Petrographic Characteristics of Manganese Bearing Rocks of Banswara Manganese Ores Belt, District Banswara, Rajasthan (India)
Open Journal of Geology, 2017, 7, 1047-1062 http://www.scirp.org/journal/ojg ISSN Online: 2161-7589 ISSN Print: 2161-7570 Petrographic Characteristics of Manganese Bearing Rocks of Banswara Manganese Ores Belt, District Banswara, Rajasthan (India) Mohd Shaif1*, F. N. Siddiquie1, Subir Mukhopadhyay2 1Department of Geology, Aligarh Muslim University (AMU), Aligarh, India 2Department of Geological Sciences, Jadavpur University, Kolkata, India How to cite this paper: Shaif, M., Siddi- Abstract quie, F.N. and Mukhopadhyay, S. (2017) Petrographic Characteristics of Manganese In this paper, we described the petrographical characters of the Mn-bearing Bearing Rocks of Banswara Manganese Ores rock types outcropping in the Kalakhuta, Ghatia, Gararia, Itala, Wagaicha, Belt, District Banswara, Rajasthan (India). Tambesara and Talwara villages of Banswara district. The Mn associated rocks Open Journal of Geology, 7, 1047-1062. https://doi.org/10.4236/ojg.2017.77070 in the study area are phyllite, schist, quartzite and limestone. The mineral as- semblage in phyllite formed under greenschist facies metamorphism. Petro- Received: June 15, 2017 graphic studies of various phyllite samples also reveal that porphyroblasts of Accepted: July 24, 2017 biotite sat in the fine-grained micaceous matrix (Biotite, muscovite, chlorite) Published: July 27, 2017 along with quartz, opaque and ore minerals. Petrographic studies of schist re- Copyright © 2017 by authors and veal its formation under prograde metamorphism. Mineral assemblages ob- Scientific Research Publishing Inc. served in schist are typical of greenschist to lower amphibolite facies. The This work is licensed under the Creative various schist samples at places show clusters made up of perfect rhomb- Commons Attribution International shaped garnets which suggest the increase in the grade of metamorphism.
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