Bismite
A variety of Minerals

What is Bismite?
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 later from the Schneeberg District, Ore Mountains, Saxony, Germany.
Bismite Market Value Calculator
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Bismite Localities Map
See where Bismite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Greyish green, greenish yellow to bright yellow
- Hardness (Mohs)
- 4.5
- Density
- 10.4 g/cm³
- Streak
- Grey to yellow
Chemical Properties
- Chemical Formula
- Bi2O3
- Elements
- Bi, O
Also Known As

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