CHROMITE MINERALIZATION IN KALIAPANI AND SUKERANGI MINES OF SUKINDA VALLEY, ODISHA

Abstract

The Sukinda ultramafic complex of Odisha comprises ultramafic rocks containing chrornitite. The chromitites have been intruded into metasediments of iron Ore Group of mcso-Archaean age in the north. Chomitite bands are discontinuously exposed in almost the entire east-west trending belt, the extreme ends of which are folded in the eastern side. Chrornite is the predominant ore mineral in the area of non metallic minerals like talc. - tremolite, serpentine, kammererite, uvarvite and crypiocrystallinc silica that occurs in different forms with varying structural and textural charactetistics. Pyroxenite granite and fw dolerites are the younger litho units to intrude into the chromiferous ultramafites. The ultrabasin rocks are all of Precambrian age parallel or sub parallel to major tectonic zones of peninsular india and are intrusive into the pre-existing sediments and volcanics, subsequently regionally metamorphosed and tectonically deformed. Evidences show that these chromities are formed in a suprasubduction zone setting. The basic aim of this work is to go one step ahead in the direction of ore genesis of chrornite with the help of lithological, textural and structural study of the host rock and the ore body along with changes related to P-t condition and their relationship with the lithology, correlation between the P-T condition and development of minerolgy of the chromite ore.