The manganese ores of Kutingi mines, Koraput District, Orissa, India

"The manganese ore deposits of the Kutingi group of mines, Koraput district, Orissa, India, were studied in the field with reference to the lithological and structural controls of ore deposition. Among the gneisses, quartzites, and granulites of the Khondalite series, the sedimentary equivalent of the clayey quartzite is the favorable horizon for the original manganese deposition. Drag folding is the major structural control and foliation planes are a minor structural control for the concentration of manganese ore during tectonism and metamorphism. The drag folding, foliation planes and the joints are zones along which secondary enrichment of the manganese ores has been carried out by meteoric waters."

This record provided courtesy of AGI/GeoRef.