
  Pb% 150 5 14 1
  Zn% 150 5 12 1
  As ppm 200 4 16 1
  S% 200 4 16 1
Pass 3 Ag ppm 300 3 16 1
  Au ppm 300 3 20 1
  Cu% 300 3 12 1
  Pb% 300 3 12 1
  Zn% 300 3 10 1
  As ppm 300 2 16 1
  S% 300 2 16 1

Notes: In the first search pass for gold, silver, copper, lead and zinc a minimum of two holes is required, and an optimum of four composites per hole is applied

 

13.9.4  Enma

The Enma variables were estimated using OK for Au, Ag Cu, Pb and Zn. The search parameters were selected based on a kriging neighbourhood analysis for the variables with semi-variograms. Due to relatively small numbers of composites the experimental semi-variogram for S and As was not defined, and S and As were interpolated using ID2.

 

  
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A three-pass search strategy was employed for each variable. The search parameters applied are summarised in Table 13.21.

 

Table 13.21: Enma Search Parameters

 

Search Variable Range Dip Dip azimuth Pitch Min Samples Max per sector No Sectors
Pass 1 Ag ppm 30 76 345 124 5 10 3
  Au ppm 30 77 345 128 5 10 3
  Cu% 30 77 345 128 5 10 3
  Pb% 30 77 345 128 5 10 3
  Zn% 30 77 345 128 5 10 3
  As ppm 30 77 345 128 5 10 3
  S% 30 77 345 128 5 10 3
Pass 2 Ag ppm 50 76 345 124 4 10 3
  Au ppm 50 77 345 128 4 10 3
  Cu% 50 77 345 128 4 10 3
  Pb% 50 77 345 128 4 10 3
  Zn% 50 77 345 128 4 10 3
  As ppm 50 77 345 128 4 10 3
  S% 50 77 345 128 4 10 3
Pass 3 Ag ppm 100 76 345 124 2 10 1
  Au ppm 100 77 345 128 2 10 1
  Cu% 100 77 345 128 2 10 1
  Pb% 100 77 345 128 2 10 1
  Zn% 100 77 345 128 2 10 1
  As ppm 100 77 345 128 2 10 1
  S% 100 77 345 128 2 10 1

 

  
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13.10  Model Validation

Model validation is a common approach for determining whether grade estimation has performed as expected. An acceptable or preferred validation result does not necessarily imply that the model is correct or derived from the right estimation approach. It suggests only that the model is a reasonable representation of the resource data used and of the estimation method applied. Other issues such as the relationship between the model-selectivity assumptions and mining practices are equally important when determining the appropriateness of the Mineral Resource estimate.

For each deposit SRK undertook a range of validations including visual validations of the estimates and informing data, comparisons of the mean values of the data and estimates per estimation domain and swath plots to assess the reproduction of the spatial variability of the variables. Selected examples of these are presented for each deposit to illustrate the conclusions drawn from analysing the validations.

 

13.10.1   Camp

For the domains of Camp, the validations are affected by irregularly spaced and relatively small number of intersections, changes in the thickness of the modelled domains, isolated high values, capping, as well as the higher variance associated with higher grades. The mean grades of the composites and the mean of the classified Mineral Resources are shown in Table 13.22.

 

Table 13.22: Camp per Domain Comparison Between Composites and Estimates

 

  Au g/t Ag g/t Pb % Zn % Cu %
Domain Comp Est Comp Est Comp Est Comp Est Comp Est
CA-01 2.33 2.33 15.83 16.90 0.05 0.05 0.69 0.70 0.02 0.02
CA-02 1.26 1.36 7.58 7.73 0.04 0.04 0.50 0.58 0.01 0.01
CA-03 1.54 1.70 12.43 13.53 0.05 0.05 0.53 0.60 0.02 0.02
CA-04 1.41 1.32 13.54 13.68 0.05 0.05 0.61 0.54 0.02 0.02
CA-05 1.43 1.29 13.14 12.06 0.07 0.05 0.52 0.49 0.02 0.02
CA-06 0.73 0.59 9.52 8.13 0.02 0.02 0.17 0.19 0.01 0.01

 

  
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Figure 13.17: Vertical Section of The Camp Ca-03 Domain Gold Distribution Looking North

 

 

Comparisons between the global mean for the composites and block models for each vein shows some differences, which are a result of the heterogenous nature of the mineralization, and the spatial grade distribution and variable intersection spacing. The example of gold distribution of CA-03, which is the biggest vein of Camp was shown in Figure 13.20.

The swath plots of combined domain of Camp were shown in Figure 13.18 and Figure 13.19, which shows the block models and composites match reasonably well in all orthogonal directions in the central area of the domain but with poorer correlation in the area with fewer samples . However, these areas have been reasonably classified as Inferred or not classified as Mineral Resources and additional exploration will be required to support declaration of a Mineral Resource in these areas.

 

  
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Figure 13.18: Camp X Swath Plots for Gold, Silver, Lead and Zinc

 

 

 

Figure 13.19: Camp Z Swath Plots for Gold, Silver, Lead and Zinc

 

 

 

  
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13.10.2  Los Cuyes

The number of informing composites in the halo domain is significantly more than is available for any of the shear hosted domains. For the tabular shear hosted domains, the validations are affected by irregularly spaced and relatively small number of intersections, changes in the thickness of the modelled domains, isolated high values, capping, as well as the higher variance associated with higher grades. The comparison between estimates and composites in these domains shows quite variable correlations. The declustered mean grades of the composites and the mean of the classified Mineral Resources are shown in Table 13.23.

Some domains (such as NW6, NW7) show very close correlation between the composites and estimate for all variables, while others (such as NW1, NW2, NW15) show good correlations for some variables and weaker matching for others. In the LCW domain the estimates appear to underestimate the grades when compared to the composites. However, when considering the spatial grade distribution and variable intersection spacing, the reason for this is apparent as is illustrated in Figure 13.20. The widely spaced but very high-grade intersections on the western margin of the deposit are intentionally affected by capping to reduce the risk of over estimation, but these will have an impact on the mean grades. The central core of the domain is thicker than the margins and is also lower grade.

 

Table 13.23: Los Cuyes Per Domain Comparison Between Composites and Estimates

 

  Au g/t Ag g/t Pb % Zn %
Domain Comp Est Comp Est Comp Est Comp Est
LCW 4.95 2.81 26.17 16.61 0.208 0.100 0.75 0.55
NW1 2.77 2.67 36.33 27.23 0.111 0.095 0.49 0.68
NW2 4.32 3.27 14.37 10.62 0.068 0.065 0.78 0.87
NW3 10.10 10.28 40.41 44.56 0.215 0.199 0.84 1.01
NW5 7.69 9.90 63.61 79.38 0.108 0.159 1.10 1.51
NW6 10.00 10.10 30.78 30.85 0.110 0.110 0.36 0.37
NW7 3.25 3.21 23.03 23.01 0.076 0.060 0.31 0.25
NW8 5.37 4.18 28.49 28.57 0.325 0.664 0.47 0.53
NW9 7.22 4.47 18.15 13.40 0.056 0.040 0.38 0.49
NW10 3.89 4.12 30.32 33.43 0.315 0.576 0.55 0.59
NW11 5.26 4.02 19.92 18.31 0.050 0.065 0.35 0.28
NW13 6.24 6.71 39.63 57.81 0.073 0.108 1.22 0.70
NW15 5.69 5.40 35.71 33.42 0.153 0.185 0.85 0.75
Halo 0.69 0.75 5.40 5.71 0.020 0.024 0.23 0.21

Some domains (such as NW6, NW7) show very close correlation between the composites and estimate for all variables, while others (such as NW1, NW2, NW15) show good correlations for some variables and weaker matching for others.

In the LCW domain the estimates appear to underestimate the grades when compared to the composites. However, when considering the spatial grade distribution and variable intersection spacing, the reason for this is apparent as is illustrated in Figure 13.20. The widely spaced but very high-grade intersections on the western margin of the deposit are intentionally affected by capping to reduce the risk of over estimation, but these will have an impact on the mean grades. The central core of the domain is thicker than the margins and is also lower grade. This can also be observed in the swath plots in Figure 13.21

 

  
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which highlights the higher tonnage and lower grades in the central core and elevated grades on the western margin informed by relatively few composites. Composite mean values are shown in blue (Au g/t) and estimated values in red (Au g/t*).

In aggregate, the visual validations indicate that there is a relatively good reproduction of the composite grades however the grade distribution is quite variable, and additional exploration will be required to support detailed mine planning.

 

Figure 13.20: Vertical Section of the Los Cuyes LCW Domain Gold Distribution Looking North

 

 

 

  
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Figure 13.21:      Los Cuyes X Swath Plots for Gold, Silver and Zinc in the LCW Domain

 

Notes: Composite mean values are shown in blue (Au g/t) and estimated values in red (Au g/t*)

 

  
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For the halo domain there is significantly more informing data, and relatively lower variance in the variable grades compared to the tabular domains. The correlation between the estimates and information data in the swath plots in Figure 13.22 is considered to be good.

 

Figure 13.22:      Los Cuyes Z Swath Plots for Gold, Silver and Zinc in the Halo Domain

 

Notes: Composite mean values are shown in blue (Au g/t) and estimated values in red (Au g/t*)

 

  
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13.10.3   Soledad

 

The grade distribution at Soledad is variable, with higher grades of gold close to surface at the core of the grade shells, transitioning to a lower grade disseminated style of mineralization with greater depth. The base metals are more evenly distributed within the grade shell. The gold distribution is illustrated in Figure 13.23. The estimated grades overall show a good correlation with the composite data.

 

Figure 13.23:      Soledad Vertical Cross Section Looking West Showing Gold Grade

 

 

Examples of the swath plots generated at Soledad are shown in Figure 13.24 illustrating the relatively good reproduction of the composite grades in the estimates. The global comparison between the composites and estimate is shown in Table 13.24.

 

  
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Figure 13.24:      Soledad Y and Z Swath Plots for Gold

 

Notes: Composite mean values are shown in blue (Au g/t) and estimated values in red (Au g/t*)

 

Table 13.24:      Soledad Global Comparison Between Composites and Estimates

 

Deposit Au g/t Ag g/t Cu % Pb % Zn %
Composites 0.59 6.40 0.022 0.046 0.38
Estimates 0.56 6.70 0.024 0.042 0.41
% difference -5.8% 4.8% 9.0% -8.2% 8.2%

Notes: Composite grades are dedeclustered, only Indicated and Inferred estimates are included

 

  
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13.10.4  Enma

 

The grade distribution at Enma is variable. The gold distribution is illustrated in Figure 13.23. The estimated grades overall show a good correlation with the composite data.

 

Figure 13.25:       Enma vertical Cross Section Looking South Showing Gold Grade

 

 

Examples of the swath plots generated at Enma are shown in Figure 13.26 illustrating the relatively good reproduction of the composite grades in the estimates. The global comparison between the composites and estimate is shown in Table 13.25.

 

  
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Table 13.25:       Enma global comparison between composites and estimates

 

Deposit Au g/t Ag g/t Cu % Pb % Zn %
Composites 0.64 12.43 0.02 0.08 0.31
Estimates 0.64 13.39 0.02 0.07 0.30
% difference 0.4% 7.7% 7.9% -13.8% -3.9%

Notes: Composite grades are average, only Indicated and Inferred estimates are included

 

Figure 13.26:       Enma X and Z Swath Plots for Gold

 

Notes: Composite mean values are shown in blue (Au g/t) and estimated values in red (Au g/t*)

 

  
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13.11  Mineral Resource Classification

 

Mineral Resource classification is typically a subjective concept, industry best practices suggest that Mineral Resource classification should consider both the confidence in the geological continuity of the mineralized structures, the quality and quantity of exploration data supporting the estimates and the geostatistical confidence in the tonnage and grade estimates. Appropriate classification criteria should aim at integrating both concepts to delineate regular areas at similar resource classification.

 

In the QP’s opinion, the applied core handling, logging, sampling, and core storage protocols on the Condor Project are consistent with industry standards, and the QP is not aware of any drilling, sampling, or recovery factors that could materially impact the accuracy and reliability of these results. The analytical QAQC program has been in place over the duration of the exploration programs and has been used to monitor the accuracy and precision of the analytical laboratories. The QAQC data confirm that the analytical results have an acceptable accuracy and precision for use in Mineral Resource estimation, and do not represent a constraint in the classification of Mineral Resources. For Enma there is insufficient QAQC data from which to draw meaningful conclusions, however the quality of the assay results for Enma are expected to be consistent with that of the other deposits.

 

The exploration data and analytical results are of acceptable confidence and have been generated and managed by a competent team for the duration of the exploration programmes.

 

13.11.1       Camp

 

SVM has a credible interpretation of the mineralization controls that inform the geological modelling. The lithological modelling is generally consistent with the geological logging data and presents a reasonable interpretation of the lithologies which hosts the mineralization.

 

No Measured Mineral Resources are classified at Camp.

 

The drilling density is variable over the extent of the Camp. The largest domain is the CA-03 domain. This domain has the most intersections and is relatively thicker than the other domains. The core of the deposit is relatively well drilled, and in the model densely drilled area the drill hole spacing approximates 30 to 100 m. For the CA-03 domain blocks which have a slope of regression of greater than 0.7, are estimated in the first or second search pass, have an average distance of 60 m to the informing composites and are estimated with at least 3 drillholes support an Indicated classification. Blocks which are estimated within search passes 1 to 3 with at least 2 drillholes and minimum samples distance no more than 120 m are classified as Inferred Mineral Resources. Blocks behind this are not classified as Mineral Resources (Figure 13.27).

 

  
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Figure 13.27:       Plan Showing Camp Domain CA-03 Classification

 

 

Notes: Wireframe of domain CA-03 shown for context

 

Some area of CA-05 is intersected relatively closely spaced drill holes (<60 m). Block which are estimated in the first search pass, support an Indicated classification with at least 3 holes, with the remainder of the domain estimated in the second and third search pass with at least 2 drillholes and minimum samples distance no more than 120 m was classified as Inferred Mineral Resources (Figure 13.28).

 

  
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Figure 13.28:       Plan Showing Camp Domain CA-05 Classification

 

 

Notes: Wireframe of domain CA-05 shown for context

 

For other domains, Since CA-01 are relative thinner, drilling density of CA-02, CA-04 and CA-06 is variable over the extent of the domain, the confidence in the continuity of the mineralization is lower than that of the more extensive and better-informed domains. For these domains, the confidence in the domain and grade continuity only supports the classification of Inferred Mineral Resources, for blocks estimated in search passes 1 to 3 with at least 2 drillholes and minimum samples distance no more than 120 m.

 

13.11.2  Los Cuyes

 

SVM has a credible interpretation of the mineralization controls that inform the geological modelling. The lithological modelling is generally consistent with the geological logging data and presents a reasonable interpretation of the lithologies which hosts the mineralization.

 

No Measured Mineral Resources are classified at Los Cuyes.

 

For several of the NW domains there are only a small number of relatively widely spaced intersections. These are NW3, NW7, NW8, NW9, NW10, NW11, NW13 and NW15. The confidence in the continuity of the mineralization is lower than that of the more extensive and better-informed domains. For these domains, the confidence in the domain and grade continuity only supports the classification of Inferred Mineral Resources, for blocks estimated in the three search passes.

 

  
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NW5 is a relatively small domain, which is intersected by five relatively closely spaced drill holes (<50 m). Block which are estimated in the first search pass, support an Indicated classification, with the remainder of the domain estimated in the second search pass classified as Inferred Mineral Resources. The NW5 classification is illustrated in Figure 13.29.

 

Figure 13.29:       Section Showing Los Cuyes Domain NW5 Classification

 

 

Notes: Wireframe of domain LCW shown for context

 

NW1 is a larger domain, with nineteen intersections, several of which are in the thicker central part of the domain, resulting in a relatively large number of samples in the domain. The drilling density is variable over the extent of the domain, with some areas having very closely spaced data (< 10 m between intersections), and other areas with intersection spacings greater than 150 m. For NW1 the blocks which are estimated in the first search pass, which are informed by more than six composites, and for which the average distance to the informing composites is less than 40 m support classification as Indicated Mineral Resources. As is illustrated in Figure 13.30 there is a portion of the domain with closely spaced drilling in a limited area. Although there are block in this area that meet the above criteria, this area is otherwise poorly informed and does not support an Indicated classification. The remainder of the estimation domain is classified as an Inferred Mineral Resource.

 

  
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Figure 13.30: Section Showing Los Cuyes Domain NW1 Classification

Notes: Wireframe of domain LCW shown for context

 

The same criteria discussed for domain NW1 are applied for domain NW2, which results in a central portion of the domain supporting an Indicated classification, with the majority of the wider spaced domain classified as an Inferred Mineral Resource.

The largest domain at Los Cuyes is the LCW domain. This domain has the most intersections and is relatively thicker than the NW group of domains. The core of the deposit is relatively well drilled, however the semi-variogram ranges are not long relative to the drill hole spacing (Figure 13.31). In the model densely drilled area the drill hole spacing approximates 30 to 60 m. For the LCW domain blocks which have a slope of regression of greater than 0.7, are estimated in the first or second search pass, have an average distance of 40 m to the informing composites and are estimated with at least 8 composites support an Indicated classification. Blocks which have a slope of regression of greater than 0.5 and are estimated within search passes 1 to 3 are classified as Inferred Mineral Resources. Blocks behind this are not classified as Mineral Resources (Figure 13.31).

 

  
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Figure 13.31: Section Showing Los Cuyes Domain LCW Classification

Notes: Drill holes plotted in blue

 

Finally, for the disseminated halo domain, blocks estimated in the first search pass, with an average distance to composites of 40 m or less and estimated with a minimum of six composites support an Indicated classification. Beyond these blocks, all blocks estimated in the first or second search pass are classified as Inferred Mineral Resources.

 

13.11.3  Soledad

The mineralization controls and geological framework at Soledad are not well understood at present. There is no detailed lithological model available for this area. The constraints on the mineralization are limited to the grade shell that is modelled by SVM. The majority of the drilling is concentrated in three area, with a smaller number of wider spaced holes. The continuity modelled for gold is lower than that of the other variables modelled, particularly the base metals which have relatively longer ranges of continuity. In the densely drilled areas the drill hole spacing is in places as close as 10 m (Figure 13.32). There are areas where the grade is consistently elevated, which coincides with the densest drilling in many instances.

 

  
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No Measured Mineral Resources are classified at Soledad. Blocks which have a slope of regression of greater than 0.6 for silver and greater than 0.5 for gold, have an average distance of less than 50 m to the informing composites, and are estimated in the first search pass support an Indicated classification. The Inferred classification is limited to blocks within 75m of a composite sample. The majority of the grade envelope is classified as either Indicated or Inferred. Only 14% of the volume within the grade envelope does not meet these criteria and is not classified.

 

Figure 13.32: Section Showing Soledad Indicated Mineral Resource classification

Notes: Drill holes are coloured according to gold grade. The grade envelope is shown in pink, and the blocks classified as Indicated Mineral Resources are shown in green

 

13.11.4  Enma

There is no detailed lithological model available for Enma. The constraints on the mineralization are limited to the grade shell that is modelled by SRK. In the densely drilled areas the drill hole spacing is in places as close as 10 m (Figure 13.33). There are areas where the grade is consistently elevated, which coincides with the densest drilling in many instances.

No Measured Mineral Resources are classified at Enma. Blocks which have a slope of regression of greater than 0.7 for gold, have an average distance of less than 30 m to the informing composites, and are estimated in the first search pass support an Indicated classification. The remainder of the estimation domain is classified as an Inferred Mineral Resource.

 

  
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Figure 13.33: Section Showing Enma Indicated Mineral Resource Classification

Notes: Drill holes are coloured according to gold grade. The grade envelope is shown in pink, and the blocks classified as Indicated Mineral Resources are shown in green

 

13.12  Mineral Resource Statement

CIM Definition Standards for Mineral Resources and Mineral Reserves (2014) defines a Mineral Resource as:

“A Mineral Resource is a concentration or occurrence of solid material of economic interest in or on the Earth’s crust in such form, grade or quality and quantity that there are reasonable prospects for eventual economic extraction (“RPEEE”).”

For all the Condor projects, because the mineralization occurs relatively close to surface, the use of a pit optimisation shell is an acceptable standard approach used in industry for Mineral Resource reporting purposes to ensure that the Mineral Resource is tested for RPEEE. The Company considered future operation on Soledad and Enma using surface mining. However, at Camp and Los Cuyes SVM consider underground mining to be a preferred approach due to the steep terrain, relative complexity, high grade tabular mineralization, and that the surface infrastructure might best be located in Camp and/or Los Cuyes area.

The optimization parameters reflect a conventional open pit operation with the cost and revenue assumptions on Soledad and Enma detailed in Table 13.26 below. Note that the parameters used are not related to any mine plan or financial analysis, they were used only to define the RPEEE envelope, and the figures were derived from current information.

 

  
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The commodity prices are sourced from an independent analyst, Consensus Market Forecasts (CMF) for gold, silver, lead, and zinc. The projected outlook (in real USD) was issued by CMF in February 2025. The long-term prices were used for the consideration of the RPEEE.

 

Table 13.26: Pit Shell Optimization Inputs for RPEEE

Whittle Inputs Unit Enma Soledad
Costs      
Mining Cost USD/t Material 3 3
Processing Cost USD/t ROM 20 20
General & Admin USD/t ROM 12 12
Average Processing Recovery Rates      
Au % 75 90
Ag % 68 80
Zn % 0 0

Pb

Payability

% 0 0
Au % 99.5 99.5
Ag % 99.5 99.5
Zn % - -

Pb

Commodity Prices

% - -
Gold USD/oz 2,200 2,200
Silver USD/oz 27 27
Zinc USD/t Metal 2,650 2,650
Lead USD/t Metal 1,950 1,950
Royalty % of Revenue 3.00% 3.00%
Overall Slope Angle degree 45 45

Sources: CMF metal price projections, SRK benchmarks and assumptions

Notes: Pit slope angle are assumed and are not based on a geotechnical stability assessment

 

For the higher-grade and thicker tabular domains at Camp and Los Cuyes, there is the opportunity using a bulk mining method such as long hole open stoping for underground extraction. The thinner tabular domains at Camp and Los Cuyes require using more selective mining methods such as short hole shrinkage and/or cut and fill methods. The Company has extensive experience on selective mining methods and advised that they would like to consider a selective method as the primary approach. Therefore, a breakeven cut-off grade was calculated to determine the subset of the estimated blocks that can be economically exploited using shrinkage or cut and fill mining. For the underground mineral Resources, SRK used a Mineable Shapes Optimiser (MSO) to outline areas of the mineralization domain that have suitable continuity and grade to sustain underground mining operations. SVM intend using a highly selective mining method (shrinkage or cut and fill) for which the MSO process is not well suited. Therefore, SRK reported the underground Mineral Resources using only a cut off value and excluding small and isolated areas which are unlikely to be practically extractable.

 

  
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The input parameters associated with the cut-off grade estimates, as well as the factors used to calculate gold metal equivalent (AuEq), are presented in Table 13.27 below.

 

Table 13.27: Cut-off Grade Estimates for the Condor Project

 

Cut-off grade inputs1 Unit Enma Soledad Camp Los Cuyes

Costs

         
UG Cost USD/t ROM N/A N/A 80 80
Processing Cost USD/t ROM 20 20 40 35
General & Admin USD/t ROM 12 12 22 18
Processing Recovery Rates          
Au % 75 90 96 88
Ag % 68 80 66 68
Zn %     60  

Pb

Weighted Average Payability

%     38 62
Au % 99.5 99.5 99.5 99.2
Ag % 99.5 99.5 90.5 96.3
Zn % - - 70.0 -

Pb

Equivalent Factor to Au

% - - 88.6 77.4
Au Factor - - - -
Ag Factor 0.0111 0.0109 0.0076 0.0092
Zn Factor - - 0.1643 -
Pb Factor - - 0.0976 0.1515
COGs          
UG COG g/t AuEq     2.2 2.2
OP COG g/t AuEq 0.6 0.5    

Sources: SRK Benchmarks

Notes: The commodiy prices are as the same as Whittle Input in

2  The Equivalent Factor of Ag: Au= Ag price*Ag payable * Ag recovery / (Au price * Au payable * Au recovery)

3  The Equivalent Factor of Pb: Au=Pb price * Pb payable * Pb recovery /100/ (Au price * Au payable * Au recovery / 31.1034768)

4  The Equivalent Factor of Zn: Au=Zn price * Zn payable * Zn recovery /100/ (Au price * Au payable * Au recovery / 31.1034768)

5  Open pit cut-off grade = (Processing cost + G&A)/ (Au price * Au payable * Au recovery * (1-royalty)/31.1034768)

6  Underground cutoff grade = (Mining cost + Processing cost + G&A) / (Au price * Au payable * Au recovery * (1- royalty)/31.1034768)

 

The payability of Au and Ag in Camp and Los Cuyes are weighted average payable factors in both the bullion and the chargeable part in concentrates. The inputs of the payability assumptions are summarized in Table 13.28 below, and the weighted payability against processing rates are estimated in Table 13.29.

 

  
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Table 13.28: Payable Assumption Inputs

 

Product Element Deduction grades in Product. Payable after Deduction

Bullion

Au - 99.5%
  Ag - 99.5%
Pb Conc. Pb 3 95.0%
  Au 1 95.0%
  Ag 50 95.0%
Zn Conc. Zn 8 85.0%
  Ag 93.3 70.0%

Sources: The Company benchmarks

 

Table 13.29: Weighted Payable Estimates to Los Cuyes and Camp

 

Mine Product Element Processing Recovery Grade in Conc. Payable

Los Cuyes

Bullion

Au

87

  99.5
    Ag 49   99.5
  Pb Conc. Au 1 4 70.1
    Ag 19 650 87.7
    Pb 62 16 77.4
  Weighted Average Au 88   99.2
    Ag 68   96.3
    Pb 62   77.4
Camp Bullion Au 96   99.5
    Ag 45   99.5
  Pb Conc. Au 0.1 3.28 66.0
    Ag 12.3 3348 93.6
    Pb 38.1 44.2 88.6
  Zn Conc. Ag 8.7 218.7 40.1
    Zn 59.7 45.3 70.0
  Weighted Average Au 96   99.5
    Ag 66   90.5
    Pb 38   88.6
    Zn 60   70.0

Sources: the Company benchmarks and SRK estimates

 

Within the current mining license area, as of 31 December 2024, the Condor Project, above a COG of 2.2 g/t and 2.2 g/t for Camp and Los Cuyes is amenable to underground extraction; 0.6 g/t and 0.5g/t for Enma and Soledad are amenable to open pit extraction and were constrained with a conceptual pit, designed using Whittle software. The details of the estimated Mineral Resources are shown in Table 13.30 for Mineral Resources with underground mining potential, and in Table 13.31 for Mineral Resources with open pit mining potential.

 

  
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Table 13.30:     Underground Extraction Mineral Resource Statement for Condor Project, as of 28 February 2025

 

    Average Grade Contained Metal
Deposit Tonnes AuEq Au Ag Pb Zn AuEq Au Ag Pb Zn
  (Mt) (g/t) (g/t) (g/t) (%) (%) (koz) (koz) (koz) (lb’000) (lb’000)
Indicated
Camp 2.45 3.44 3.17 18.68 0.08 0.73 271 250 1,471 4,355 39,454

Los

Cuyes

0.72 4.04 3.82 22.9 0.09 0.63 93 88 528 1,366 9,966
Total 3.17 3.58 3.32 19.63 0.08 0.71 365 338 1,999 5,721 49,420
Inferred
Camp 7.90 3.38 3.07 20.59 0.08 0.89 859 780 5,229 13,271 154,944

Los

Cuyes

4.20 4.71 4.47 24.64 0.12 0.53 636 603 3,327 10,741 49,278
Total 12.1 3.84 3.55 22.00 0.09 0.77 1,495 1,383 8,556 24,012 204,222

Sources: SRK 2025

Notes: Mineral resources are reported above an underground extraction economic cut off value for Camp and Los Cuyes. Mineral Resources are not Mineral Reserves and do not have demonstrated economic viability. All figures are rounded to reflect the relative accuracy of the estimate. The Mineral Resources are reported on a 100% basis, and not the portion attributable to SVM. The resource statement does not include mineralization in the Halo domain of the Los Cuyes, and its economic potential remains to be further investigated in future studies.

Underground Mineral Resources are reported at a cut-off grade of 2.2 g/t AuEq at Camp and Los Cuyes. Underground cut off grades have been determined using a gold price of USD/oz 2,200, silver price of USD/oz 27, zinc price of USD/t 2,650 and lead price of USD/t 1,950.

1 troy ounce = 31.1034768 metric grams.

 

Table 13.31:     Open Pit Mineral Resource Statement for Condor Project, as of 28 February 2025

    Average Grade Contained Metal
Deposit Tonnes AuEq Au Ag Pb Zn AuEq Au Ag Pb Zn
  (Mt) (g/t) (g/t) (g/t) (%) (%) (koz) (koz) (koz) (lb’000) (lb’000)
Indicated

Soledad

Enma

4.03

0.03

1.14

1.05

1.06

0.97

7.05

7.11

0.05

0.07

0.56

0.30

148

1

138

1

912

7

4,365

46

49,882

214

Total 4.06 1.14 1.06 7.05 0.05 0.56 149 139 920 4,411 50,097
Inferred

Soledad

Enma

14.15

0.02

0.83

0.74

0.76

0.56

5.86

16.07

0.04

0.06

0.51

0.20

375

1

346

0

2,664

12

12,819

33

158,009

103

Total 14.17 0.82 0.76 5.87 0.04 0.51 376 347 2,676 12,851 158,112

Appendix ASources: SRK 2025

Notes: Mineral resources are reported in relation to a conceptual pit shell for Soledad and Enma. Mineral Resources are not Mineral Reserves and do not have demonstrated economic viability. All figures are rounded to reflect the relative accuracy of the estimate. The Mineral Resources are reported on a 100% basis, and not the portion attributable to SVM.

Open pit Mineral Resources are reported at a cut-off grade of 0.6 g/t AuEq for Enma and 0.5 g/t AuEq for Soledad. Open pit optimizations have been determined using a gold price of USD/oz 2,200, silver price of USD/oz 27, zinc price of USD/t 2,650 and lead price of USD/t 1,950.

1 troy ounce = 31.1034768 metric grams.

 

  
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13.13  Grade Sensitivity Analysis

Mineral Resources are sensitive to the selection of COGs. To illustrate this sensitivity, ore quantities and grade estimates at different COGs are presented in Table 13.32 to Table 13.35. The reader is cautioned that the figures presented in this table should not be mistaken for a Mineral Resource Statement. The figures are only presented to show the sensitivity of the block model estimates to the selection of COG. Figure 13.34 to Figure 13.37 represent this sensitivity as grade-tonnage curves.

 

Table 13.32: Global Block Model Quantities and Grade Estimates for Indicated and Inferred Category, Camp at Various cut-off Grades

 

Cut off

(AuEq g/t)

Tonnes

Mt

AuEq

g/t

Au

g/t

Ag

g/t

Pb

%

Zn

%

0 41.01 1.74 1.55 12.90 0.05 0.55
0.10 39.19 1.82 1.62 13.44 0.05 0.57
0.20 38.16 1.86 1.66 13.73 0.05 0.59
0.30 37.30 1.90 1.69 13.94 0.05 0.60
0.40 36.70 1.92 1.71 14.09 0.05 0.60
0.50 36.06 1.95 1.74 14.24 0.05 0.61
0.60 35.20 1.98 1.77 14.46 0.05 0.62
0.70 34.22 2.02 1.80 14.68 0.05 0.63
0.80 33.07 2.07 1.84 14.93 0.06 0.64
0.90 31.75 2.12 1.89 15.21 0.06 0.65
1.00 30.21 2.18 1.94 15.50 0.06 0.67
1.10 28.46 2.25 2.01 15.83 0.06 0.68
1.20 26.54 2.33 2.08 16.21 0.06 0.70
1.30 24.60 2.41 2.16 16.57 0.06 0.72
1.40 22.58 2.51 2.25 16.99 0.06 0.74
1.50 20.61 2.61 2.34 17.38 0.06 0.75
1.60 18.79 2.71 2.44 17.71 0.07 0.77
1.70 17.01 2.82 2.55 18.16 0.07 0.79
1.80 15.25 2.94 2.66 18.59 0.07 0.80
1.90 13.89 3.05 2.77 19.05 0.07 0.81
2.00 12.60 3.16 2.87 19.43 0.07 0.83
2.10 11.46 3.27 2.98 19.92 0.08 0.84
2.20 10.34 3.40 3.10 20.14 0.08 0.85
2.30 9.42 3.51 3.20 20.56 0.08 0.86
2.40 8.57 3.62 3.31 20.97 0.08 0.88
2.50 7.75 3.75 3.43 21.51 0.08 0.89
2.60 7.03 3.87 3.54 22.10 0.08 0.89
2.70 6.43 3.98 3.65 22.66 0.09 0.91
2.80 5.91 4.09 3.75 23.07 0.09 0.92
2.90 5.46 4.19 3.85 23.55 0.09 0.93
3.00 5.00 4.31 3.96 24.11 0.09 0.95

Notes: The reader is cautioned that the figures in this table should not be misconstrued with a Mineral Resource Statement. The figures are only presented to show the sensitivity of the block model estimates to the selection of cut-off grade. The tonnes reported in this tabulation are not limited by the reasonable prospects of eventual economic extraction that must be applied to a Mineral Resource

 

  
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Figure 13.34: Camp Deposit Global Grade Tonnage Curve

Notes: The reader is cautioned that the figures in this chart should not be misconstrued with a Mineral Resource Statement. The figures are only presented to show the sensitivity of the block model estimates to the selection of cut-off grade. The tonnes reported in this chart are not limited by the reasonable prospects of eventual economic extraction that must be applied to a Mineral Resource.

 

  
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Table 13.33: Global Block Model Quantities and Grade Estimates for Indicated and Inferred Category, Los Cuyes at Various cut-off Grades

 

Cut off

(AuEq g/t)

Tonnes

Mt

AuEq

g/t

Au

g/t

Ag

g/t

Pb

%

Zn

%

0 62.3 1.1 1.07 7.39 0.03 0.26
0.1 62.3 1.1 1.07 7.39 0.03 0.26
0.2 62.3 1.1 1.07 7.39 0.03 0.26
0.3 61.9 1.1 1.07 7.42 0.03 0.26
0.4 60.1 1.2 1.10 7.54 0.03 0.26
0.5 55.4 1.2 1.15 7.83 0.04 0.27
0.6 47.7 1.3 1.26 8.33 0.04 0.27
0.7 38.5 1.5 1.42 9.05 0.04 0.29
0.8 30.3 1.7 1.61 9.93 0.05 0.30
0.9 23.8 1.9 1.84 10.99 0.05 0.32
1 19.0 2.2 2.08 12.05 0.06 0.35
1.1 15.7 2.4 2.31 13.14 0.06 0.37
1.2 13.1 2.7 2.55 14.28 0.07 0.40
1.3 11.2 2.9 2.79 15.47 0.07 0.42
1.4 9.7 3.2 3.02 16.74 0.08 0.45
1.5 8.6 3.4 3.24 17.95 0.08 0.46
1.6 7.7 3.6 3.43 19.02 0.09 0.48
1.7 7.0 3.8 3.63 20.14 0.09 0.49
1.8 6.4 4.0 3.80 21.04 0.10 0.50
1.9 6.1 4.1 3.93 21.71 0.10 0.51
2 5.7 4.3 4.05 22.36 0.10 0.51
2.1 5.4 4.4 4.16 22.99 0.11 0.52
2.2 5.1 4.5 4.30 23.77 0.11 0.53
2.3 4.8 4.7 4.44 24.49 0.11 0.55
2.4 4.6 4.8 4.56 25.15 0.12 0.56
2.5 4.4 4.9 4.66 25.53 0.12 0.57
2.6 4.1 5.0 4.78 26.05 0.12 0.58
2.7 3.9 5.2 4.91 26.58 0.13 0.59
2.8 3.8 5.3 5.00 26.88 0.13 0.59
2.9 3.6 5.4 5.10 27.27 0.13 0.60
3 3.5 5.5 5.20 27.75 0.13 0.61

Notes: The reader is cautioned that the figures in this table should not be misconstrued with a Mineral Resource Statement. The figures are only presented to show the sensitivity of the block model estimates to the selection of cut-off grade. The tonnes reported in this tabulation are not limited by the reasonable prospects of eventual economic extraction that must be applied to a Mineral Resource.

 

  
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Figure 13.35: Los Cuyes Deposit Global Grade Tonnage Curve

 

 

Notes: The reader is cautioned that the figures in this chart should not be misconstrued with a Mineral Resource Statement. The figures are only presented to show the sensitivity of the block model estimates to the selection of cut-off grade. The tonnes reported in this chart are not limited by the reasonable prospects of eventual economic extraction that must be applied to a Mineral Resource.

 

  
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Table 13.34: Global Block Model Quantities and Grade Estimates for Indicated and Inferred Category, Soledad at Various cut-off Grades

 

Cut off

(AuEq g/t)

Tonnes

Mt

AuEq

g/t

Au

g/t

Ag

g/t

Pb

%

Zn

%

0 47.6 0.63 0.56 6.70 0.04 0.41
0.1 47.6 0.63 0.56 6.70 0.04 0.41
0.2 47.5 0.63 0.56 6.71 0.04 0.41
0.3 45.0 0.65 0.58 6.90 0.04 0.42
0.4 35.5 0.73 0.65 7.51 0.05 0.45
0.5 27.0 0.82 0.74 7.94 0.05 0.48
0.6 19.4 0.93 0.84 8.23 0.05 0.52
0.7 13.8 1.04 0.95 8.31 0.06 0.55
0.8 10.0 1.16 1.07 7.98 0.06 0.58
0.9 7.3 1.27 1.19 7.73 0.06 0.60
1 5.4 1.38 1.30 7.60 0.06 0.62
1.1 4.1 1.49 1.40 7.96 0.06 0.64
1.2 3.0 1.62 1.53 8.13 0.07 0.66
1.3 2.3 1.74 1.64 8.46 0.07 0.67
1.4 1.7 1.86 1.77 8.61 0.07 0.65
1.5 1.4 1.98 1.89 8.36 0.07 0.62
1.6 0.9 2.17 2.08 8.28 0.06 0.60
1.7 0.7 2.34 2.25 8.25 0.06 0.57
1.8 0.6 2.50 2.41 8.03 0.05 0.54
1.9 0.5 2.62 2.53 8.33 0.05 0.56
2 0.3 2.87 2.79 7.18 0.05 0.56
2.1 0.3 3.12 3.05 6.71 0.03 0.51
2.2 0.2 3.21 3.15 6.23 0.03 0.49
2.3 0.2 3.29 3.22 6.22 0.03 0.48
2.4 0.2 3.45 3.39 5.85 0.02 0.46
2.5 0.2 3.60 3.54 5.15 0.01 0.43
2.6 0.1 3.85 3.79 5.72 0.01 0.45
2.7 0.1 3.85 3.79 5.72 0.01 0.45
2.8 0.1 4.20 4.14 5.77 0.01 0.43
2.9 0.1 4.49 4.43 6.02 0.01 0.44
3 0.1 4.71 4.65 5.74 0.01 0.42

Notes: The reader is cautioned that the figures in this table should not be misconstrued with a Mineral Resource Statement. The figures are only presented to show the sensitivity of the block model estimates to the selection of cut-off grade. The tonnes reported in this tabulation are not limited by the reasonable prospects of eventual economic extraction that must be applied to a Mineral Resource.

 

  
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Figure 13.36: Soledad Deposit Global Grade Tonnage Curve

 

Notes: The reader is cautioned that the figures in this chart should not be misconstrued with a Mineral Resource Statement. The figures are only presented to show the sensitivity of the block model estimates to the selection of cut-off grade. The tonnes reported in this chart are not limited by the reasonable prospects of eventual economic extraction that must be applied to a Mineral Resource.

 

  
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Table 13.35: Global Block Model Quantities and Grade Estimates for Indicated and Inferred Category, Enma at Various cut-off Grades

 

Cut off

(AuEq g/t)

Tonnes

Mt

AuEq
g/t

Au

g/t

Ag

g/t

Pb

%

Zn

%

0 3.33 0.79 0.64 13.24 0.07 0.30
0.10 3.33 0.79 0.64 13.24 0.07 0.30
0.20 3.30 0.80 0.65 13.33 0.07 0.30
0.30 3.06 0.84 0.68 14.01 0.07 0.32
0.40 2.57 0.93 0.76 15.23 0.07 0.33
0.50 1.96 1.08 0.89 17.05 0.08 0.35
0.60 1.54 1.23 1.02 18.74 0.08 0.36
0.70 1.16 1.41 1.18 20.65 0.09 0.39
0.80 0.95 1.57 1.32 22.01 0.09 0.41
0.90 0.83 1.66 1.41 23.10 0.10 0.42
1.00 0.73 1.77 1.50 24.45 0.10 0.43
1.10 0.64 1.86 1.58 25.22 0.10 0.44
1.20 0.55 1.98 1.69 26.20 0.11 0.45
1.30 0.49 2.08 1.78 27.26 0.11 0.46
1.40 0.43 2.18 1.87 28.21 0.11 0.46
1.50 0.39 2.25 1.93 28.91 0.11 0.46
1.60 0.35 2.34 2.01 29.98 0.11 0.47
1.70 0.30 2.45 2.11 31.14 0.12 0.48
1.80 0.27 2.53 2.18 31.83 0.12 0.49
1.90 0.24 2.61 2.25 32.37 0.12 0.49
2.00 0.21 2.69 2.32 33.59 0.12 0.46
2.10 0.19 2.76 2.38 34.07 0.12 0.46
2.20 0.17 2.85 2.46 35.06 0.11 0.46
2.30 0.15 2.90 2.51 35.45 0.12 0.47
2.40 0.13 2.99 2.59 35.74 0.11 0.45
2.50 0.11 3.11 2.71 36.59 0.12 0.45
2.60 0.11 3.13 2.72 36.87 0.11 0.45
2.70 0.08 3.30 2.87 38.26 0.12 0.46
2.80 0.06 3.41 2.97 39.34 0.13 0.49
2.90 0.05 3.54 3.09 40.69 0.12 0.47
3.00 0.04 3.68 3.20 43.31 0.11 0.42

Notes: The reader is cautioned that the figures in this table should not be misconstrued with a Mineral Resource Statement. The figures are only presented to show the sensitivity of the block model estimates to the selection of cut-off grade. The tonnes reported in this tabulation are not limited by the reasonable prospects of eventual economic extraction that must be applied to a Mineral Resource

 

  
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Figure 13.37: Enma Deposit Global Grade Tonnage Curve

 

Notes: The reader is cautioned that the figures in this chart should not be misconstrued with a Mineral Resource Statement. The figures are only presented to show the sensitivity of the block model estimates to the selection of cut-off grade. The tonnes reported in this chart are not limited by the reasonable prospects of eventual economic extraction that must be applied to a Mineral Resource.

 

13.14  Previous Mineral Resource Estimate

MTB Enterprises Inc. was requested by Luminex Resource to complete a NI 43-101 compliant Mineral Resource estimation for the Condor project in 2021, including a Preliminary Economic Assessment (PEA) for the Condor North area that includes Los Cuyes, Soledad, Enma and Camp deposits.

The last Mineral Resource was reported above cut-offs detailed in the notes below to reflect open pit mining for Los Cuyes, Soledad, and Enma, and underground mining for the RPEEE criteria under the CIM Definition Standards. The results of the estimation are shown in Table 13.36.

 

  
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Table 13.36: Previous Condor Project Mineral Resources for selected projects Effective 28 July 2021

 

  Tonnes   Average Grade   Contained Metal
Deposit (Mt)

AuEq

(g/t)

Au

(g/t)

Ag

(g/t)

AuEq

(koz)

Au

(koz)

Ag

(Moz)

      Indicated        
Los Cuyes 50.8 0.71 0.65 5.2 1,161 1,059 8.5
Soledad 19.4 0.68 0.63 4.8 426 390 3
Enma 0.66 0.78 0.64 11.6 17 14 0.25
All 70.9 0.70 0.64 5.2 1,604 1,463 11.8
      Inferred        
Los Cuyes 36.4 0.65 0.59 5.3 761 687 6.2
Soledad 15.1 0.5 0.46 3.4 245 225 1.7
Enma 0.07 0.93 0.81 9.7 2 2 0.02
Camp 6 3.45 3.28 27.8 663 631 5.3
All 57.6 0.90 0.83 7.1 1,671 1,545 13.2

Sources: MBT 2021

Notes: Mineral resources exhibit reasonable prospects of eventual economic extraction using open pit extraction methods at Los Cuyes, Soledad and Enma and using underground mining methods at the Camp deposit. At Los Cuyes and Soledad, the base case cut-off grade is 0.30 g/t AuEq and at Enma, the base case cut-off grade is 0.37 g/t AuEq. At Los Cuyes, Soledad, and Enma, AuEq = Au g/t + (Ag g/t × 0.012). The base case cutoff grade for the Camp resource is 1.33 g/t AuEq, where AuEq = Au g/t + (Ag g/t x 0.0062).

Mineral resources that are not mineral reserves do not have demonstrated economic viability.

The major changes to the Mineral Resource between 2021 and 2024 include:

The additional data from Camp and Los Cuyes from the 2022 and 2023 exploration.

 

The wireframes of Camp and Los Cuyes were updated based on the new data and the interpretation of the mineralization.

 

The grade shells of Soledad and Enma were updated.

 

The Mineral Resource of Los Cuyes was planned as an open pit operation in 2021 PEA but this has switched to Underground mining in this estimate.

 

RPEEE assumptions (different commodity prices and recoveries) as well as changes in the reported cut-offs.

 

  
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14  Adjacent Properties

There are a number of other mineral occurrences in the Zamora copper-gold metallogenic belt, including deposits in the Condor Central and Condor South areas owned by SVM. The notable SVM deposits are shown in Figure 6.2 and include the Chinapintza epithermal gold veins immediately to the north of Los Cuyes, which extends beyond the Condor project mining concessions onto the adjacent Jerusalem Concession (Figure 14.1). To the south on the SVM concessions are known occurrences at Prometedor, El Hito, Santa Barbara and Nayumbi (Figure 6.2).

Figure 14.1: Plan Map – Chinapintza Veins – Jerusalem Concession

 

Sources: Ronning, 2003; Luminex, 2018, Luminex 2021

 

Luminex 2021 reports that TVX did an extensive amount of exploration work on the Jerusalem claim, including diamond drilling (35 holes; 9,338.1 m), trenching and underground development and sampling. In 1996, it calculated a historical Mineral Resource for this zone of 535,828 tonnes grading 12.5 g/t Au, 66.4 g/t Ag, 0.07% Cu, 0.76% Pb, 3.57% Zn (Ronning, 2003). This historical Mineral Resource estimate is detailed in the NI 43-101 Technical Report entitled “Review of the Jerusalem Project, Ecuador” with an effective date of May 30, 2003, and is available on SEDAR.

 

  
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In 2004, Maynard (2004) provided an updated historical Mineral Resource estimate for the veins on the Jerusalem concession (Table 14.1). This historical Mineral Resource estimate is detailed in the NI 43-101 Technical Report entitled “Independent Geological Evaluation, Jerusalem Project, Zamora Chinchipe, Ecuador for Dynasty Metals & Mining Inc.” with an effective date of October 29, 2004 and is available on SEDAR. The QP has been unable to verify this Mineral Resource estimate, and it is not necessarily indicative of mineralization on the Condor North Project.

 

Table 14.1: Maynard (2004) Jeruslem Concession Mineral Resources

 

Category Tonnes Au
(g/t)
Ag
(g/t)
Cu
(ppm)
Pb
(ppm)
Zn
(ppm)
Measured 298,900 13.9 102 576 563 26,859
Indicated 722,500 12.8 98 360 3,560 17,660
Inferred 1,785,200 11.6 103 424 3,887 18,397

Sources: Maynard, 2004

Notes: These have not been reviewed by SRK

 

The authors of this report have not completed sufficient work to verify the historical Mineral Resource on the Jerusalem concession and this information is not necessarily indicative of mineralization on the Condor North area.

In 2021 Luminex reported a Mineral Resource for the Santa Barbara deposit. Santa Barbara is a gold- copper porphyry hosted in alkali basalts of unknown age. These are intruded by diorite and surrounded by the Zamora Batholith. These host units are capped by a veneer of conglomerates of the Chapiza Formation and in turn overlain by quartz arenites of the Hollín Formation. The Luminex Mineral Resource estimate for Santa Barbara is shown in Table 14.2. The QP has not reviewed the Santa Barabara Mineral Resources.

 

Table 14.2: Luminex (2021) Mineral Resource estimate for the Santa Barbara Deposit

 

  Tonnes   Average Grade  Contained Metal
Class (Mt)

AuEq

(g/t)

Au

(g/t)

Ag

(g/t)

AuEq

(koz)

Au

(koz)

Ag

(Moz)

Indicated 39.8 0.83 0.67 0.8 1,057 859 1.0
Inferred 166.7 0.66 0.52 0.9 3,534 2,768 4.9

Sources: Luminex, 2021

Note: Mineral resources exhibit reasonable prospects of eventual economic extraction using open pit extraction methods. The base case cut-off grade is 0.37 g/t AuEq where: AuEq = Au g/t + (Ag g/t × 0.012) + (Cu% x 1.371)

 

  
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15  Other Relevant Data and Information

The QP is not aware of any other relevant data that would affect the opinions stated in this report.

 

  
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16  Interpretation and Conclusions

 

SVM has undertaken a review, re-logging, and remodelling of the mineralization at the Condor Project. At the Los Cuyes and Camp deposits the updated model of mineralization has included identification of several high-grade tabular domains which are potentially amenable to extraction using underground mining methods. At Soledad, Enma and outside of the high-grade domains at Los Cuyes SVM have modelled a lower grade disseminated mineralization which has the potential for extraction using an open pit mining method.

 

This mineralization interpretation at Los Cuyes is a change from the previous model which only considered a disseminated mineralization style, and did not isolate the high-grade zones separately. For some domains at Los Cuyes (such as the LCW domain) the data strongly support the revised interpretation, with good continuity in the mineralization observed over the project area. While for other domains, the continuity is less clear, and the quantity of data supporting these is less. Resulting in lower confidence in these interpretations. The lateral extents of some of the domains are based on wider spaced drilling which naturally carries some additional risk to the confidence in the interpretation of the domain continuity.

 

At Camp, the previous models relied on interpolated domain definition using indicators, and the current interpretation is supported by a more geologically rigorous interpretation using a combination of the grade and geological logs to link up intersections between drill holes into more coherent and continuous domains.

 

The geological interpretation at Soledad and Enma is not as well developed as that of Los Cuyes and Camp, relying on grade shells to constrain the mineralization. At Soledad, there is sufficient dense sampling in several locations to confirm the continuity of the mineralization despite the lower understanding of the mineralization controls, and SRK considers this sufficient to support an Indicated Mineral Resource classification.

 

For all the deposits, the metallurgical test work indicated that there are reasonable prospects for achieving the recoveries applied to the economic assessment. However, further work is required to be able to confirm the optimal processing configuration for each style of mineralization. As such, there is a risk that these recovery factors may change with additional test work and depending on the ultimate processing flow sheet that is selected if the project is developed.

 

  
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17  Recommendations

 

To confirm the interpretation of the high-grade domains at Camp and Los Cuyes SRK recommends a phased exploration program should be undertaken. SVM has planned an initial two-phase exploration program of surface drilling as summarised in Table 17.1. The initial phase plans for drilling six holes at Los Cuyes with an average length of approximately 400 m for a total of 2,470 m, and a second phase drilling four holes split between Los Cuyes and Camp totalling 1,030 m.

 

Table 17.1: Proposed Initial Exploration Program for the Condor Project

 

Phase Deposit No Holes Meters Cost (US$
Phase 1 Los Cuyes 6 2,470  
Phase 2 Los Cuyes 2 510  
  Camp 2 520  
Total   10 3,500 $730,000
Sources: SVM        

 

Pending the approval of an environmental permit which is in progress at present, SVM plans to develop underground access drives to intersect the mineralization, and to provide platforms for drilling which will allow for better targeted drilling of shorter holes from the underground development. SVM has not yet developed a detailed development and drilling plant, as this is contingent on the outcomes of the initial surface drilling results and the approval of the environmental permit applications.

 

SRK recommends that the two processes of "bulk flotation – bulk concentrate cyanidation - cyaniding residue separation flotation " and "cyanidation - cyaniding residue flotation" should be tested in detail, and the trade-off study between the two processes should be conducted according to the final test results.

 

  
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References

CIM, 2014. Definition Standards for Mineral Resources and Mineral Reserves (May 2014).

CIM, 2019 Estimation of Mineral Resources and Mineral Reserves Best Practices Guidelines (November 29, 2019)

C.H. Plenge & C.I.A. S.A. of Lima, Peru, May 26, 2021, Report of Investigation No.18525-73-89, Progress Report, Luminex Condor North Project, Camp, Los Cuyes, Enma Samples, Zamora Province, Southeast Ecuador

Drobe, J.L. Stein, D. Gabites, J., 2013. Geology, Mineralization and Geochronological Constraints of the Mirador Cu-Au Porphyry District, Southeast Ecuador. Economic Geology, v. 108, pp. 11–35.

Elfen, S., Davis, B.M., Michel, R.S., King, N. K., Sim, R., McNaughton, J. S. C. Marek, J. M., Barber, J. C., Norrish, N. I., Hathaway, L., 2021: Preliminary Economic Assessment Zamora-Chinchipe, Ecuador, Prepared for Luminex Resources

Goldmarca Mining Peru S.A.C, May 2004, Breccias -Sanjose-Ecuador Direct Cyaniding Metallurgical Testwork

Hathaway, L, (Undated) Adventus - Advanced Projects and Exploration Assets - Ecuador

Hedenquist, J.W., Izawa, E., Arribas, A., Jr., and White, N.C., 1996. Epithermal gold deposits: Styles, characteristics, and exploration: Resource Geology Special Publication 1, p. 17.

Independent Metallurgical Laboratories Pty Ltd., May 2006, San Jose Ore Evaluation Testwork, Condor Gold Project for Goldmarca Limited Lumina Gold Corp (Authors not listed), 2017: Guide for Exploration Operations Preliminary Draft Rev. 0

Luminex Internal Report (Authors not listed), 2020: March-2020 QAQC Camp Area

Maynard, A., Jones, P.A. 2011. NI 43-101 Technical Report (revised) on the Condor Gold Project located in Zamora, Ecuador. p. 124.

Plenge Laboratory, July 24, 2020, Report of Investigation No.18525 (Base Camp Samples Progress Report)

Plenge Laboratory, August 29, 2023, Report of Investigation No.18702 (Condor Project, Los Cuyes (High Grade, Low Grade), Breccia Pipe)

 

  
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Appendix

 

Qualified Persons Certificates

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  
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CERTIFICATE OF QUALIFIED PERSON

 

To Accompany the report entitled: Independent Technical Report for the Condor Project, Ecuador, May 12, 2025.

 

I, Mark Wanless, residing at 47 Ball Crescent, Whitby, ON, Canada do hereby certify that:

 

1)I am a Principal Geologist with the firm of SRK Consulting (Canada) Inc. (SRK) with an office at Suite 1500 – 155 University Avenue, Toronto, Ontario, Canada;
2)I am a graduate of the University of Cape Town with a BSc (Hons) in Geology in 1995. I have practiced my profession continuously since 1996. During the past 28 years, I have undertaken numerous Mineral Resource estimates and audits for gold and multi commodity projects and operating mines in several countries across five continents;
3)I am a professional Geoscientist registered with the South African Council for Natural Scientific Professionals (Registration No 400178/05). I am a Fellow of the Geological Society of South African and a Member of the Geostatistical Association of South Africa and a Member of the South African Institute of Mining and Metallurgy;
4)I have personally inspected the subject project June 19-20, 2024;
5)I have read the definition of Qualified Person set out in National Instrument 43-101 and certify that by virtue of my education, affiliation to a professional association, and past relevant work experience, I fulfill the requirements to be a Qualified Person for the purposes of National Instrument 43-101 and this technical report has been prepared in compliance with National Instrument 43-101 and Form 43-101F1;
6)I, as a Qualified Person, I am independent of the issuer as defined in Section 1.5 of National Instrument 43-101;
7)I am the co-author of this report and responsible for sections 1 to 11 and 12 to 18 and accept professional responsibility for those sections of this technical report;
8)I have had no prior involvement with the subject property;
9)I have read National Instrument 43-101 and confirm that this technical report has been prepared in compliance therewith;
10)SRK Consulting (Canada) Inc. was retained by Silvercorp Metals Inc. to prepare a technical audit of the Condor Project. In conducting our audit, a gap analysis of project technical data was completed using CIM Estimation of Mineral Resources and Mineral Reserves Best Practice Guidelines and Canadian Securities Administrators National Instrument 43-101 guidelines. The preceding report is based on a site visit, a review of project files and discussions with Silvercorp Metals Inc. personnel;
11)I have not received, nor do I expect to receive, any interest, directly or indirectly, in the Condor Project or securities of Silvercorp Metals Inc.; and
12)That, as of the date of this certificate, to the best of my knowledge, information and belief, this technical report contains all scientific and technical information that is required to be disclosed to make the technical report not misleading.

 

  [“signed and sealed”]
Toronto Mark Wanless, PrSciNat
May 12, 2025 Principal Geologist

 

  
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CERTIFICATE OF QUALIFIED PERSON

 

To Accompany the report entitled: Independent Technical Report for the Condor Project, Ecuador, May 12, 2025.

 

I, Falong Hu, residing at B1301 COFCO Plaza, 8 Jianguomennei Dajie, Beijing, the People’s Republic of China, do hereby certify that:

 

1)I am a Principal Mining Engineer with the firm of SRK Consulting (China) Ltd. (SRK) with an office at B1301 COFCO Plaza, 8 Jianguomennei Dajie, Beijing, China;
2)I am a graduate of the Central South University with a bachelor’s degree in mining engineering in 2009. I have practiced my profession continuously since 2009. During the past 16 years, I have undertaken numerous mining studies, Mineral (Ore) Reserve estimates and audits, and supports on Reasonable Prospects for Eventual Economic Extraction (“RPEEE”) during Mineral Resource estimates, for gold and multi commodity projects and operating mines in several countries;
3)I am a Fellow of the Australasian Institute of Mining and Metallurgy (“FAusIMM”), (#313608), and in a good standing;
4)I have personally inspected the subject project June 19-20, 2024;
5)I have read the definition of Qualified Person set out in National Instrument 43-101 and certify that by virtue of my education, affiliation to a professional association, and past relevant work experience, I fulfill the requirements to be a Qualified Person for the purposes of National Instrument 43-101 and this technical report has been prepared in compliance with National Instrument 43-101 and Form 43-101F1;
6)I am independent of the issuer as defined in Section 1.5 of National Instrument 43-101;
7)I am the co-author of this report and responsible for the RPEEE and cut-off grade(s) (“COGs”) parts of sections 13.12 accept professional responsibility for those part of this technical report;
8)I have had no prior involvement with the subject property;
9)I have read National Instrument 43-101 and confirm that this technical report has been prepared in compliance therewith;
10)SRK Consulting (Canada) Inc. was retained by Silvercorp Metals Inc. to prepare a technical audit of the Condor Project. In conducting our audit, a gap analysis of project technical data was completed using CIM Estimation of Mineral Resources and Mineral Reserves Best Practice Guidelines and Canadian Securities Administrators National Instrument 43-101 guidelines. The preceding report is based on a site visit, a review of project files and discussions with Silvercorp Metals Inc. personnel;
11)I have not received, nor do I expect to receive, any interest, directly or indirectly, in the Condor Project or securities of Silvercorp Metals Inc.; and
12)That, as of the date of this certificate, to the best of my knowledge, information and belief, this technical report contains all scientific and technical information that is required to be disclosed to make the technical report not misleading.

 

  [“signed and sealed”]
Beijing Falong Hu, FAusIMM
May 12, 2025 Principal Mining Engineer

 

  
SRK CONSULTING (CANADA) INC.    MAY 12, 2025 

CAPR003605  ■  Silvercorp Metals Inc.
Independent Technical Report for the Condor Project, Ecuador

 

CERTIFICATE OF QUALIFIED PERSON

 

To Accompany the report entitled: Independent Technical Report for the Condor Project, Ecuador, May 12, 2025.

 

I, Lanliang Niu, residing at B1301 COFCO Plaza, 8 Jianguomennei Dajie, Beijing, the People’s Republic of China, do hereby certify that:

 

1)I am a Principal Mineral Processing Engineer, worked for SRK Consulting China Ltd. (“SRK CN”) with an office at: B1301 COFCO Plaza, 8 Jianguomennei Dajie, Beijing, the People’s Republic of China (“PRC” or “China”);
2)I graduated with a bachelor’s degree in mineral processing from Beijing University of Iron and Steel Technology in 1987. I have practiced my profession as a Mineral Processing Engineer for a total of 37 years since my graduation and have worked at SRK CN for 17 years as a Mineral Processing Consultant.
3)I am a member of the Australasian Institute of Mining and Metallurgy (“MAusIMM”), (#313608), and a member of China Association of Mineral Resources Appraisers (“CAMRA”);
4)I have not personally inspected the subject project;
5)I have read the definition of Qualified Person set out in National Instrument 43-101 and certify that by virtue of my education, affiliation to a professional association, and past relevant work experience, I fulfill the requirements to be a Qualified Person for the purposes of National Instrument 43-101 and this technical report has been prepared in compliance with National Instrument 43-101 and Form 43-101F1;
6)I am independent of the issuer as defined in Section 1.5 of National Instrument 43-101;
7)I am a co-author of this technical report and have supervised the independent verification completed by SRK and the preparation of Section 13, 17 and 18.2 of this technical report for QP review. I accept professional responsibility for those sections I co-authored;
8)I have had no prior involvement with the subject property;
9)I have read National Instrument 43-101 and confirm that this technical report has been prepared in compliance therewith;
10)SRK Consulting (Canada) Inc. was retained by Silvercorp Metals Inc. to prepare a technical audit of the Condor Project. In conducting our audit, a gap analysis of project technical data was completed using CIM Estimation of Mineral Resources and Mineral Reserves Best Practice Guidelines and Canadian Securities Administrators National Instrument 43-101 guidelines. The preceding report is based on a site visit, a review of project files and discussions with Silvercorp Metals Inc. personnel;
11)I have not received, nor do I expect to receive, any interest, directly or indirectly, in the Condor Project or securities of Silvercorp Metals Inc.; and
12)That, as of the date of this certificate, to the best of my knowledge, information and belief, this technical report contains all scientific and technical information that is required to be disclosed to make the technical report not misleading.

 

  [“signed and sealed”]
Beijing Lanliang Niu, MAusIMM
May 12, 2025 Principal Consultant (Mineral Processing)

  
SRK CONSULTING (CANADA) INC.    MAY 12, 2025 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

© 2025 SRK Consulting (Canada) Inc.

 

This document, as a collective work of content and the coordination, arrangement and any enhancement of said content, is protected by copyright vested in SRK Consulting (Canada) Inc. (SRK).