Andina Copper Corporation (TSX-V: ANDC | FSE: FIR | OTCQB: PMMCF) has reported outstanding drill intercepts from its Cobrasco Project in Choco, Colombia, further confirming the northwest extension of the Cobrasco Central copper-molybdenum (Cu-Mo) porphyry system. The results highlight the project's potential to host a large mineralized system.
Drillhole CDH008 was completed to a depth of 652.25 meters and returned 272 meters @ 0.50% Cu, 75 ppm Mo, and 1.92 g/t Ag from 52 meters downhole, including 152 meters @ 0.67% Cu, 68 ppm Mo, and 1.90 g/t Ag from 54 meters. The near-surface mineralization begins at approximately 52 meters and is associated with multiple mineralized porphyry phases and related magmatic-hydrothermal breccias. This hole was drilled due north to test the northern continuity of the shallow mineralized zone at Cobrasco Central.
Two additional drillholes have been completed from the same platform: CDH009 (completed, assays pending) and CDH010 (in progress). These step-out holes are testing northwest and west-southwest extensions to mineralization, respectively. Visual logging indicates sulphide mineralization consistent with the broader Cobrasco Central system in both holes.
The Cobrasco mineralized footprint now extends approximately 1,100 meters along strike and 550 meters laterally, expanding with each successive drillhole. Mineralization remains open in all directions, with further expansion potential toward the northwest and west-southwest, pending results from CDH009 and CDH010. Ongoing scout drilling continues, with further large step-out holes targeting the northwest and northern extensions planned.
Andina Copper’s President and CEO Joseph van den Elsen commented: “We continue to systematically advance a wide-spaced scout drilling programme, actively testing the limits of the Cobrasco system with wide fans of significant step-out drillholes. The system continues to grow with each successive drillhole, with the mineralization footprint already covering an area of ~1,100m x 550m, and results from CDH009 and CDH010 expected to further extend. Surface geochemistry and field observations strongly suggest that the mineralization continues to the north and northwest and indeed remains open in all directions. Preparations are being made for the mobilization of a second diamond drilling rig to support the next phase of definition drilling of Cobrasco Central and new porphyry centers still to be tested.”
Geological logging of CDH008 revealed a leached cap with intense supergene alteration over intermineral rhyolite porphyry. Below the leached zone, a 30-meter interval containing chalcocite coating hypogene sulphides suggests incipient secondary copper enrichment. The upper portion comprises sericite-altered intermineral rhyolite porphyry intruding dacite-andesite porphyry, with early quartz veins containing disseminated chalcopyrite and pyrite. Stronger mineralization is associated with potassic and sericite-altered magmatic-hydrothermal breccias, where chalcopyrite occurs as matrix infill and thin cross-cutting veinlets. Bornite was locally observed, possibly indicating a later higher-sulphidation event.
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The qualified person for this news release is Francisco Montes, a consultant of Andina Copper Corp and a member of the Australian Institute of Geoscientists. He has reviewed and approved the technical information contained in this release.
