The important ores of Manganese Dioxide (pyrolusite) (MnO2), Psilomelane (MnO2. H2O) These Minerals are usually found associated with various other constituents like iron, silica, alumina, magnesium, phosphorous and sulphur. Manufacture of ferro-manganese and iron and steel are the chief consumers of Manganese ore.
Pyrolusite ore is used in manufacture or dry cells.