Andina Copper Corporation (TSX-V: ANDC | FSE: FIR | OTCQB: PMMCF) has reported assay results from diamond drillholes PIU12 and PIU13 at the Piuquenes North target in San Juan, Argentina, confirming a new porphyry copper-gold discovery. The drilling targeted a large magneto-telluric (MT) geophysical anomaly identified in the company's 2026 survey program.
Drillhole PIU13 returned 468 meters grading 0.50% copper, 0.30 g/t gold, and 3.04 g/t silver from 700 meters depth, including a higher-grade interval of 164 meters at 0.70% copper, 0.44 g/t gold, and 4.19 g/t silver from 924 meters. Mineralization is hosted within a multiphase porphyry system intersected between 664 and 1,168 meters downhole, characterized by an intense quartz vein stockwork and potassic alteration with chalcopyrite and bornite. Gold is a significant co-product, with lesser silver.
Drillhole PIU12, collared approximately 600 meters east-northeast of PIU13, intersected shorter intervals of mineralization within a pre-mineral porphyry, interpreted to be on the periphery of the system. It returned 14 meters at 0.38% copper, 0.12 g/t gold, and 1.81 g/t silver from 864 meters. The two holes tested only a fraction of the MT anomaly, which measures approximately 800 by 700 meters and remains open in all directions.
The Piuquenes North discovery adds to the previously identified Piuquenes Central and Piuquenes East systems, all located immediately north of Aldebaran Resources Inc.'s Altar copper-gold porphyry project. Other regional projects include El Pachon (Glencore) 30 km south, the Los Pelambres copper mine in Chile, and Los Azules (McEwen Copper) 50 km northeast.
The company plans to integrate results into a refined geological model and design a follow-up drill program targeting down-dip and along-strike extensions. The MT anomaly remains largely untested, with priority given to the north-northeast continuation and depth extent.
For more information, see the original press release and the company's corporate presentation.
