Reserves and Resources

Notes: Totals may not add due to rounding. Mineral reserve estimates for Soto Norte represent the portion of mineral reserves attributable to Aris Mining based on its 20% ownership interest. Mineral reserves were estimated using a gold price of USD$1,500 per ounce at Marmato, USD$1,300 per ounce at Soto Norte, and USD$1,700 per ounce at Segovia. The mineral reserve effective dates are June 30, 2022 for Marmato, January 1, 2021 for Soto Norte, and December 31, 2021 for Segovia. This disclosure of mineral reserve estimates has been approved by Pamela De Mark, P. Geo, Senior Vice President Technical Services of Aris Mining, who is a Qualified Person as defined by National Instrument 43-101.

Notes: Mineral resources are not mineral reserves and do not have demonstrated economic viability. Mineral resource estimates are reported inclusive of mineral reserves. Totals may not add due to rounding. Mineral resource estimates for Soto Norte represent the portion of mineral resources attributable to Aris Mining based on its 20% ownership interest. Mineral resources were estimated using a gold price of USD$1,700 per ounce at Marmato, USD$1,300 per ounce at Soto Norte, USD$1,850 per ounce at the Segovia Property, USD$1,650 at Toroparu, and USD$1,450 per ounce at Juby. The mineral resource effective dates are June 30, 2022 for Marmato, May 29, 2019 for Soto Norte, December 31, 2021 for Segovia, February 10, 2023 for Toroparu, and July 14, 2020 for Juby. This disclosure of mineral resource estimates has been approved by Pamela De Mark, P. Geo, Senior Vice President Technical Services of Aris Mining, who is a Qualified Person as defined by National Instrument 43-101.

Notes: See notes under Measured and Indicated mineral resource estimates

Technical disclosure

Technical reports

The technical reports, as entitled below, for Segovia, Marmato, Soto Norte, Toroparu and Juby confirm that the qualified persons responsible for the preparation of the technical reports have verified the data disclosed, including drilling, sampling, assaying, and QAQC protocols and results, and are of the opinion that the sample recovery, preparation, analyses, and security protocols used for the mineral resource estimates are reliable for that purpose.

1. "Technical Report for the Marmato Gold Mine, Caldas Department, Colombia, Pre-Feasibility Study of the Lower Mine Expansion Project" dated November 23, 2022 with an effective date of June 30, 2022 (the “2022 Marmato Pre-Feasibility Study). The 2022 Marmato Pre-Feasibility Study was prepared by Ben Parsons, MAusIMM (CP), Anton Chan, Peng, Brian Prosser, PE, Joanna Poeck, SME-RM, Eric J. Olin, SME-RM, MAusIMM, Fredy Henriquez, SME, ISRM, David Hoekstra, PE, NCEES, SME-RM, Mark Allan Willow, CEM, SME-RM, Vladimir Ugorets, MMSA, Colleen Crystal, PE, GE, Kevin Gunesch, PE, Tommaso Roberto Raponi, P.Eng, David Bird, PG, SME-RM, and Pamela De Mark, P.Geo., each of whom  is a "Qualified Person" as such term is defined in NI 43-101, and with the exception of Pamela De Mark of Aris Mining, are independent of the Company within the meaning of NI 43-101. 
2. “NI 43-101 Technical Report Feasibility Study of the Soto Norte Gold Project, Santander, Colombia”, dated March 21, 2022 with an effective date of January 1, 2021 (the “Soto Norte Technical Report”). The Soto Norte Technical Report was prepared by Ben Parsons, MSc, MAusIMM (CP), Chris Bray, BEng, MAusIMM (CP), and Dr John Willis PhD, BE (MET), AusIMM (CP), and Dr Henri Sangam, Ph.D., P.Eng., each of whom is independent of the Company within the meaning of NI 43-101 and is a “Qualified Person” as such term is defined in NI 43-101. The report was also prepared by Robert Anderson, P.Eng., a Qualified Person who is considered non-independent of the Company.  
3. "NI 43-101 Technical Report, Prefeasibility Study, Segovia Project, Antioquia, Colombia" dated May 6, 2022 with an effective date of December 31, 2021 (the “Segovia Technical Report”). The Segovia Technical Report was prepared by Ben Parsons, MSc, MAusIMM (CP), Eric Olin, MSc, MBA, MAusIMM, SME-RM, Cristian A. Pereira Farias, SME-RM, David Bird, MSc, PG, SME-RM, Fredy Henriquez, MS Eng, SME, ISRM, Jeff Osborn, BEng Mining, MMSAQP, Fernando Rodrigues, BS Mining, MBA, MAusIMM, MMSAQP, Giovanny Ortiz, BS Geology, FAusIMM, Joshua Sames, PE, BEng Civil, Mark Allan Willow, MSc, CEM, SME-RM, and Jeff Parshley, P.G., each of whom is independent of the Company within the meaning of NI 43-101 and is a "Qualified Person" as such term is defined in NI 43-101. 
4. "Technical Report on the Updated Mineral Resource Estimate for the Juby Gold Project, Tyrrell Township, Shining Tree Area, Ontario" dated October 5, 2020 with an effective date of July 14, 2020 (the “Juby Technical Report”). The Juby Technical Report was prepared by Joe Campbell, B.Sc., P.Geo., Alan Sexton, M.Sc., P.Geo., Duncan Studd, M.Sc., P.Geo. and Allan Armitage, Ph.D., P.Geo., each of whom is independent of the Company within the meaning of NI 43-101 and is a "Qualified Person" as such term is defined in NI 43-101.  
5. “Updated Mineral Resource Estimate NI 43-101 Technical Report for the Toroparu Project, Cuyuni-Mazaruni Region, Guyana” dated March 31, 2023 with an effective date of February 10, 2023 (the “Toroparu Technical Report”). The Toroparu Technical Report was prepared by Ekow Taylor, FAusIMM (CP), Maria Muñoz, MAIG, and Karl Haase, P.Eng., each of whom is independent of the Company within the meaning of NI 43-101 and is a “Qualified Person” as such term is defined in NI 43-101.  

The mineral resource estimate of the Segovia Operations is summarized, derived, or extracted from the news release of the Company dated March 3, 2023, which is available for review on the Company’s website at www.aris-mining.com and on the Company’s profile on SEDAR+ at www.sedarplus.ca, and which has been reviewed and approved by Pamela De Mark, P.Geo, Senior Vice President, Technical Services of Aris Mining, who is a Qualified Person as defined by National Instrument 43-101.

All the technical reports listed above are available for download on Aris Mining’s website at www.aris-mining.com. The Soto Norte Technical Report and the Juby Technical Report are available for download on the SEDAR+ profile of Aris Holdings at www.sedarplus.ca. Aris Holdings is now a subsidiary of the Aris Mining. The other technical reports are available for download on Aris Mining’s profile on SEDAR+ at www.sedarplus.ca.

Qualified person

This technical information was reviewed and approved by Pamela De Mark, P. Geo, Senior Vice President Technical Services of Aris Mining, who is a Qualified Person as defined by NI 43-101.