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Sr and Nd isotope data from the fluorspar district of Asturias, northern Spain

Sánchez Pérez-Cejuela, Virginia and Corbella, Mercè and Fuenlabrada Pérez, José Manuel and Vindel Catena, Elena and Martín Crespo, Tomás (2006) Sr and Nd isotope data from the fluorspar district of Asturias, northern Spain. Journal of geochemical exploration, 89 . pp. 348-350. ISSN 0375-6742

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Abstract

The origin and age of the hydrothermal fluids related to the precipitation of fluorite, barite and calcite in the Villabona, La
Collada and Berbes localities (Asturias fluorspar district, N Spain) have been evaluated from Sr and Nd radiogenic isotopes. Sr
isotope data (87Sr / 86Sr=0.7081 to 0.7096) are compatible with mixing between seawater and a more evolved groundwater that
interacted with the basement. From Nd isotopes in fluorite, an isochron age of 185±29 Ma (Lower Jurassic) was obtained,
consistent with other hydrothermal events in the Iberian Peninsula and Europe. These constraints are essential to proceed with a
quantitative model for the genesis of the mineralization that includes fluid and heat flow together with reactive transport of solutes.

Item Type:Article
Uncontrolled Keywords:Fluorite; Sr isotopes; Sm–Nd isochron; Hydrothermal fluids
Subjects:Sciences > Geology > Crystallography
ID Code:16395
Deposited On:17 Sep 2012 09:38
Last Modified:17 Sep 2012 09:38

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