Caracterización paragénetica de las vetas azul, amarilla y miranda del Frente Montesdeoca de la mina Miranda del distrito aurífero polimetálico Zaruma-Portovelo

Abstract

Abstract: This research aims to study the paragenetic and its correlation with the Azul, Amarillaand Miranda veins of the Montesdeoca front located in the Concesión Minera MIMOPI in the Zaruma Portovelo Polymetallic Gold District. It could be determined the geological characteristics that revealed mineralized structures when performing detailing analyses as: the type of lithology, textures and geomechanical conditions of the wall rock; mineralogy, structural and chemical analyses. metal zoning and calculation of theaverage grades for gold through fire tests. The study also includes Farallón ́s vein, considering that it is part of a system in the gallery. It was determined that the wall rock is comprise of volcanic origins of the andesitic type with an intermediate tendency affected in a greater proportion by alterations of the propylitic and argillic type. The primary textures developed by the silica in the veins such as the crustiform in coloform bands which are typical in this type of hydrothermal deposits. Structures such as reverse faults and joints are part of the echelón-type system of the Zaruma Portovelo District, proposed by Bonilla (2009)