Andina Copper Drills New Porphyry System at Piuquenes North

Andina Copper Corp. announced that its first two drill holes at the Piuquenes North target in San Juan Province, Argentina, have successfully intersected a new porphyry copper system, confirming the presence of significant copper sulphide mineralization within a large Magnetotelluric (MT) geophysical anomaly. The holes, PIU12 and PIU13, were drilled to depths of 992.60m and 1,235m, respectively, and both encountered multiple intrusive phases with visible chalcopyrite and bornite mineralization. Notably, PIU13 intersected four porphyry intrusive phases, with the strongest copper sulphide mineralization observed between 848m and 1,045m downhole, hosted within an early mineral porphyry phase. The Company believes these results demonstrate a strong correlation between the MT anomaly and copper mineralization, with the anomaly remaining open to the north and at depth. Assay results for both holes are pending, and the Company plans to integrate the data into an updated geological model for follow-up drilling. Joseph van den Elsen, President and CEO, emphasized that this confirmation of a third mineralized porphyry system at Piuquenes marks an important milestone, highlighting the significant exploration potential of the 2,500-hectare land package. The Company also continues rapid exploration at the Cobrasco Project in Colombia. For more details, refer to the News Release dated February 10, 2026.

Drill hole PIU13, completed at an azimuth of 50 degrees and dip of minus 70 degrees, intersected andesitic volcanic host rocks from 0 to 665m, followed by pre-mineral and early mineral porphyry phases from 665m to 1,045m, where the strongest mineralization was observed. Below 1,050m, intermineral and late mineral porphyry phases were encountered, with varying alteration and mineralization styles. Hole PIU12, drilled at an azimuth of 255 degrees and dip of minus 70 degrees, confirmed the lateral extent of the porphyry system, intersecting andesitic host rocks intruded by pre-mineral porphyry dykes with chalcopyrite and trace bornite. The Company noted that the elevated sulphide content in drilling is a significant contributing factor to the conductive low-resistivity response defined by the MT survey. Follow-up drilling is expected to focus on down-dip and along-strike extensions of the newly intersected porphyry system. The Company's Corporate Presentation is available at Andina Copper Corporate Presentation.

This discovery is a critical step for Andina Copper as it validates the use of MT geophysics in targeting deep-seated porphyry systems, a technique that could be applied to other underexplored regions. The Piuquenes North target was previously untested, and the intersection of a well-developed porphyry system underscores the project's potential to host a significant copper resource. With assay results pending, the market will be closely watching for grade and thickness data. The Company's dual focus on Argentina and Colombia, including the Cobrasco Project, positions it as a key player in South American copper exploration. The success at Piuquenes North could attract further investment and joint venture interest, particularly given the global demand for copper in the energy transition.