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United States Bureau of Mines
行业: 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 monoclinic mineral, CaMg(UO<sub>2</sub>)(CO<sub>3</sub>)<sub>3</sub>.12H<sub>2</sub>O ; radioactive; green; forms an efflorescence with gypsum, schroeckingerite, bayleyite, and andersonite.
Industry:Mining
A monoclinic mineral, CaMgSi<sub>2</sub>O<sub>6</sub>; pyroxene group; white to light green; in metamorphic rocks, esp. contact metamorphosed limestones; where transparent, a semiprecious gemstone. Symbol: Di or di.
Industry:Mining
A monoclinic mineral, CaMn<sub>2</sub>Be<sub>3</sub>(SiO<sub>4</sub>)<sub>3</sub>.
Industry:Mining
A monoclinic mineral, CaSrV<sub>2</sub>O<sub>6</sub>(OH)<sub>2</sub>.3H<sub>2</sub>O ; pale yellow-green microcrystalline efflorescence on sandstone occurring in Montrose County, CO.
Industry:Mining
A monoclinic mineral, CaTiOSiO<sub>4</sub>; Ca is replaced by Sr, Ba, Na, Mn, Th, or rare earths; Ti is replaced by Al, Fe, Mg, Nb, Ta, V, or Cr; up to 1/5 of O<sub>2-</sub>may be replaced by (OH,F)<sub>-</sub>; weakly radioactive: forms wedge-shaped crystals; a common accessory in felsic plutonic rocks, in gneisses, schists, and marbles; a source of titanium. Formerly called sphene.
Industry:Mining
A monoclinic mineral, CaV<sub>4</sub>O<sub>9</sub>.5H<sub>2</sub>O ; dark green.
Industry:Mining
A monoclinic mineral, CaV<sub>6</sub>O<sub>16</sub>.3H<sub>2</sub>O ; dark-red to yellow-brown; forms tabular crystals impregnating sandstone in southwest Colorado and southeast Utah. Compare: hewettite
Industry:Mining
A monoclinic mineral, CaV<sub>6</sub>O<sub>16</sub>.9H<sub>2</sub>O ; forms deep red microscopic needles in vanadium deposits near Cerro de Pasco, Peru, and Paradox Valley, CO.
Industry:Mining
A monoclinic mineral, CoSO<sub>4</sub>.7H<sub>2</sub>O ; melanterite group; flesh-red to rose-red; esp. in crusts and stalactites.
Industry:Mining
A monoclinic mineral, CoSO<sub>4</sub>.7H<sub>2</sub>O ; melanterite group; flesh-red to rose-red; esp. in crusts and stalactites.
Industry:Mining
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