 | | Journal (article/letter/editorial) | | 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...tetrahedrite.Richorescontain102to 10• ppmTe, mainly in hessite(Ag2Te).The Mn stageisfollowedby twoquartz-richsubstages;...ut50 percentof the precious metal valuesof the Calera system.Late quartz and sphalerite+ galenaveinswith |  | 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 |  | | Journal (article/letter/editorial) | | epithermal gold deposits, Cirotan (Indonesia), Orcopampa (Peru) and Cavnic (Romania). In these deposits, the...2.6 wt% NaCl eq., the final comb quartz from Orcopampa excepted. Two isenthalpic boiling events are recorded...fluid inclusions, boiling, Cirotan, Indonesia, Orcopampa, Peru, Cavnic, Romania. SOMMAIRE Les minéraux de...faible teneur en soufre, Cirotan (Indonésie), Orcopampa (Pérou) et Cavnic (Roumanie). Dans ces gisements...éq. NaCl (exception faite du quartz terminal à Orcopampa). Deux épisodes d’ébullition (isoenthalpique) |
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