Andina Copper Corporation (TSX-V: ANDC | FSE: FIR | OTCQB: PMMCF) has reported an outstanding drill intercept from hole CDH005 at its Cobrasco Project in Choco, Colombia. The hole was designed to test southern extensions of the Cobrasco system to a depth of 700m, stepping out over an area with limited geological data and no prior drilling. The results confirm a large-scale southerly extension of copper-molybdenum-silver mineralization, demonstrating a multi-phase porphyry system with consistently mineralized intermediate intrusive phases over broad intervals.
Drillhole CDH005 was collared from the same platform as previous holes CDH002, CDH003, and CDH004, oriented due south to test approximately 600 m of lateral extent and 700 m of vertical extent, terminating at 934 m. Unlike earlier holes that intersected felsic lithologies, CDH005 encountered mineralized diorite to dacite-andesite porphyries (intermediate lithologies), transitioning from magnetic intrusive sequences at surface to a magnetic low at depth. The intermediate units are intruded by narrow quartz-rich felsic rhyolite subvolcanic intrusions. The hole intersected visually significant chalcopyrite-dominant sulphide mineralization with weak to moderate sericite alteration overprinting earlier potassic assemblages.
The dacite-andesite units extend to approximately 630 m downhole, where a younger intermineral rhyolite porphyry continues to the end of hole. The lower sections display epidote-chlorite alteration consistent with a propylitic assemblage, interpreted as outer or lower zones of the hydrothermal system. The mineralization remains open to the south. Notably, CDH005 did not intersect phreatomagmatic breccias observed in previous holes, which had defined the southwest limits of the Cobrasco Central system.
Andina Copper’s President and CEO Joseph van den Elsen commented: “Ongoing drilling at Cobrasco 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.” To accelerate exploration, a second drill will be mobilized to systematically explore lateral extents and add volume to higher-grade copper shells.
The company has completed step-out drillholes CDH006 and CDH007 (assays pending) and is underway with CDH008 targeting the northern extension. Systematic drilling has defined Cu-Mo mineralization over a mostly near-surface zone (upper 650m) within a 2500m x 1000m target area, with drilling to date testing approximately 1000m x 750m. The large soil anomaly extends 2.5 km north-south and 900 m east-west, supported by rock chip geochemistry, geological mapping, and geophysical data. A systematic environmental baseline program has commenced to support ongoing drill targeting.
For more details, refer to the Company’s Corporate Presentation at Andina Copper Corporate Presentation. Interested parties can subscribe to the mailing list or follow social media channels via Mailing List.
