Mineragraphic Study of Manganese Ore Deposits of Kandri, Mansar, Beldongri and Satak Mines, Nagpur District Maharashtra Central IndiaReportar como inadecuado




Mineragraphic Study of Manganese Ore Deposits of Kandri, Mansar, Beldongri and Satak Mines, Nagpur District Maharashtra Central India - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

In Nagpur, M.P.-Maharashtra Manganese Belt isexposed which is part of Sausar Belt. In Nagpur, four manganese mines vizMansar, Kandri, Beldongri and Satak are selected for the ore microscopic study.These mining areas are situated in that part of Central India which are highlydeformed and metamorphosed and are characterised by high grade amphibolitefacies to low grade greenschist facies. The Precambrian manganese ore depositsof Nagpur are formed by the metasediments of Sausar belt which is rich inmanganese sediments. The manganese ores of the study area are co-folded withdistinct rock types i.e. -gondites-and predominantly composed of a mixture of braunite, bixbyite, hausmannite,hollandite, jacobsite, vredenburgite, pyrolusite, cryptomelane and psilomelane.The dominant rocks are tirodi migmatitic gneiss, argillaceous and calcareousrock types. This paper discusses the mineralogy of the manganese ores of Kandri,Mansar, Satak and Beldongri. After the careful assessment of mineralogy,texture and paragenesis of the manganese ore of the study area, it has beenconcluded that the manganese ores of the study area are formed by the multipleprocesses i.e. metamorphism andsupergene enrichment. These supergene enrichments are evidence of colloidalinflux. Occurrence of free braunite, free hausmannite and free jacobsiteindicates the high grade metamorphism. Pyrolusite, rhodonite, andpsilomelane-cryptomelane are formed by supergene enrichment. The presence oflamellar twinning in braunite indicates about shear pressure. In this area thedifferent manganese mineral assemblages and their textures suggest about theoccurrence of different metamorphic activity and depositional environment. Thetexture and paragenesis of manganese ore of the study area are discussed here.

KEYWORDS

Sausar Belt, Precambrian, Metasediments, Manganese Mineralization, Central India

Cite this paper

Jawed, T. and Siddiquie, F. 2014 Mineragraphic Study of Manganese Ore Deposits of Kandri, Mansar, Beldongri and Satak Mines, Nagpur District Maharashtra Central India. International Journal of Geosciences, 5, 710-727. doi: 10.4236-ijg.2014.57064.





Autor: Talat Jawed, F. N. Siddiquie

Fuente: http://www.scirp.org/



DESCARGAR PDF




Documentos relacionados