Constraints on the ore fluids in the Sando Alcalde AuAg epithermal deposit,southwestern Peru: fluid inclusions and stable isotope data |
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| Authors: | Anne-Sylvie André-Mayer Laurent Bailly Catherine Lerouge Alain Chauvet Jacques Leroy Éric Marcoux |
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| Affiliation: | 1. UMR CNRS 7566 G2R, université Henri-Poincaré, BP 239, 54506 Vandoeuvre-lès-Nancy cedex, France;2. BRGM, REM/MESY, av. Claude-Guillemin, BP 6009, 45060 Orléans cedex 2, France;3. Laboratoire « Dynamique de la lithosphère », Isteem, université Montpellier-2, CC 60, 34095 Montpellier cedex 5, France;4. ISTO, bât. « Géosciences », université d''Orléans, BP 6759, 45067 Orléans cedex 2, France |
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| Abstract: | The Sando Alcalde ore deposit (southwestern Peru) has been studied in order to characterize the physicochemical parameters of the ore fluids and to determine the fluid process (mixing or boiling) which involves the precious metal mineralization. Mineralogy, isotopic values and fluid inclusion data give arguments in favour of a boiling phenomenon. This conclusion corroborates fluid inclusion studies previously performed in this area on the low-sulphidation epithermal deposits of Arcata, Orcopampa and Apacheta, where boiling has been described as the main factor for ore deposition. To cite this article: A.-S. André-Mayer et al., C. R. Geoscience 337 (2005). |
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| Keywords: | Peru Epithermal low-sulphidation Fluids Boiling Oxygen isotope Pérou Fluides Ébullition Isotope de l'oxygène |
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