v3.26.1
Document And Entity Information
 12 Months Ended
Dec. 31, 2025
shares
Document Information Line Items  
Entity Central Index Key 0001953575
Document Type 40-F
Document Registration Statement false
Document Annual Report true
Current Fiscal Year End Date --12-31
Document Period End Date Dec. 31, 2025
Document Fiscal Year Focus 2025
Entity File Number 001-42170
Entity Registrant Name Collective Mining Ltd.
Entity Incorporation, State or Country Code A6
Entity Primary SIC Number 1040
Entity Tax Identification Number 00-0000000
Entity Address, Address Line One 82 Richmond Street East
Entity Address, Address Line Two 4th Floor Toronto
Entity Address, City or Town Ontario
Entity Address, Country CA
Entity Address, Postal Zip Code M5C 1P1
City Area Code (416)
Local Phone Number 451-2727
Title of 12(b) Security Common Shares without par value
Trading Symbol CNL
Security Exchange Name NYSEAMER
Annual Information Form true
Audited Annual Financial Statements true
Entity Common Stock, Shares Outstanding 92,537,998
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Emerging Growth Company true
Entity Ex Transition Period false
ICFR Auditor Attestation Flag false
Document Financial Statement Error Correction [Flag] false
Auditor Name BDO Canada LLP
Auditor Location Ontario, Canada
Auditor Firm ID 1227
Amendment Flag false
Document Fiscal Period Focus FY
Business Contact  
Document Information Line Items  
Entity Address, Address Line One 122 E. 42nd Street
Entity Address, Address Line Two 18th Floor
Entity Address, City or Town New York
Entity Address, Postal Zip Code 10168
City Area Code (800)
Local Phone Number 221-0102
Contact Personnel Name Cogency Global Inc.
Entity Address, State or Province NY