Sánchez Pérez-Cejuela, Virginia and Stuart , Finlay M. and Martín Crespo, Tomás and Vindel Catena, Elena and Corbella, Mercè and Cardellach, Esteve (2010) EXPRESS LETTER Helium isotopic ratios in fluid inclusions from fluorite-rich Mississippi Valley- Type district of Asturias, northern Spain. Geochemical journal, 44 . e1-e4. ISSN 0016-7002
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Abstract
Helium isotopes have been measured in fluorite and sulphides from fluorite-rich Mississippi Valley-type (MVT) deposits from Asturias, Spain, in order to assess the involvement of mantle and crust-derived volatiles in the genesis of the deposits. The 3He/4He of the ore fluids are ≤0.1 Ra ruling out a contribution of mantle-derived magmatic helium in the inclusion fluids. Data support a crustal source for the volatiles and is consistent with the existing basinal model for the genesis of the Asturias MVT mineralization by mixing of sedimentary brines with infiltrating superficial fluids.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Fluorite, Noble gases, Helium isotopes, Fluid inclusions, Asturias, MVT deposits |
| Subjects: | Sciences > Geology > Crystallography |
| ID Code: | 16445 |
| Deposited On: | 19 Sep 2012 12:01 |
| Last Modified: | 19 Sep 2012 12:01 |
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