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Title

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

Authors
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.
Full text
Structures
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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