| MultistageEvolutionof the CaleraEpithermalAg-Au Vein System, OrcopampaDistrict, SouthernPeru: First Results...bordersthe vein at depth and yieldslaterallyto sericite-richrock within a few metersof the vein, whereasalteredwall...whereasalteredwall rockwith abundantsericitebordersthe vein in upperlevels.Earlystagematerialis cut andbrecciatedby...ut50 percentof the precious metal valuesof the Calera system.Late quartz and sphalerite+ galenaveinswith...found preferentiallyin a zone of intersectionof vein splitsthat appearsto have controlled fluidflow. |
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Gibson, Peter Craig, Noble, Donald C., Benavides, Raúl G., Mayta, Oscar T. (1993) Discovery, Development, and Production of a Blind Ag-Au Bonanza in the Calera Vein, Orcopampa District, Peru. International Geology Review, 35 (9) 780-796 doi:10.1080/00206819309465557 |
Journal (article/letter/editorial) |
| of a Blind Ag-Au Bonanza in the Calera Vein, Orcopampa District, Peru a a b Peter Craig Gibson , Donald...of a Blind Ag-Au Bonanza in the Calera Vein, Orcopampa District, Peru, International Geology Review, 35:9...of a Blind Ag-Au Bonanza in the Calera Vein, Orcopampa District, Peru 1 P E T E R C R A I G G I B S O...Villaran 790, Urbanization Santa Catalina, Lima 13, Peru Downloaded by [University of Montana] at 11:04...veins of the adularia-sericite type in the Orcopampa district were worked during Spanish times and since |
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