Minerals identify

Know how to recognize them

Hausmannite

Oxide mineral

Hausmannite is a complex oxide containing both di- manganese. The formula can be represented as Mn2+Mn3+2O4. It belongs to the spinel group 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 , where it was first described in 1813. Locations include Batesville, Arkansas; Langban, Russia High quality samples have been found in South Africa where it is associated with other manganese oxides, pyrolusite and psilomelane and the iron-manganese mineral bixbyite (1827) named it in honour of Johann Friedrich Ludwig Hausmann (1782–1859), Professor of Mineralogy, University of Göttingen, Germany.

Identification

Color of mineral

Brown
Black
Grey

Mohs scale ( mineral hardness )

5.5

The streak

Red
Brown

Density ( specific gravity )

2.15
2.46

Luster ( interacts light )

Metallic
Submetallic

Crystal ( diaphaneity )

Tetragonal