VETAS DE BARITINA EPITERMAL EN LAS MINAS AGUA BLANCA Y VOLCÁN, PUNA SALTEÑA

ORTEGA PÉREZ, MARÍA DE LAS MERCEDES; RUIZ, TERESITA DEL VALLE; ALONSO, RICARDO N.

Mar del Plata

Congreso; XII Congreso Argentino de Geología Económica; 2020

AAGE

EPITHERMAL BARITE VEINS IN AGUA BLANCA AND VOLCAN MINES, SANTA ROSA DE LOS PASTOS GRANDES, PUNA SALTEÑA. This article is about an interesting barite deposit in Agua Blanca and Volcan mines. They are located in the northwest of the Santa Rosa de los Pastos Grandes. Based on the studies carried out, it was possible to determine that the mines are made up of a main vein (with a thickness between 10 and 20 cm) and minor veins that penetrate the contact and affect host rock in some areas. The vein is located in a subvolcanic environment at the foot of Cerro Azufre, being part of the evolution of the El Quevar - Azufre volcanic complex, and mineralization is associated with hydrothermal fluids from the intrusion associated with this complex mixed with meteoric fluids during its ascent. It was possible to recognize a deposit of exceptional concentration of barium sulfate that appears with characteristics that can be classified as uncommon (in terms of color and textures present), associated with iron oxides and hydroxides, added to the recognition of minerals that still not mentioned for this mine: calcite (CaCO3), malachite (Cu2CO3 (OH) 2) / azurite (Cu3 (CO3) 2 (OH) 2), celestine (SrSO4), calcanthite (CuSO4 · 5H2O) and jarosite (KFe3 +3 (SO4) 2 (OH) 6).