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Helium isotopic ratios in fluid inclusions from fluorite-rich Mississippi Valley- Type district of Asturias, northern Spain

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Sánchez Perez-Cejuela, Virginia/I and Stuart, Finlay M. and Martín-Crespo, Tomás and Vindel, Elena and Corbella, Mercè and Cardellach, Esteve (2010) 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 > Mineralogy
Sciences > Geology > Geochemistry
ID Code:21306
Deposited On:20 May 2013 08:09
Last Modified:11 Dec 2018 08:46

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