The Angélica copper deposit is situated at the southernmost sector of the Jurassic Tocopilla plutonic complex in the North Chilean Coastal Cordillera. This deposit occurs in monzonitic to monzodioritic rocks, and has platelike orebodies with no appreciable hydrothermal alteration nor sulfi de mineralization. The mineralized zones are located in the western side of the two main normal faults with NE and NW orientations, and are characterized principally by impregnation of supergene copper products of atacamite and minor amounts of chrysocolla, lavendulan and "black copper". Generally, chrysocolla is more abundant at a distal NE sector of the deposit. The black copper is Cu-Fe-Mn-Si-Cl-rich multimineral aggregates composed of atacamite with minor amounts of quartz, pseudomalachite, dioptase, neotocite, gypsum, paratacamite and melanothallite, and its surface exhibits nanometer-sized cylindrical morphologies. All these characteristics suggest an exotic origin for the Angélica copper deposit. A few vein-type copper deposits situated at the southwestern sector along the NE-oriented fault are inferred as the possible source of the Angélica copper deposit.
Este artículo tiene como objetivo mostrar el nivel de competitividad que tiene Chile en los productos destacados de su industria pesquera y acuícola, analizando su evolución entre los años 2008 y 2019. Para esto se caracterizó el mercado exportador de este sector para el país objetivo, como también el mercado internacional de esta industria. Posteriormente, mediante el uso del índice de ventajas comparativas se calcula el nivel de competitividad de Chile y su competencia, considerando las ventajas o desventajas de las exportaciones e importaciones del país estudiado con respecto al resto del mundo. Se analizan los ocho productos con mayor desempeño exportado concluyendo que Chile posee ventajas comparativas en cinco de estos.
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