%0 Journal Article
%A Sánchez Pérez-Cejuela, Virginia
%A Stuart, Finlay M.
%A Martín-Crespo, Tomás
%A Vindel Catena, Elena
%A Corbella, Mercè
%A Cardellach, Esteve
%T Helium isotopic ratios in fluid inclusions from fluorite-rich Mississippi Valley-Type district of Asturias, northern Spain
%D 2010
%@ 0016-7002
%U https://hdl.handle.net/20.500.14352/43809
%X Helium isotopes have been measured in fluorite and sulphides from fluorite-rich Mississippi Valley-type (MVT) depositsfrom Asturias, Spain, in order to assess the involvement of mantle and crust-derived volatiles in the genesis of thedeposits. The 3He/4He of the ore fluids are ≤0.1 Ra ruling out a contribution of mantle-derived magmatic helium in theinclusion fluids. Data support a crustal source for the volatiles and is consistent with the existing basinal model for thegenesis of the Asturias MVT mineralization by mixing of sedimentary brines with infiltrating superficial fluids.
%~