Revista de la Asociación Geológica Argentina
versión impresa ISSN 0004-4822
MUGAS LOBOS, Ana Cecilia; MARQUEZ-ZAVALIA, María Florencia y GALLISKI, Miguel Ángel. Ore minerals from Don Sixto, a low sulfidation epithermal deposit from Mendoza. Rev. Asoc. Geol. Argent. [online]. 2012, vol.69, n.1, pp. 3-12. ISSN 0004-4822.
The Don Sixto mining project is a low sulfidation Au-Ag deposit, with a gold resource close to 900,000 ounces, located in the San Rafael Massif, in the SE of Mendoza province. Recently, it was found a precious-metal mineral association including uy-tenbogaardtite, stromeyerite, naumannite, acanthite, polybasite, stützite and cervelleite. These minerals are scarce and are commonly related to gold and silver of variable fineness, disseminated in hydrothermal quartz veins and volcanic-pyroclastic rock units from the Choiyoi and El Portillo Group. The most common mineral is pyrite associated with subordinated arsenopyrite, chalcopyrite, sphalerite, magnetite and hematite; lesser amounts of pyrrhotite, galena, marcasite, bornite, boulangerite, chalcocite, digenite and covellite were also recognized. This is the first mention in Mendoza province for uytenbogaardtite, stützite, cervelleite and polybasite.
Palabras clave : Selenides; Tellurides; Acanthite; Polybasite; Uytenbogaardtite.