Andina Copper Reports Assay Results from Cobrasco Project
Vancouver, British Columbia — February 5, 2026 — Leads & Copy — Andina Copper Corporation (TSX-V: ANDC | FSE: FIR | OTCQB: PMMCF) has announced assay results for its first diamond drillhole CDH003 at the Cobrasco copper-molybdenum project in the Chocó Department, Colombia.
Since starting field exploration in early October 2025, the company has completed three diamond drill holes for 2609 m, with a fourth hole underway.
Drillhole CDH003 intersected significant copper mineralization from surface to final depth (774.8m). High-grade intersections include 352 m @ 0.68% Cu, 112 ppm Mo, 1.55 g/t Ag from 144 m; Including 118 m @ 1.17% Cu, 193 ppm Mo, 2.35 g/t Ag from 246 m.
Drilling continues at Cobrasco, with three holes completed to date for 2609 m. CDH004 and CDH005 were completed to depths of 900 m and 934 m respectively, with assay results for CDH004 expected soon.
The drill rig was moved to a platform around 410 m NW of CDH005 and 390 m SW of CDH001. Surface reconnaissance along the northern extensions of the mineralized trend has confirmed outcrops of early-stage A-type stockwork veining and limonites after sulphides, over 1km from the area currently being drilled.
Sporadic gold mineralization was reported in CDH003, suggesting a possible gold rich intrusive phase within the broader Cobrasco system.
Andina Copper’s President and CEO Joseph van den Elsen said the assay results from the first drillhole validate Cobrasco as a globally significant Cu-Mo porphyry system and show potential for large tonnages of high-grade mineralization. He added that ongoing drilling is expected to further expand the multi-kilometer footprint of mineralization both northward and south along the well-defined structural corridor.
The 2025-26 field season is underway at Piuquenes and exploration is continuing at Cobrasco, with results from CDH004 expected soon. Follow-up exploration will also shortly commence at Mantau.
Assay results for CDH004 are expected shortly, with samples from CDH005 to be dispatched imminently to the ALS laboratory in Medellin. CDH006 has been mobilized and gradual step-outs will continue in a NW direction, testing the areas of known mineralization and enlarging the mineralization footprint laterally and vertically with increased drilling.
Drilling at Cobrasco was resumed on hole CDH003, previously suspended at 300.60 m by Rugby Resources in late 2022, and continued to a final depth of 774.80 m.
Significant copper mineralization continued to the end of hole, with an unconstrained interval of 0.37% Cu (0.44% CuEq) from surface to 774.80 m.
The central portion of the drill hole is characterized by an early rhyolite porphyry which exhibits strong magmatic-hydrothermal brecciation and is a preferred host for high-grade copper mineralization assayed in CDH003.
Mineralization at Cobrasco is controlled by multiple, recurrent hydrothermal events associated with the emplacement and subsequent progressive cooling of the intermediate to felsic porphyry intrusions, consistent with the evolution of a large porphyry system.
Strong A- and B-type early veining observed in multiple outcrops on the northern reaches of the concessions, are associated with Cu and Mo soil and rock geochemical anomalism. Veining associated with ubiquitous outcropping iron oxides after sulphides (limonites) and high copper rock grades (>0.5% Cu) was observed, confirming an extension of the rhyolite-dacite intrusive dome complex and known mineralization over a kilometer from the location of current drilling.
Such targets will be followed up in the short-term, in preparation of mobilizing a second drill rig.
Source: Andina Copper Corporation
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