Andina Copper’s Cobrasco Project Drilling Reveals Significant Southern Extension of Mineralization

Andina Copper Corporation has reported a significant drill intercept from hole CDH005 at its Cobrasco Project in Choco, Colombia, confirming a large-scale southerly extension of copper-molybdenum-silver mineralization. The hole, designed to test the southern extensions of the Cobrasco system to a depth of 700 meters in an area with limited geological data and no prior drilling, demonstrates a large multi-phase porphyry system with newly observed intermediate intrusive phases consistently mineralized over broad intervals.

Drilling has defined copper-molybdenum mineralization over a mostly near-surface zone within a 2500-meter by 1000-meter target area, with work thus far testing approximately 1000 meters by 750 meters—less than half the potential footprint. Step-out drillholes CDH006 and CDH007 have been completed with assays pending, while new drillhole CDH008 is underway targeting the northern extension of mineralization.

Joseph van den Elsen, President and CEO of Andina Copper, stated that ongoing drilling continues to demonstrate the large-scale and relatively shallow nature of Cobrasco Central, with results from hole CDH005 significantly extending the mineralized envelope to the south. ‘With broad spaced holes having tested less than half the target area to-date, we see the potential for a globally significant copper deposit(s) at Cobrasco,’ van den Elsen said. The company plans to mobilize a second drill to systematically explore and define the lateral extents of the copper-molybdenum system and add volume to higher-grade copper shells intersected to date.

Drillhole CDH005, collared from the same platform as previous holes and oriented due south, tested approximately 600 meters of lateral extent and 700 meters of vertical extent, terminating at 934 meters downhole. Unlike earlier holes that intersected felsic lithologies, CDH005 is characterized by mineralized diorite to dacite-andesite porphyries (intermediate lithologies) with visually significant chalcopyrite-dominant sulphide mineralization. The hole displayed continuity of intrusive phases, alteration styles, and sulphide mineralization throughout, with wide intercepts of moderate to high-grade copper mineralization associated with potassic alteration transitioning into early sericitic alteration.

The mineralization remains open to the south, and the large, strongly coincident copper-molybdenum surface geochemical anomaly being tested extends approximately 2.5 kilometers north-south and 900 meters east-west. A systematic environmental baseline program has commenced across the project area, to be followed by detailed geological mapping and further surface sampling to support ongoing drill targeting. The company’s corporate presentation is available at https://www.andinacopper.com/investors/presentations.

Francisco Montes, a qualified person under National Instrument 43-101, has verified the scientific and technical information forming the basis for this news release. Quality assurance and quality control procedures included core handling at the Cobrasco facility in Quibdo, with samples sent to the ALS preparation facility in Medellin and analyzed at the ALS laboratory in Lima, Peru. Mineralized intercepts reported for CDH005 applied a 0.2% copper cut-off and maximum dilution of 10 meters.

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