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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 clay-filled cavity in rock; a mass of clay in rock or gravel.
Industry:Mining
A clay-filled cavity in rock; a mass of clay in rock or gravel.
Industry:Mining
A claylike mineral closely related to or identical with kaolinite.
Industry:Mining
A cleaned and screened anthracite product 7/8 in by 3/8 in (22.2 mm by 9.5 mm).
Industry:Mining
A cleaning process in which dust and other fine impurities are removed. Dedusting is accomplished both by pneumatic means and by dry screening.
Industry:Mining
A cleaning process in which dust and other fine impurities are removed. Dedusting is accomplished both by pneumatic means and by dry screening.
Industry:Mining
A clear yellow variety of beryl found near Rossing, Namibia, and prized as a gemstone. Also spelled helidor. Compare: golden beryl.
Industry:Mining
A clear, colorless, sparkling liquid or a transparent orthorhombic crystal; H<sub>3</sub>PO<sub>4</sub>(orthophosphoric acid), depending on the concentration and the temperature. At ordinary atmospheric temperature (20 degrees C), the 50% and 75% acids are mobile liquids, the 85% acid is syrupy, and the 100% acid is in crystals; specific gravity, 1.834 (at 18 degrees C); melting point, 42.35 degrees C; boiling point, 260 degrees C; soluble in water and in alcohol; and very corrosive to ferrous metals and alloys.
Industry:Mining
A clear, golden-yellow or yellowish-green gem variety of beryl. Compare: heliodor.
Industry:Mining
A clear-yellow, rounded segregation of very pure carnotite found in the soft sandstone of Temple Rock, San Rafael Swell, UT.
Industry:Mining
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