Geochemical distribution and supergene behavior of indium at the Pingüino epithermal polymetallic vein system, Patagonia, Argentina

摘要: Abstract The Pinguino deposit, located in the low sulfidation epithermal metallogenic province of Deseado Massif, Patagonia, Argentina, represents a distinct deposit type for this region. It evolved through two different mineralization events: an early In-bearing polymetallic event that introduced In, Zn, Pb, Ag, Cd, Au, As, Cu, Sn, W and Bi, represented by complex sulfide assemblage, late Ag–Au quartz-rich veining crosscut overprinted mineralization. Three stages were identified within event. Iron-rich sphalerite second stage is major In carrier deposit. spatial distribution veins shows its maximum mean values Marta Centro Ivonne Norte veins, pattern similar to Zn distribution, showing close relation with unexposed Kasia intrusive complex. At vein scale, hypogene zone, associated variations temperature mineralizing fluids. vertical exhibits consistent both below above oxidation level, resembling behavior Pb therefore suggesting behaves as immobile element during weathering.