- 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 very pure iron produced by an electrolytic process. It has excellent magnetic properties and is often used in magnet cores.
Industry:Mining
A very rare tetragonal mineral, H(UO<sub>2</sub>)(AsO<sub>4</sub>) .4H<sub>2</sub>O ; autunite group; strongly radioactive; lemon-yellow; in veins with walpurgite, zeunerite, uranospinite, pitchblende, and other uranium minerals. Also spelled troegerite.
Industry:Mining
A very rare, strongly radioactive, colorless to pale cream, monoclinic mineral, ThSiO<sub>4</sub>, found in sands and gravels with scheelite, cassiterite, uranothorite, zircon, ilmenite, and gold.
Industry:Mining
A very rare, strongly radioactive, possibly orthorhombic, sulfur-yellow translucent mineral, U<sub>3</sub>(VO<sub>4</sub>)<sub>2</sub>.6H<sub>2</sub>O ; found associated with other uranium minerals. Ferganite may be a leached or weathered product of tyuyamunite. A source of vanadium.
Industry:Mining
A very rare, strongly radioactive, triclinic, dark green to almost black mineral, Cu<sub>2+</sub>(UO<sub>2</sub>)(OH)<sub>4</sub>; a secondary mineral found associated with kasolite, sklodowskite, malachite, geothite, chalcocite, chalcopyrite, and uraninite; also found associated with curite, uranophane and cobalt wad; from Karungwe, Katanga, Zaire. Also spelled vandenbrandeite.
Industry:Mining
A very sensitive balance used in the assaying of gold, silver, etc., for weighing the beads. It usually has magnifying lenses for reading the graduations. See: balance
Industry:Mining
A very small light flash excited in certain natural or synthetic crystals by radioactive rays or particles; the basic phenomenon of the scintillation counter in which the photoelectric effect of the scintillation flashes is amplified and measured to give a measure of intensity of radioactivity.
Industry:Mining
A very strong, armored conveyor that is moved forward behind a coal plow by means of a traveling wedge pulled along by the plow or by means of jacks or compressed-airoperated rams attached at intervals to the conveyor structure.
Industry:Mining
