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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 tetragonal mineral, (Fe,Ni)<sub>3</sub>P ; highly magnetic; contains small amounts of cobalt and traces of copper and tarnishes to brass yellow or brown. Schreibersite occurs in tables or plates as oriented inclusions in iron meteorites.
Industry:Mining
A tetragonal mineral, (K,Ba)(Ti,Fe)<sub>8</sub>O<sub>16</sub>; cryptomelane group; red; easily mistaken for rutile in leucite rocks; occurs at Kimberley, Western Australia.
Industry:Mining
A tetragonal mineral, (Mn,Zn)Te<sub>2</sub>O<sub>5</sub>; colorless to pale green; forms tetragonal plates and platy masses; at Sonora, Mexico.
Industry:Mining
A tetragonal mineral, (Na<sub>2</sub>,Ca)(UO<sub>2</sub>)<sub>2</sub>(AsO<sub>4</sub>)<sub>2</sub>.5H<sub>2</sub>O ; meta-autunite group; radioactive; yellow-green to yellow; forms fine, tabular to elongated crystals or radial fibrous aggregates; in the oxidation zone of primary hydrothermal deposits. It is the most abundant secondary uranium mineral.
Industry:Mining
A tetragonal mineral, (Pd,Ni)S ; isomorphous with braggite; in minute grains or prisms; at Norilsk, Russia.
Industry:Mining
A tetragonal mineral, (Pt,Pd,Ni)S ; sp gr, 9; in ultramafic rocks, such as the Bushveld, Transvaal, South Africa; an ore of platinum and palladium.
Industry:Mining
A tetragonal mineral, (Ti,Nb,Fe)<sub>3</sub>O<sub>6</sub>; forms a series with strueverite in which tantalum substitutes for niobium; black; sp gr, 5.14.
Industry:Mining
A tetragonal mineral, (Ti,Nb,Fe)<sub>3</sub>O<sub>6</sub>; forms a series with strueverite in which tantalum substitutes for niobium; black; sp gr, 5.14.
Industry:Mining
A tetragonal mineral, 16(KAlSi<sub>2</sub>O<sub>6</sub>) ; a pseudocubic feldspathoid; forms white to gray trapezohedra in potassium-rich, silica-poor lavas.
Industry:Mining
A tetragonal mineral, 16(KAlSi<sub>2</sub>O<sub>6</sub>) ; a pseudocubic feldspathoid; forms white to gray trapezohedra in potassium-rich, silica-poor lavas.
Industry:Mining
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