Argentina Metals' lead copper-gold project on the 146,728-hectare Western Malargüe land position. Surface geochemistry and a property-scale magnetometric survey have defined targets in two distinct zones.
December 2025 field program
The initial exploration work carried out in Las Estrellas in December 2025 identified a large area occupied by volcanic rocks of andesitic-basaltic composition. Geological mapping, ground-based magnetometry and sampling were carried out throughout the property area.
The four highest-copper samples cluster in a single target zone in the northern sector of the property.
| Threshold | Value |
|---|---|
| Samples > 50 ppm Cu | 17 |
| Samples > 100 ppm Cu | 5 |
| Peak (G2R-287) | 6,673 ppm Cu |
| Peak (G2R-271) | 9,978 ppm Cu |
| Total samples collected | 144 rock / 14 stream |
Surface geochemistry and ground magnetometry produced three property-scale plates that together frame the discovery case: copper and silver from rock chip sampling, alongside the magnetic signature of the underlying intrusive bodies.
Two distinct interpretations emerge along the property: a mineralised target in the north, and the periphery of a porphyry system in the south.
In the northern part, there is a potential mineralized zone that would correspond to the El Burrero mine model: a volcanic mantle-type deposit of copper and silver, with some indications of a possible skarn or IOCG as well.
In the southern part, geochemistry indicates a peripheral zone of a porphyry copper system: relatively high values of arsenic and lead, and low values of copper and molybdenum.