CADIC   02618
CENTRO AUSTRAL DE INVESTIGACIONES CIENTIFICAS
Unidad Ejecutora - UE
capítulos de libros
Título:
Styles, mineralogy and textures of the Arroyo Rojo polymetallic massive sulphide prospect, Tierra del Fuego (Argentina)
Autor/es:
BIEL, C.; SUBÍAS, I.; FANLO, I.; MATEO, E. & ACEVEDO, R.D.
Libro:
Digging deeper : Proceedings of the Ninth Biennial of the Society for Geology Applied to Mineral Deposits
Editorial:
The Society for Geology Applied to Mineral Deposits. Irish Association for Economic Geology
Referencias:
Lugar: Dublín, Irlanda; Año: 2007; p. 1081 - 1084
Resumen:
The Arroyo Rojo Zn-Cu-Fe prospect is a massive sulphide body hosted by a submarine volcano-sedimentary sequence. Sulphides are comprised of pyrite, occurring as porphyroblasts, in a layered matrix of sphalerite with minor chalcopyrite and galena. A hanging wall sulphide assemblage is marked by the presence of pyrite disseminated in shale matrix with minor sphalerite and rare chalcopyrite and galena in volcanic matrix. Types of hydrothermal alteration identified in the deposit include sericite, chlorite-epidote, and silica. Ore petrography has revealed primary and secondary textures product of deformation and remobilization during low-grade regional metamorphism. The available data allow us to suggest that the deposit is result of stratabound replacement of rhyolites and black shales.