Sequence of chromite crystallization at Boula-Nausahi Igneous Complex, Orissa, India

Mohanty J. K. and Paul A. K. and Sahoo R. K.: Sequence of chromite crystallization at Boula-Nausahi Igneous Complex, Orissa, India. In: Acta mineralogica-petrographica, (42). pp. 45-50. (2001)

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Abstract

The chromite deposit at Boula-Nausahi Igneous Complex is of stratiform type where chromite occurs as layers in ultramafic rocks. The chromites in this complex can be ascribed to early and late stage crystallization based on differences in their physical, chemical and beneficiation characteristics. The early stage chromites are characterised by their association with serpentinite, coarser grain size, nonmagnetic nature, high Cr content, high Cr/Cr+Al ratio, average chemical composition (Cr203-51.9%, FeO-26.9%, MgO-lO.3%, A1203- 10.2%, Ti02-0.45%, V203-.2%, Cr/Fe-1.74) and amenability to simple beneficiation techniques. On the contrary, the late stage chromites are characterised by their association with fine grained fibrous and magnetic silicates, fine grain size, magnetic behaviour, low Cr content, low Cr/Cr+Al ratio, average chemical composition (Cr203-27%, FeO-53.7%, MgO-6%, Al203-10.5%, Ti02-2.5, V203-0.4% and Cr/Fe-0.45) and difficult to beneficiation.

Item Type: Article
Journal or Publication Title: Acta mineralogica-petrographica
Date: 2001
Volume: 42
ISSN: 0365-8066
Page Range: pp. 45-50
Language: English
Publisher: Department of Mineralogy, Geochemistry and Petrology, University of Szeged
Place of Publication: Szeged
Related URLs: http://acta.bibl.u-szeged.hu/39423/
Uncontrolled Keywords: Földtan, Kőzettan, Ásványtan
Additional Information: Bibliogr.: 50. p. ; ill. ; összefoglalás angol nyelven
Subjects: 01. Natural sciences
01. Natural sciences > 01.05. Earth and related environmental sciences
Date Deposited: 2016. Oct. 17. 09:25
Last Modified: 2022. Aug. 09. 08:24
URI: http://acta.bibl.u-szeged.hu/id/eprint/25089

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