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

R. N. Singh ¹, Ralph Thorpe ², D. Kristic ³

Affiliations
1 Geological Survey of India, Lohianagar, Patna - 800 020, IN
2 Geological Survey of Canada, Ontario, KIAOE 8, CA
3 Geospec Consultants Ltd., 4632, 151 Street, Edmonton, Alberta T6H5 N8, CA

Abstract

Pb isotope data were obtained for galena specimens from 5 sulphide occurrences within the Chotanagpur Gneissic Complex (CGC) in eastern Bihar, where the host rock occurs as enclaves within the CGC. Based on galena Pb isotope composition, an attempt has been made to suggest a Proterozoic event of sulphide mineralization related to Precambrian crustal evolution. An age range 1650 to 1700 Ma seems reasonable for the Bihar galena.

Keywords

Sulphides, Lead Isotopes, Actinolite-Tremolite Schist, Chotanagpur Gneissic Complex (CGC), Bihar.

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