New data on the mineralogy of chromite from the Nuggihalli Schist Belt, Western Dharwar Craton, Karnataka, India : petrogenetic implications

Raju, P.V. Sunder; Babu, Elapavalooru V.S.S.K.; Merkle, R.K.W. (Roland Karl Willi), 1954-

dc.contributor.author	Raju, P.V. Sunder
dc.contributor.author	Babu, Elapavalooru V.S.S.K.
dc.contributor.author	Merkle, R.K.W. (Roland Karl Willi), 1954-
dc.date.accessioned	2011-09-12T06:58:06Z
dc.date.available	2011-09-12T06:58:06Z
dc.date.issued	2011-02
dc.description.abstract	The occurrence of rhythmic layering of chromite and host serpentinites in the deformed layered igneous complexes has been noticed in the Nuggihalli schist belt (NSB) in the western Dharwar craton, Karnataka, South India. For this study, the chromitite rock samples were collected from Jambur, Tagadur, Bhakatarhalli, Ranganbetta and Byrapur in the NSB. Petrography and ore microscopic studies on chromite show intense cataclasis and alteration to ferritchromite. The ferritchromite compositions are characterized by higher Cr number (Cr/[Cr + Al]) (0.68–0.98) and lower Mg number (Mg/[Mg + Fe]) (0.33–0.82) ratios in ferritchromite compared to that of parent chromite. The formation process for the ferritchromite is thought to be related to the exchange of Mg, Al, Cr, and Fe between the chromite, surrounding silicates (serpentines, chlorites), and fluid during serpentinization.	en
dc.description.sponsorship	These research results are part of an ongoing DST project by PVSR (no. GAP 538-28 [PVSR]), funded by the Department of Science and Technology, Government of India.	en_US
dc.description.uri	http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1755-6724	en_US
dc.identifier.citation	Raju ,PVS, Babu, EVSSK & Merkle, RKW 2011, 'New data on the mineralogy of chromite from the Nuggihalli Schist Belt, Western Dharwar Craton, Karnataka, India : petrogenetic implications', Acta Geologica Sinica, vol. 85, no. 1, pp. 107-115.	en
dc.identifier.issn	1755-6724 (online)
dc.identifier.other	10.1111/j.1755-6724.2011.00383.x
dc.identifier.uri	http://hdl.handle.net/2263/17268
dc.language.iso	en	en_US
dc.publisher	Wiley	en_US
dc.rights	© (2011) Geological Society of China	en
dc.subject	Ferritchromite	en
dc.subject	Nuggihalli schist belt	en
dc.subject	Dharwar craton	en
dc.subject.lcsh	Petrogenesis -- India -- Karnataka	en
dc.subject.lcsh	Chromite -- India -- Karnataka	en
dc.title	New data on the mineralogy of chromite from the Nuggihalli Schist Belt, Western Dharwar Craton, Karnataka, India : petrogenetic implications	en
dc.type	Postprint Article	en