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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 ...
An orthorhombic mineral, Na<sub>2</sub>MgAlF<sub>7</sub>; pale gray; forms grains in cryolite; in Greenland.
Industry:Mining
An orthorhombic mineral, Na<sub>2</sub>SO<sub>4</sub>; soft; forms masses and crusts in evaporite deposits and around fumaroles; a source of sodium sulfate.
Industry:Mining
An orthorhombic mineral, Na<sub>2</sub>SO<sub>4</sub>; soft; forms masses and crusts in evaporite deposits and around fumaroles; a source of sodium sulfate.
Industry:Mining
An orthorhombic mineral, Na<sub>2</sub>ZrSi<sub>6</sub>O<sub>15</sub>.3H<sub>2</sub>O; in fibrous, columnar, prismatic crystals in albitized nepheline-syenite pegmatites at Narsarsuk, Greenland; Kola Peninsula, Russia; Mont St. Hilare, PQ, Canada; and Tarbagatai, Kazakhstan.
Industry:Mining
An orthorhombic mineral, Na<sub>4</sub>Ca<sub>8</sub>(Al<sub>20</sub>Si<sub>20</sub>O<sub>80</sub>).24H<sub>2</sub>O ; zeolite group; pseudotetragonal; occurs in amydules and crevices in basalts and tuffs; also an alteration of anorthite.
Industry:Mining
An orthorhombic mineral, Na<sub>4</sub>Ca<sub>8</sub>(Al<sub>20</sub>Si<sub>20</sub>O<sub>80</sub>).24H<sub>2</sub>O ; zeolite group; pseudotetragonal; occurs in amydules and crevices in basalts and tuffs; also an alteration of anorthite.
Industry:Mining
An orthorhombic mineral, NaAl(CO<sub>3</sub>)(OH)<sub>2</sub>; white; forms thin incrustations of radiating bladed crystals.
Industry:Mining
An orthorhombic mineral, NaBeSi<sub>3</sub>O<sub>7</sub>(OH) ; dimorphous with eudidymite; forms colorless tabular crystals in nepheline-syenite pegmatites with albite, elpidite, and analcime at Mont St. Hilare, PQ, Canada; Narsarsuk, Greenland; and Langesundfjord, Norway.
Industry:Mining
An orthorhombic mineral, NaBF<sub>4</sub>; forms minute crystals with sassolite as a sublimate around fumaroles at Mt. Vesuvius, Italy.
Industry:Mining
An orthorhombic mineral, NaCaCu<sub>5</sub>(PO<sub>4</sub>)<sub>4</sub>Cl.5H<sub>2</sub>O ; forms crusts of minute blue crystals.
Industry:Mining
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