- المجال: Mining
- Number of terms: 33118
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- 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 white pulverulent titanium oxide, TiO<sub>2</sub>, found native as brookite, octahedrite, and rutile, and a common constituent of iron ores.
Industry:Mining
A white pulverulent titanium oxide, TiO<sub>2</sub>, found native as brookite, octahedrite, and rutile, and a common constituent of iron ores.
Industry:Mining
A white to yellow acicular mineral, MgBO<sub>2</sub>(OH) . Probably orthorhombic. Occurs in nodules; related to camsellite.
Industry:Mining
A white to yellow acicular mineral, MgBO<sub>2</sub>(OH) . Probably orthorhombic. Occurs in nodules; related to camsellite.
Industry:Mining
A white trigonal mineral, Pb<sub>8</sub>Mn(Si<sub>2</sub>O<sub>7</sub>)<sub>3</sub>; occurs at Laangban, Sweden, and Franklin, NJ.
Industry:Mining
A white, anhydrous, nonhygroscopic powder, Al<sub>2</sub>O<sub>3</sub>, produced when precipitated Al(OH), is calcined at 1,000 degrees C. It is the natural product of the Bayer process and other processes used (or proposed) to treat bauxite, clay, or other aluminum-bearing materials.
Industry:Mining
A white, fine-grained potassium mica occurring in small scales as an alteration product of various aluminosilicate minerals, having a silky luster, and found in various metamorphic rocks (esp. in schists and phyllites) or in the wall rocks, fault gouge, and vein fillings of many ore deposits. It is commonly muscovite or very close to muscovite in composition, but may also include paragonite and illite.
Industry:Mining
A white, flaky, waxlike resin of approximate composition C<sub>27</sub>H<sub>53</sub>O<sub>2</sub>in brown coal. Also spelled geocerain, geocerin. Compare: geomyricite
Industry:Mining
