Abstract
Rocks of the Mangalwar and Sandmata Complex of the Bhilwara Supergroup of Archaean age host copper mineralization in the form of chalcopyrite-bornite in Raipur-Mokhampura and Rajaji ka Karera areas of Bhilwara district, Rajasthan. The area forms a part of the dismembered granite-greenstone sequence of the Bhilwara Supergroup. Chalcopyrite and bornite form the dominant copper sulphides along with pyrite, digenite, chalcocite and some accessory Bi-telluride and Bi-Cu sulphide phases. These sulphides occur along the S2 foliation planes, veins and fractures within the amphibolites and calc-gneiss. Presence of Bi indicates hydrothermal epigenetic nature of the mineralization developed under highly acidic reducing condition and high sulphur fugacity.
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Acknowledgement
The authors would like to thank the ADG & HOD, GSI, WR, Jaipur and Deputy Director General, State Unit: Rajasthan, GSI, WR, Jaipur for giving valuable suggestions while carrying out the assignment and providing administrative support. The authors would also like to thank the Directors, Petrology and Chemical Divisions, GSI, WR, Jaipur and EPMA Lab, NCEGR, GSI, Faridabad for their lab assistance in generating the analytical data.
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Puspalak, B., Panda, L. & Mukhopadhyay, S. Epigenetic Copper Mineralization in Raipur-Mokhampura Area, Mangalwar Complex, Bhilwara District, Rajasthan. J Geol Soc India 97, 1340–1346 (2021). https://doi.org/10.1007/s12594-021-1872-2
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DOI: https://doi.org/10.1007/s12594-021-1872-2