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Precambrian iron ores of the Singhbhum‐North Orissa region occur in eastern India as part of the Iron Ore Group (IOG) within the broad horse‐shoe shaped synclinorium. More than 50% of Indian iron ore reserves occur in this region. Massive‐hard, flaky‐friable, blue dust and lateritic varieties of iron ores are the major ore types, associated with banded hematite, jasper and shales. These ores could...
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