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 the southern extensions of the Cobrasco system to a depth of 700 meters, in a large step-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 broad intervals.
The company'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.”
Drillhole CDH005 was collared from the same platform as holes CDH002, CDH003, and CDH004, oriented due south to test the southern extensions. The hole intersected mineralized diorite to dacite-andesite porphyries, differing from earlier holes that intersected a multi-phase quartz-rich rhyolitic to dacitic subvolcanic dome complex. The intermediate dacite-andesite units exhibit visually significant chalcopyrite-dominant sulphide mineralization, accompanied by weak to moderate sericite alteration overprinting earlier potassic assemblages.
The hole extended to a downhole depth of 934 meters, with the lower sections displaying epidote–chlorite alteration consistent with a propylitic assemblage, interpreted to represent the outer or lower zones of the hydrothermal system. The mineralization remains open to the south. Step-out drillholes CDH006 and CDH007 have been completed with assays pending, and new drillhole CDH008 is underway targeting the northern extension.
Drilling thus far has tested an area of approximately 1000 meters by 750 meters, less than half the potential footprint of 2500 meters by 1000 meters. The company plans to mobilize a second drill to systematically explore and define the lateral extents of the Cu-Mo system and to add volume to the higher-grade copper shells intersected to date. A systematic environmental baseline program has commenced across the project area.
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