Minerals identify

Know how to recognize them

Bismite

Oxide mineral

Bismite is a bismuth mineral, bismuth trioxide mineral, but the typical form of occurrence is massive and clay-like with no macroscopic crystals. The color varies from green to yellow. It has a Mohs hardness of 8.5 to 9.5, quite high for a nonmetallic mineral.

Bismite is a secondary oxidation zone mineral which forms from primary bismuth minerals.

It was first described from Goldfield, Nevada in 1868, and later from the Schneeberg District, Ore Mountains , Saxony.

Identification

Color of mineral

Grey

The streak

Grey
Black

Crystal ( diaphaneity )

Monoclinic