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Bismite
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<p>Bismite is a <a href="/facts/Bismuth/75FLjkoX">bismuth</a> <a href="/facts/Oxide/DXtoVe1C">oxide</a> mineral, <a href="/facts/Bismuth_trioxide/CyL3482j">bismuth trioxide</a> or Bi2O3. It is a <a href="/facts/Monoclinic/5PCwXvzX">monoclinic</a> 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 <a href="/facts/Mohs_hardness/wXBMcVIm">Mohs hardness</a> of 4 to 5 and a <a href="/facts/Specific_gravity/ySquGd2x">specific gravity</a> of 8.5 to 9.5, quite high for a nonmetallic mineral. </p><p>Bismite is a secondary oxidation zone mineral which forms from primary bismuth minerals. </p><p>It was first described from <a href="/facts/Goldfield%2c_Nevada/kfp3TUdF">Goldfield, Nevada</a> in 1868, and later from the Schneeberg District, <a href="/facts/Ore_Mountains/CBpj1mdJ">Ore Mountains</a>, <a href="/facts/Saxony/PrKscwCP">Saxony</a>, <a href="/facts/Germany/paluuWBX">Germany</a>. </p>