The Bolcana Cu–Au ore deposit (Metaliferi Mountains,Romania): first data on the alteration and related mineralisation |
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| Authors: | Viorica Milu Jacques L Leroy Patrice Piantone |
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| Institution: | 1. Department of Mineral Resources, Geological Institute of Romania, 1 Caransebes Str., 78344-Bucharest, Romania;2. UMR G2R, université Henri-Poincaré – Nancy-1, BP 239, 54506 Vandoeuvre-lès-Nancy cedex, France;3. BRGM, DR/REM, BP 6009, 45060 Orléans cedex 2, France |
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| Abstract: | The Bolcana ore deposit (Metaliferi Mountains, western Romania) is a porphyry ore deposit with associated epithermal veins. On the basis of different parageneses, four alteration types were distinguished: potassic, phyllic, argillic and propylitic. The mineralogical and geochemical data and estimated crystallisation temperatures of alteration minerals indicate an evolution of the system from an early period of porphyry type mineralisation (Cu+Au) to a late period of low-sulphidation epithermal mineralisation (Au+base metal). To cite this article: V. Milu et al., C. R. Geoscience 335 (2003). |
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| Keywords: | Cu–Au ore deposit porphyry-epithermal deposit hydrothermal alteration geothermometer Metaliferi Mountains Romania gisements de cuivre–or gisement de type porphyre-épithermal altérations hydrothermales géothermomètres monts Métallifères Roumanie |
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