Mineralización epitermal en el sector El Barril, Macizo del Deseado, provincia de Santa Cruz

GONZALEZ GUILLOT, M.; DEL BLANCO, M.; GUIDO, D.; GANEM, F.; CÁBANA, C.

Río Cuarto

Congreso; VII Congreso de Mineralogía y Metalogenia (Minmet); 2004

Two sets of mineralizations were identified in El Barril property (San Jorge Minera S. A.). The northernmost one is located in the same structure that contains Mina Martha epithermal vein (Ag-Au), five kilometers to the east. This set is also divided into two zones (eastern and western) on the basis of metallogenical and textural characteristics. The western zone has higher grades in Au, Ag, Cu, Pb and As, whereas the eastern zone is richer in Hg and carbonates (or its pseudomorphs). This facts would reflect an structural higher position within the system for the western zone respect to the eastern one, and even for both when compared with the neighboring Martha vein, thus increasing the mining potential for El Barril. The presence of adularia as a gangue mineral and carbonate pseudomorphs, the scarcity of sulfides observed and textures suggest a low sulfidation state for this deposit.