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United States Bureau of Mines
Industry: Mining
Number of terms: 33118
Number of blossaries: 0
Company Profile:
The U.S. Bureau of Mines (USBM) was the primary United States Government agency conducting scientific research and disseminating information on the extraction, processing, use, and conservation of mineral resources. Founded on May 16, 1910, through the Organic Act (Public Law 179), USBM's missions ...
A tetragonal mineral, Cu<sub>3</sub>SbS<sub>4</sub>; stannite group; occurs with enargite, tetrahedritetennantite, chalcopyrite, and covellite in copper ores worldwide, notably at Mankayan, Luzon, Philippines; Famatina, Argentina; and Butte, MT.
Industry:Mining
A tetragonal mineral, Cu<sub>3</sub>Se<sub>2</sub>; dark red, tarnishing to violet.
Industry:Mining
A tetragonal mineral, Cu<sub>7</sub>(Tl,Ag)Se<sub>4</sub>; massive or compact.
Industry:Mining
A tetragonal mineral, Cu<sub>9</sub>Fe<sub>9</sub>S<sub>16</sub>; in magmatic sulfide deposits; a significant copper ore mineral at Noril'sk, Russia.
Industry:Mining
A tetragonal mineral, CuAs<sub>+3 2</sub>O<sub>4</sub>; excellent prismatic cleavage permitting crystals to be broken into flexible fibers; blue-green; at Atacama, Chile.
Industry:Mining
A tetragonal mineral, CuB(OH)<sub>4</sub>Cl ; occurs as dark blue crystals in Chile.
Industry:Mining
A tetragonal mineral, CuFeSe<sub>2</sub>; chalcopyrite group; forms a series with chalcopyrite; is metallic brass yellow; variably magnetic; with chalcopyrite, clausthalite, and naumannite in dolomite veins, Eskeborn adit, Tilkerode, Harz Mountains, Germany.
Industry:Mining
A tetragonal mineral, CuGaS<sub>2</sub>; chalcopyrite group; forms grains and inclusions in germanite and renierite, and exsolution lamellae in sphalerite and pyrite-sphalerite assemblages at Tsumeb, Namibia, and Shaba Province, Zaire.
Industry:Mining
A tetragonal mineral, CuInS<sub>2</sub>; chalcopyrite group; at Charrier, Allier, France.
Industry:Mining
A tetragonal mineral, Fe(UO<sub>2</sub>)<sub>2</sub>(AsO<sub>4</sub>)<sub>2</sub>.8H<sub>2</sub>O; meta-autunite group.
Industry:Mining
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