Bismite

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Bismite
Bismite.jpg
Bismite
General
Category Oxide minerals
Formula
(repeating unit)
Bi2O3
Strunz classification 04.CB.60

Bismite is a bismuth oxide mineral, bismuth trioxide or Bi2O3. It is a monoclinic 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 4 to 5 and a specific gravity 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 from the Schneeberg District, Ore Mountains, Saxony, Germany.

See also[edit]

Bismuth trioxide: Details on the chemistry of this substance.

References[edit]