Estudio mineralógico y paragenético de dos estructuras vetiformes dentro de la sociedad minera guayacán, ubicada en la concesión minera Bella Rica, cantón Camilo Ponce Enríquez.

Abstract

Abstract: This study aimed to characterize the mineralogy and paragenesis of two vein structures within Sociedad Minera Guayacán, located in the Bella Rica mining concession, Camilo Ponce Enríquez Canton. Six mineralized samples were analyzed, including three from the Pozo vein and three from the Sol vein, using macroscopic characterization, reflected-light microscopy of polished sections, X-ray diffraction, and X-ray fluorescence applied to one representative sample from each vein. The results revealed mineralogical differences between the two structures. The Pozo vein is dominated by pyrite and clinochlore, accompanied by chalcopyrite, arsenopyrite, and tentatively identified magnetite, whereas the Sol vein contains an assemblage composed mainly of quartz, calcite, arsenopyrite, sphalerite, galena, and pyrite. Based on these data, a comparative paragenetic sequence consisting of three stages igneous, hydrothermal, and alteration was established. Overall, the results indicate that the two veins represent distinct mineralogical domains within an andesitic host rock, although the relative crystallization sequence of the sulfides and the timing of the alteration processes require further investigation.