摘要：Banded Iron Formation (BIF) and iron ore deposit occupy three distinct provinces surrounding the North Odisha Iron Ore Craton (NOIOC) located in eastern India. They are Bonai-Keonjhar belt in the western flank, Badampahar-Gorumahisani-Suleipat belt in the eastern flank and Daitari-Tomka belt in the southern side of the Craton. All these three belts having group status are the best preserved basins of the Precambrian period that form Iron Ore Super Group (IOSG) of Odisha. IOSG contains BIFs as enigmatic rock comprising alternate layers of iron bearing minerals and silica. Since long these belts have been undergone numerous investigations with regard to mineralogy, geochemistry, stratigraphy, structure etc. Opinions based on published literatures have still unclear about the status-occurrence of these BIFs. Irrespective of their similarity in many characteristic features, they differ with respect to stratigraphy, structure, mineralogy, metamorphism, intrusives, and thickness of iron formation. With the resemblance in the evolution of basins, their differences have been delineated in this paper.
