Cubic green crystals that are insoluble in water but soluble in acids
It is a naturally occurring mineral, blackish brown in color and has purity ranging from 60% MnO2 upto 85% MnO2 after processing. It is widely used in the manufacture of dry cell battery, colorings glass and concrete, matchbox, catalyst and as a factory reagent
Manganese(II,III) oxide is the chemical compound with formula Mn3O4. Manganese is present in two oxidation states +2 and +3 and the formula is sometimes written as MnO.Mn2O3. Mn3O4is found in nature as the mineral hausmannite.
Hausmannite - a mineral consisting of manganese tetroxide; a source of manganese atomic number 25, manganese, Mn - a hard brittle grey polyvalent metallic element that resembles iron but is not magnetic; used in making steel; occurs in many minerals
Mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
Magnetite is ferrimagnetic mineral with chemical formula Fe3O4, one of several iron oxidesand a member of the spinel group. The chemical IUPAC name is iron (II,III) oxide and the common chemical name is ferrous-ferric oxide. The formula for magnetite may also be It is black or brownish-black with a metallic luster, has a Mohs hardness of 5–6 and a black streak.
Uses:Fertilizers, Paints , High Density Concrete , Functional filler for Polymer & Rubber , foundry sand , welding Electrodes, Catalyst other uses