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

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

Río Cuarto

Congreso; Congreso de Mineralogía y Metalogenia; 2004

Two sets of mineralizations were identified in El Barril property (SanJorge Minera S. A.). The northernmost one is located in the same structure that contains MinaMartha 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 a structural higher position within the system for the western zone compared to the eastern one, and 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 model for this deposit.