Tags: Chemical Substance, Mineral.
Hausmannite is a complex oxide of manganese containing both di- and tri-valent manganese. The formula can be represented as Mn2+Mn3+2O4. It belongs to the spinel group and forms tetragonal crystals. Hausmannite is a brown to black metallic mineral with Mohs hardness of 5.5 and a specific gravity of 4.8.The type locality is Oehrenstock (Öhrenstock) Ilmenau Thuringian Forest Thuringia Germany.
