Genetic issues of some of the non metallic minerals in lesser Himalaya
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Date
2010
Authors
Journal Title
Journal ISSN
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Publisher
Iranian Journal of Earth Sciences
Abstract
A brief account of the representative and workable industrial minerals namely magnesite, talc and barite in Lesser Himalaya, is
presented here emphasizing their genesis. Deposits of magnesite and talc are found associated with Neoproterozoic, plateform type,
shelf-slope limestone-dolomite host rocks from inner Lesser Himalayan sequences. Field, textural, geochemical signatures and fluid
inclusions trapped in dolomite and magnesite reveal within basin processes, in an increased burial- diagenetic environment
responsible for formation of magnesite replacing dolomite. Talc is formed at the expense of magnesite and silica, and with limited
dolomite involvement at transition conditions from diagenetic to metamorphism. Barite deposit is hosted within Neoproterozoic
Nagthat quartzite rocks of outer
genetic understanding.
Description
Key words: fluid inclusion, Lesser Himalaya, metamorphism
Keywords
Staff Publication - SoET, Staff Publication - CE
Citation
Joshi, P. (2010). Genetic issues of some of the non metallic minerals in lesser Himalaya. Iranian Journal of Earth Sciences, 2010(2), 168-172