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Authors
Affiliations
1 Wadia Institute of Himalayan Geology, Dehra Dun 248001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 40, No 4 (1992), Pagination: 370-378
Abstract
Antimony mineralisation occurs in the form of Sb-Pb-Zn and Sb sulphide veins in the fractures of the granites present close to the Tethyan Thrust near Barashigri glacier of Himachal Pradesh. SimiJar strike and dip patterns of the Tethyan Thrust and the mineralised fractures indicate that the mineralisation may be either syn- or post-thrusting event. Two types of primary inclusions observed in the quartz intimately associated with the sulphides are, (i) liquid + vapour (15-40% by volume) and (ii) liquid + vapour + dark crystal, the latter being found only in Sb-Pb-Zn veins. Heating and freezing studies of the inclusions reveal that the mineralising fluid was epithermal in nature having low salinity and the final deposition of the sulphides was through a simple cooling phenomenon.
Keywords
Fluid Inclusion, Antimony, Barashigri Glacier, Vein, Epithermal, Labaul and Spiti, Himachal Pradesh.
