In Rio Negro province, Argentex holds 100% mining rights to 18 prospective properties totaling 175,000 acres (70,820 hectares). The properties are in the Los Menucos epithermal silver-gold region of the Somuncura Massif located approximately 620 miles (1,000 kilometers) southwest of Buenos Aires.

Although at an earlier stage of exploration, the regional geological setting of the emerging gold area of Somuncura Massif, where the Argentex claims are located, is geologically similar to the Deseado Massif in Santa Cruz.

The company's claims in this area cover prospective geology (Permo Triassic aged volcanics) noted for hosting epithermal silver-gold occurrences. Argentex has created value on this originally unexplored real estate, identifying two significant and separate gold discoveries. Visible gold has been discovered in highly oxidized outcrops but extents of the mineralization remain open ended and untested by trenching or drilling.