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Un yacimiento de Au en carbonatos del Orógeno Hercínico: el área de Salamón (N León)

Paniagua, A.
Rodriguez Pevida, L.S.
Loredo, F.
Fenoll Hach-Alí, P.
Published in Geogaceta. 1996, vol. 20, p. 1605-1608
Abstract The Salamon gold prospect constitutes an example of carbonate-hosted gold deposit formed during the last events of the Hercynian orogeny. It is formed by a complex paragenetic sequence of AuAs- Sb-Hg-Cu-Ni-Co-Pb-Zn-U minerals in jasperoid and quartz-dolomite host rack. Au correlates positively with As at single crystal scale in pyrite and arsenopyrite. Fluid inclusion studies and arsenopyrite geothermometry show temperatures in the range 140-280° at 350-400 bars. Stable isotope data suggest reduction of sulfur from marine evaporites and buffer of carbon in the fluid by the host carbonates. The age of the deposit is 269 ± 5 m.y. accroding U-Pb determination on uranite grains, which is consistent with an uranite age from Villamarin and with age determinations of intrusive rocks spatially associated to several ore deposits in the area.
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Research group Mineral Resources and Geofluids
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PANIAGUA, A. et al. Un yacimiento de Au en carbonatos del Orógeno Hercínico: el área de Salamón (N León). In: Geogaceta, 1996, vol. 20, p. 1605-1608. https://archive-ouverte.unige.ch/unige:76803

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Deposited on : 2015-11-04

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