Publication: Helium isotopic ratios in fluid inclusions from fluorite-rich Mississippi Valley-
Type district of Asturias, northern Spain
Loading...
Official URL
Full text at PDC
Publication Date
2010
Advisors (or tutors)
Editors
Journal Title
Journal ISSN
Volume Title
Publisher
The Geochemical Society of Japan
Citations
Exportar
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.