Exhibit 99.2

ADDENDUM No . 02 TO THE CONTRACT FOR THE OPTION TO ASSIGN MINING CONCESSION CONTRACT [Redacted – Commercially Sensitive Information] signed between ASOCIACIÓN DE MINEROS GUAYABALES and MINERALES PROVENZA S . A . S . Between the undersigned, on the one hand, NATALIA ANDREA HERNANDEZ ARIAS , identified as it appears under her signature, acting in her capacity as legal representative of MINERALES PROVENZA S . A . S . , (hereinafter " PROVENZA "), according to the attached certificate of incorporation and legal representation ; and on the other hand, [Redacted – Confidential Information] , identified as it appears under his signature, acting in his capacity as legal representative of ASOCIACIÓN DE MINEROS GUAYABALES (hereinafter " GUAYABALES "), duly empowered by the associates and according to the attached certificate of incorporation and legal representation : we have agreed to sign this Addendum No . 02 to the CONTRACT FOR THE OPTION TO ASSIGN MINING CONCESSION CONTRACT [Redacted – Commercially Sensitive Information] , which shall be governed by the following clauses : FIRST CLAUSE : Modify the date on which MINERALES PROVENZA must make the first payment specified in “Sixth Clause – Payments” of the CONTRACT FOR THE OPTION TO ASSIGN MINING CONCESSION CONTRACT [Redacted – Commercially Sensitive Information] in favor of GUAYABALES, and it shall read as follows : “ Sixth Clause – Payments : The payments that GUAYABALES will receive from PROVENZA under this contract, the OPTION and eventual transfer of ownership of the CONCESSION , will be made as follows : 6.1. Phase 1: The total value of Phase 1 is TWO MILLION UNITED STATES DOLLARS (USD 2,000,000), payable as follows: Amount Enforceability Installment No. USD 350,000" July 21, 2020 1 SECOND CLAUSE: The other clauses of the Main Contract remain unchanged and continue in force until its termination. THIRD CLAUSE: The signature of the parties is required for the legalization of this Addendum No. 02. In witness whereof, it is signed in Supía on 16 July 2020 and shall be printed in two identical copies with the same probative value. DE By ASOCIACIÓN DE MINEROS GUAYABALES By MINERALES PROVENZA S.A.S. [Signed] [Fingerprint] [Redacted – Confidential Information] ID Card No. [Redacted – Confidential Information] [Signed] NATALIA A. HERNANDEZ ARIAS I.D. Card No. [Redacted – Confidential Information] 108705 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 28/03/2026

Alternate Legal Representative Legal Representative 108706 Scan QR to verify/Escanear QR para verificar. Translation date/Fecha de traduccion: 28/03/2026