Caracterización geológica y mineralógica de las vetas “San José” y “La Arenosa”, en la Mina Santa Marianita de la Parroquia Malvas, Cantón Zaruma Provincia de El Oro
Fecha
2019
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Facultad de Ciencias Naturales. Universidad de Guayaquil
Resumen
Este estudio se realizó con el objetivo de caracterizar la geología y mineralogía de las vetas “San José” y “La Arenosa” de la mina Santa Marianita de la parroquia Malvas, perteneciente al cantón Zaruma, Provincia de El Oro encontrada en la concesión minera Murciélagos-Vizcaya perteneciente a la empresa Minera Blacio Aguilar. Las estructuras mineralizadas en mención pertenecen al distrito minero Zaruma-Portovelo con dominio estructural de rumbo norte - sur y tendencia de buzamiento hacia el este. Se definió la paragénesis mineral gracias a análisis macroscópicos de muestras de mano, análisis microscópicos de láminas delgadas y secciones pulidas que determinaron la composición mineralógica para la respectiva interpretación y comparación entre ambas vetas, para su efecto se realizaron mapas geológicos a partir de mapas topográficos a escala 1:200 digitalizados en el software AUTOCAD. En las secciones pulidas se encontraron sulfuros, óxidos y carbonatos junto a indicadores geológicos que definieron al depósito como un yacimiento epitermal de baja sulfuración.
This study was carried out with the objective of characterizing the geology and mineralogy of the “San José” and “La Arenosa” veins of the Santa Marianita mine of the Malvas parish, belonging to the Zaruma canton, Province of El Oro found in the Murciélagos mining concession -Vizcaya belonging to the company Minera Blacio Aguilar. The mineralized structures in question belong to the Zaruma-Portovelo mining district with a structural dominance of a north - south direction and a tendency to dive to the east. Mineral paragenesis was defined thanks to macroscopic analysis of hand samples, microscopic analysis of thin sheets and polished sections that determined the mineralogical composition for the respective interpretation and comparison between both veins, for this purpose geological maps were made from topographic maps to 1: 200 scale digitized in AUTOCAD software. In the polished sections, sulphides, oxides and carbonates were found along with geological indicators that defined the deposit as a low sulfide epithermal deposit.
This study was carried out with the objective of characterizing the geology and mineralogy of the “San José” and “La Arenosa” veins of the Santa Marianita mine of the Malvas parish, belonging to the Zaruma canton, Province of El Oro found in the Murciélagos mining concession -Vizcaya belonging to the company Minera Blacio Aguilar. The mineralized structures in question belong to the Zaruma-Portovelo mining district with a structural dominance of a north - south direction and a tendency to dive to the east. Mineral paragenesis was defined thanks to macroscopic analysis of hand samples, microscopic analysis of thin sheets and polished sections that determined the mineralogical composition for the respective interpretation and comparison between both veins, for this purpose geological maps were made from topographic maps to 1: 200 scale digitized in AUTOCAD software. In the polished sections, sulphides, oxides and carbonates were found along with geological indicators that defined the deposit as a low sulfide epithermal deposit.
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MINERALOGÍA, RUMBO, BUZAMIENTO, PARAGÉNESIS, YACIMIENTO EPITERMAL