Andina Copper Corporation (TSX-V: ANDC | FSE: FIR | OTCQB: PMMCF) has confirmed a new copper-gold porphyry discovery at its Piuquenes North target in San Juan, Argentina. The company released assay results from drillholes PIU12 and PIU13, which tested a large magneto-telluric (MT) geophysical anomaly identified during its 2026 survey program.
Drillhole PIU13, the discovery hole, returned 468 meters grading 0.50% copper, 0.30 g/t gold, and 3.04 g/t silver from a depth of 700 meters. Within this interval, a higher-grade zone of 164 meters graded 0.70% copper, 0.44 g/t gold, and 4.19 g/t silver from 924 meters. The mineralization is hosted in a multiphase porphyry system intersected between 664 and 1,168 meters downhole, characterized by intense quartz vein stockwork and potassic alteration with chalcopyrite and bornite—consistent with a high-temperature porphyry core.
Drillhole PIU12, located approximately 600 meters east-northeast of PIU13, intersected shorter intervals of mineralization, including 14 meters grading 0.38% copper and 0.12 g/t gold, interpreted as the periphery of the mineralized system. The MT anomaly, measuring about 800 by 700 meters, remains largely untested. Both holes only tested a small portion of the geophysical target, which trends north-northeast and remains open in all directions.
Andina Copper’s President and CEO Joseph van den Elsen emphasized the significance of the discovery: “High-grade Cu-Au values from PIU13 confirm a new discovery, proximate to the high-grade, near surface Cu-Au mineralization at Piuquenes Central. Only a fraction of the large geophysical anomaly at Piuquenes North has been tested, and we are designing the next phase of drilling to expand on what is potentially a significant new porphyry discovery.”
Piuquenes North is the third porphyry centre identified in the Piuquenes district, joining the previously reported Piuquenes Central and Piuquenes East systems. The district lies immediately north of Aldebaran Resources Inc.’s Altar copper-gold porphyry project and is part of the San Juan Miocene porphyry belt, which hosts major deposits such as Glencore’s El Pachon, Antofagasta’s Los Pelambres mine in Chile, and McEwen Copper’s Los Azules project.
The company plans to integrate assay results into a 3D geological model to design follow-up drilling targeting the down-dip and along-strike extensions of the new porphyry system. Priority will be given to testing the north-northeast continuation and depth extent of the MT anomaly.
For further details, Andina Copper’s corporate presentation is available at Andina Copper Corporate Presentation. Latest news and releases can be found on the company’s Mailing List and social media channels.
