Loveson, V.J. (2010) Occurrence and Emplacement of Chromite Ores in Sindhudurg District Maharashtra, India. Acta Geologica Sinica - English Edition, 84 (3). pp. 515-527. ISSN 1000-9515

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Abstract

We present the occurrence and emplacement of chromite ore deposits of two abandoned mines (Kankavali/Janoli and Wagda) in the sindhudurg district of Maharashtra, India. These ores, that occurred as lenses and associated with metamorphic and ultrabasic rocks, consist of octahedral grains of chromite while clinochlore is present between the interstices of these grains. The kankavali (Janoli) and wagda ores revealed a dominance of Cr2O3 followed by FeO and variable proportions of Al2O3, MgO and SiO2. The former deposits have a slightly higher Cr2O3 (av 52 wt.%) and FeO (~ 18 wt.%) than those form Wagda (Cr2O3 ~50 wt.% FeO ~25 wt.%). The similar Cr# values (0.73 for Kankavali (Janoli) 0.74 forWagda) correspond to those reported for typical podiform-type chromite deposits. We suggest that the ores were emplaced as phacoliths in the folded outcrops that have a steep easterly dip and a NW-SE trend. We postulate the continuation of the fold structure from Janoli to Wagda (~ 4.5 km apart) and the probable (sporadic) occurrence of chromite along this stretch. The possibility of contribution of chromite granis from these areas to the coastal placer deposits can not be ruled out.

Item Type:	Article
Uncontrolled Keywords:	Chromite, Podiform, Formation, Placers, Sindhudurg, India
Subjects:	Beach Placer Mining
Divisions:	UNSPECIFIED
Depositing User:	Dr. Satyendra Kumar Singh
Date Deposited:	28 Dec 2011 10:13
Last Modified:	28 Dec 2011 10:13
URI:	http://cimfr.csircentral.net/id/eprint/517

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