Product Description Manganese ores of major commercial importance are: (i) pyrolusite (MnO2, Mn about 63.2%); (ii) psilomelane (manganese oxide, containing water and varying amounts of oxides of Ba, K and Na as impurities; Mn commonly 45-60%); (iii) manganite (Mn2O3. Origin :- China , South , Africa Payment Terms :- LC/SBLC