“Caracterización Geológica - Estructural de las labores mineras subterráneas de la Sociedad “El Mirador”, Distrito Minero Chinapintza, Provincia de Zamora Chinchipe”.
The structural geological characterization and alterations of the underground mining working of the Society "El Mirador" code 1909038, Chinapintza Mining District, located in the Cordillera del Condor, Paquisha canton, province of Zamora Chinchipe, in the category of small-scale mining was...
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| Natura: | bachelorThesis |
| Lingua: | spa |
| Pubblicazione: |
2024
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| Accesso online: | https://dspace.unl.edu.ec/jspui/handle/123456789/29209 |
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Aggiungi Tag | Riassunto: | The structural geological characterization and alterations of the underground mining working of the Society "El Mirador" code 1909038, Chinapintza Mining District, located in the Cordillera del Condor, Paquisha canton, province of Zamora Chinchipe, in the category of small-scale mining was carried out in this investigation, to determine the geochemical and mineralogical association of the veins of economic interest, and their correlation with the structures through the representation of a mineralisation distribution model, based on the predominant structural control in the study area. The deposit is presented as a vetiform system, characterised as a low sulphidation epithermal type deposit. The results reveal that it is an igneous intrusive environment formed by granodiorite described in the Zamora Intrusive Complex as the basement of this Jurassic age zone, a post-complex volcanic event was described consisting of rhyolites and hydrothermal breccias identified in the Congüime Unit. The minerals of the veins of economic interest analysed in the polished sections show pyrite, chalcopyrite, sphalerite, galena, arsenopyrite, gold interpenetrated in chalcopyrite. The geochemical association evidences auriferous concentrations from 0.29 gr/t to 10.98 gr/t, these structures have a NW - SE directional trend, with Au - Ag - Cu - Pb - Zn - As ore. All the information was represented in a geological map at 1:1000 scale, the underground geological mapping was done at 1:500 scale of two galleries called Combo and Julia respectively, which resulted in 5 potential gold enrichment zones for opening new mining fronts. Keywords: structural geological, ore, gangue, chalcopyrite, sphalerite, Chinapintza vein system. |
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