Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

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Fluid Inclusion Studies on Molybdenite Mineralization of Yegawakote, Kolar District, Karnataka, India


Affiliations
1 Department of Geology, Bangalore University, Bangalore 560056, India
2 Department of Geology, Mysore University, Mysore 570006, India
     

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A small and economically unimportant molybdenite mineralization is found in the Peninsular gneisses around Yegawakote. Pyrite and chalcopyrite are the other ore minerals found associated with molybdenite. These minerals are found as fracture fillings in quartz veins.

Fluid inclusion studies on quartz carrying ore minerals reveal the presence of carbonic, through CO2-H2O, to entirely pure aqueous saline fluids. Microthermometric data show that most of the aqueous inclusions are in the salinity range of 4 to 15 wt%. NaCl have formed at temperatures of around 200-370 °C.


Keywords

Molybdenite, Fluid Inclusions, Homogenization, Salinity, Yegawakote, Karnataka.
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  • Fluid Inclusion Studies on Molybdenite Mineralization of Yegawakote, Kolar District, Karnataka, India

Abstract Views: 175  |  PDF Views: 1

Authors

Syed Ashfaq Ahmed
Department of Geology, Bangalore University, Bangalore 560056, India
A. M. Pathan
Department of Geology, Bangalore University, Bangalore 560056, India
C. Srikantappa
Department of Geology, Mysore University, Mysore 570006, India

Abstract


A small and economically unimportant molybdenite mineralization is found in the Peninsular gneisses around Yegawakote. Pyrite and chalcopyrite are the other ore minerals found associated with molybdenite. These minerals are found as fracture fillings in quartz veins.

Fluid inclusion studies on quartz carrying ore minerals reveal the presence of carbonic, through CO2-H2O, to entirely pure aqueous saline fluids. Microthermometric data show that most of the aqueous inclusions are in the salinity range of 4 to 15 wt%. NaCl have formed at temperatures of around 200-370 °C.


Keywords


Molybdenite, Fluid Inclusions, Homogenization, Salinity, Yegawakote, Karnataka.