Mineral Chemistry and IMA Nomenclature of Amphibole Minerals of Amphibolite Sills from Chhotanagpur Granite Gneiss Complex (CGGC), Southern Sonbhadra, Central India
Authors
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Department of Geology, Institute of Science, Banaras Hindu University, Varanasi - 221 005
Ankita A. Singh -
Department of Geology, Institute of Science, Banaras Hindu University, Varanasi - 221 005
D. Prakash
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Department of Geology, Institute of Science, Banaras Hindu University, Varanasi - 221 005
B. P. Singh
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Department of Geology, Institute of Science, Banaras Hindu University, Varanasi - 221 005
C. K. Singh
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Department of Geology, University of Lucknow, Lucknow - 226 007
Manoj K. Yadav
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Department of Geology, Institute of Science, Banaras Hindu University, Varanasi - 221 005
Rajeev K. Pandey
DOI:
https://doi.org/10.17491/jgsi/2024/173890Keywords:
No Keywords.Abstract
In southern part of Sonbhadra District, near the Rihand Dam, low to medium grade amphibolites of Paleoproterozoic age are exposed. The outcrops are in the form of sills that occur at places in the Chhotanagpur Granite Gneiss Complex (CGGC). The essential mineralogical constituents of the amphibolite are amphibole-plagioclase-chlorite-biotite-iron oxides. Based on the mineral chemistry and interpretation as per the international mineralogical association (IMA) nomenclature scheme, amphiboles in the analysed amphibolite rock samples have been identified as magnesio-hornblende, magnesio-ferrihornblende and edenite.
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