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Geology of the “Round Mountain” gold mine in Nevada, United States of America, and potential for exploration of similar deposits in the Andes

Geología de la mina de oro “Round Mountain” en Nevada, Estados Unidos de América y potencial de exploración de yacimientos similares en los Andes

Author: Alberto Lobo-Guerrero S.

Download complete PDF file of abstract here >
Download complete PDF file of presentation here >
Download complete 14 page PDF paper in Spanish>
Download complete 19 page PDF paper in Spanish>

Related publication on exploration for sandwich-style epithermal mineralization (No. 10) >
Related publication on exploration for low sulfidation veins in tropical environments (No. 9) >
Related publication on exploration for low sulfidation veins in arid environments (No. 26) >
Other downloadable documents related to economic geology >

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SYNOPSIS
Round Mountain is one of the world’s largest volcanic rock-hosted gold deposits, of the disseminated, low-sulfidation epithermal type. This article offers a brief version of the mine’s more relevant issues and some comments on the exploration of similar deposits in the Andean Cordillera. Round Mountain’s reserves amount to more than 500 tons of metallic gold.
Permeable pyroclastics bound by impermeable rocks host mineralization and alteration.
Mineralizing fluids migrated along concentric and radial fractures related to a caldera.
Mineralization and alteration processes took significantly less than 500,000 years. Case studies in Quaternary to upper Tertiary volcanic edifices in the Colombian, Ecuatorian and Peruvian Andes contain disseminated gold mineralization in porous-permeable pyroclasts bound by impermeable lavas and/or welded tuffs.


SINOPSIS
Round Mountain es uno de los yacimientos de oro más grandes del mundo alojados en rocas volcánicas, del tipo diseminado epitermal de baja sulfuración. El artículo presenta un resumen de las principales características de la min, y comentarios sobre la exploración de yacimientos similares en la Cordillera Andina. Las reservas de Round Mountain ascienden a más de 500 toneladas de oro metálico.
Piroclastos permeables limitados por rocas impermeables sirven para alojar la mineralización y alteración hidrotermal.
Los fluidos mineralizantes migraron a lo largo de fracturas concéntricas y radiales asociadas con una caldera.
Los procesos de mineralización y alteración duraron menos de 500,000 años.
Estudios de caso en edificios volcánicos del Cuaternario al Terciario Superior en los Andes de Colombia, Ecuador y Perú contienen mineralización diseminada de oro en piroclastos porosos-permeables limitados por lavas impermeables o tobas soldadas.

 
 
  Download complete PDF file of abstract here >
Download complete PDF file of presentation here >
Download complete 14 page PDF paper in Spanish>
Download complete 19 page PDF paper in Spanish>

Related publication, exploration for sandwich-style epithermal mineralization (No. 10) >
Related publication, exploration for low sulf. veins in tropical environments (No. 9) >
Related publication, exploration for low sulf. veins in arid environments (No. 26) >
Other downloadable documents related to economic geology >
   
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