Andina Copper Confirms New Porphyry Copper System at Piuquenes North
Andina Copper Corp. has intersected a multiphase porphyry copper system at the Piuquenes North target, confirming a third mineralized porphyry system on the property and expanding the exploration potential in San Juan, Argentina.
Andina Copper Corp. has confirmed the discovery of a new porphyry copper system at its Piuquenes North target in San Juan Province, Argentina, after completing two diamond drill holes that intersected multiple intrusive phases with copper sulphide mineralization. The results mark a significant milestone for the company, demonstrating the presence of a third mineralized porphyry system on the 2,500-hectare property.
The drill program targeted a large, deep-seated low-resistivity Magnetotelluric (MT) geophysical anomaly measuring approximately 800 metres by 700 metres. Holes PIU12 and PIU13 were completed to depths of 992.60 metres and 1,235 metres, respectively, and both intersected porphyry-style copper mineralization within a newly identified intrusive complex. The strongest visible mineralization was observed in PIU13 between 848 metres and 1,045 metres downhole, hosted within an early mineral porphyry phase. Copper sulphide minerals, including chalcopyrite and bornite, were logged throughout the interval, occurring in quartz veins and as disseminations associated with potassic alteration.
President and CEO Joseph van den Elsen stated: “Confirmation of a third mineralized porphyry system at Piuquenes North marks an important milestone for the project and further demonstrates the significant exploration potential of the Piuquenes property.” He also noted that the MT anomaly remains open to the north and at depth, indicating potential for further expansion.
Drill hole PIU12 confirmed the lateral extent of the system, intersecting andesitic host rocks intruded by pre-mineral porphyry dykes containing chalcopyrite and minor bornite. The company believes the elevated sulphide content observed is a key contributor to the conductive low-resistivity response defined by the MT survey, showing a strong correlation between the geophysical anomaly and copper mineralization.
Assay results for both holes are pending. Upon receipt, Andina Copper will integrate the data with geological logging to update the geological model and refine targeting for follow-up drilling, expected to focus on down-dip and along-strike extensions. During the off-season, the company plans to conduct laboratory resistivity and chargeability measurements on core samples to further refine geophysical interpretations.
The Piuquenes project is part of Andina Copper’s portfolio of copper assets along the Andean porphyry belt. The company also holds the Cobrasco Project in Colombia and a target in Chile. The company is listed on the TSX Venture Exchange (TSXV:ANDC), Frankfurt (FSE: FIR), and OTC (OTCQB: PMMCF).
Gustavo Zulliger, a Qualified Person under NI 43-101, has reviewed and approved the technical information. The company’s corporate presentation is available at Andina Copper Corporate Presentation.