The Collaborative International Dictionary
Bismite
Bismite \Bis"mite\, n. (Min.) Bismuth trioxide, or bismuth ocher.
Wiktionary
bismite
n. (context mineral English) A monoclinic mineral, bismuth trioxide.
Wikipedia
Bismite
Bismite is a bismuth oxide mineral, bismuth trioxide or BiO. 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.