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Título: Silver, gold, and base metals vein systems at southern part of Cordillera del Viento, Neuquén, Argentina
Autor(es): Pons, María Josefina
Giacosa, Raúl Eduardo
Greco, Gerson Alan
González, Santiago Nicolás
Dicaro, Sebastián
Conedera, Manuel
Nimis, Paolo
Bordese, Sofía
Fecha de publicación: mar-2022
Revista: XXI Congreso Geológico Argentino
Resumen: The Andacollo district, the most important metalliferous mining district of the Neuquén province, extends over 220 km2 with more than 56 Au, Ag and base metal (Cu, Pb, Zn) veins. This work is focused on cerro Las Minas and San Pedro areas, located at the south periclinal zone of the Cordillera del Viento anticline (CVA). Previous studies (Giacosa 2011, Strazzere et al. 2017 and references there in) have proposed that mineralization in this area is the result of at least two hydrothermal events of Carboniferous-Middle Triassic? and upper Cretaceous-Paleogene age. Here, we present new structural, geochronological, mineral chemistry (EDS and microprobe analyses), and textural data of the altered host-rocks and the mineralized structures of the two main vein systems (Buena Vista-San Pedro group, BVSPG, and Sofía-Torreón group, STG) in the district. Based on this data, we define new characteristics of the hydrothermal systems and constrain the mineralization events in the framework of the tectonic evolution of the area.
URI: http://rid.unrn.edu.ar/handle/20.500.12049/8620
Otros enlaces: https://cga2022.com/files/LIBRO%20DE%20ACTAS%20XXI%20CGA%202022.pdf
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