Caracterización mineralógica de las vetas del depósito polimetálico Pingüino, Macizo del Deseado.

JOVIC, SEBASTIÁN; GUIDO, DIEGO; DEL BLANCO, MIGUEL; BODAÑO, MARIANA; LORENTI BORDA, MARTÍN; JOVIC, NICOLÁS; SCHALAMUK, ISIDORO

Avances en mineralogía, metalogenia y petrología 2010

Editorial Fundación Universidad Nacional de Río cuarto

Lugar: Río cuarto, Cordoba; Año: 2010; p. 93 - 96

The Pingüino deposit, located 40 km northwest Cerro Vanguardia mine, has two different vein types: sulfide veins and quartz veins. The sulfide veins are characterized by three different pulses: the first (S1) composed by arsenopyrite, pyrite, chalcopyrite, quartz, cassiterite, wolframite and Sn sulfides (ferrokersterite and stannite); the second (S2) is manly composed by sphalerite and galena with tetrahedrite, freibergite and Sn-Ag sulphosalts. The third pulse (S3) is integrated by sphalerite and greenockite with banded botroidal textures. The quartz veins have also three pulses: The first quartz pulse (Q1) is integrated by grey quartz with pyrite, galena, sphalerite, and various Ag-bearing minerals: argentite, silver, ruby silver, freibergite, and naumonite; The second pulse (Q2) is characterized by banded Fe-Mn carbonates and quartz; The last pulse (Q3) is composed by white quartz with comb and breccia texture. The polymethalic sulfide veins have Cu, Au, As, Sn, W, Bi, Zn, In, Pb, Ag, Cd y Sb anomalies, representing a complex polimetalicmineral paragenesis. The most important elements in the polymetallic sulfide veins are Au, Ag (in oxidized zone mostly as native elements) and Au, Ag, Zn, Pb and In in the primary zone, related with sphalerite, galena, tetrahedrite and greenockite. In the quartz veins, Au and Ag are the most important metals, which appear as native elements or electrum in the oxidized zone, and as As-pyrite and/or arsenopyrite (Au), and as freibergite, ruby silver and acantite (Ag) in the primary zone.