Genesis of manganese ores of Koraput District, Orissa, India

Manganese ores of Koraput district are typically found in Nishikhal area and occur in association with the khondalite suite of rocks. The manganese ore is high grade in quality with Mn — 59 to 64%. The ores have high phosphorous content, P — 0.30%. The important ore minerals are psilomelane, pyrolus...

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Elmentve itt :
Bibliográfiai részletek
Szerzők: Krishna Rao J. S. R.
Venkata Naidu B.
Dokumentumtípus: Cikk
Megjelent: University of Szeged, Department of Mineralogy, Geochemistry and Petrology Szeged 1982
Sorozat:Acta mineralogica-petrographica 25 No. 2
Kulcsszavak:Kőzettan, Ásványtan, Földtan
Tárgyszavak:
Online Access:http://acta.bibl.u-szeged.hu/24698
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520 3 |a Manganese ores of Koraput district are typically found in Nishikhal area and occur in association with the khondalite suite of rocks. The manganese ore is high grade in quality with Mn — 59 to 64%. The ores have high phosphorous content, P — 0.30%. The important ore minerals are psilomelane, pyrolusite, braunite, cryptomelane and goethite. Bixbyite, nsutite, hollandite, rhodochrosite and manganite are detected by X-ray. These ores are residual concentration type and suggest enrichment by supergene processes. 
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