Geology

The Mocoa deposit is located in the Jurassic belt in the Andean cordillera (Central Cordillera of Colombia), a 30km wide tectonic belt underlain by volcano-sedimentary, sedimentary and intrusive rocks that range in age from Triassic-Jurassic to Quaternary, and by remnants of Paleozoic metasediments and metamorphic rocks of Precambrian age. This Jurassic belt hosts several other porphyry-copper deposits, such as Mirador2 (609Mt of 0.58% Cu, containing 7.8Blb of Cu, 3.2 Moz of Au and 22Moz of Ag), San Carlos3 (600Mt of 0.59% Cu, containing 7.7Blb of Cu), Panantza3 (463Mt of 0.66% Cu, containing 6.6Blb of copper) and Solaris' flagship Warintza project4 (909 Mt of 0.53% CuEq in the Measured + Indicated category and 1,426 Mt of 0.37% CuEq in the Inferred category), all located in Ecuador.

Copper-molybdenum mineralization is associated with a dacite porphyry intrusion and breccia-related of Early to Middle Jurassic age emplaced into andesitic and dacitic volcanic rocks grouped into the Saldaña Formation.  The Mocoa porphyry system exhibits a classical zonal pattern of hydrothermal alteration and mineralization, with a deeper central core of potassic alteration (Kspar) overlain by sericitization and surrounded by propylitization.  Mineralization consists of disseminated chalcopyrite, molybdenite and minor contents of bornite and chalcocite associated with multiphase veins, stockworks and hydrothermal breccias.  The Mocoa deposit is roughly cylindrical, with a 600m diameter and thicknesses that range from 250m to 350m.  High-grade copper-molybdenum mineralization continues to depths in excess of 1,000m and open in all directions

2 Drobe, J., Lindsay, D., Stein, H., & Gabites, J. (2013). Geology, Mineralization, and Geochronological Constraints of the Mirador Cu-Au Porphyry District, Southeast Ecuador. Economic Geology, 108, 11–35.

3 Drobe, J., Hoffert, J., Fong, R., Haile, J. P., & Rokosh, J. (2007). Panantza & San Carlos Copper Project Preliminary Assessment Report.

4 Rossi, M. E. (2022). NI 43‐101 Technical Report for the Warintza Project, Ecuador.