- 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 triclinic mineral, (Ca,Na)(Al,Si)AlSi<sub>2</sub>O<sub>8</sub>) having 90 to 70 mol % Ca and 10 to 30 mol % Na; of the plagioclase series of the feldspar group; prismatic cleavage; white to gray; forms phenocrysts in some basalts and layered mafic-ultramafic intrusions
Industry:Mining
A triclinic mineral, (H<sub>3</sub>O)<sub>2</sub>Cu(UO<sub>2</sub>)<sub>2</sub>(SiO<sub>4</sub>)<sub>2</sub>.2H<sub>2</sub>O ; strongly radioactive; greenishyellow or grass-green; a secondary mineral resulting from alteration of pitchblende associated with other uranium minerals.
Industry:Mining
A triclinic mineral, (K,Na)<sub>3</sub>(Mn,Fe)<sub>7</sub>(Ti,Nb)<sub>2</sub>Si<sub>8</sub>O<sub>24</sub>(O,OH)<sub>7</sub>; astrophyllite group; forms series with astrophyllite and with cesium kupletskite.
Industry:Mining
A triclinic mineral, (Mg,Zn)<sub>5</sub>H<sub>2</sub>(AsO<sub>4</sub>)<sub>4</sub>.10H<sub>2</sub>O .
Industry:Mining
A triclinic mineral, (Mn,Fe,Mg,Ca)SiO<sub>3</sub>; a pyroxenoid; in metasomatic manganese ore deposits; an ornamental stone, esp. in Russia.
Industry:Mining
A triclinic mineral, (Mn,Fe,Mg,Ca)SiO<sub>3</sub>; a pyroxenoid; in metasomatic manganese ore deposits; an ornamental stone, esp. in Russia.
Industry:Mining
A triclinic mineral, (Mn,Fe,Mg,Ca)SiO<sub>3</sub>; a pyroxenoid; in metasomatic manganese ore deposits; an ornamental stone, esp. in Russia.
Industry:Mining
A triclinic mineral, (Mn,Mg,Ca,Pb)<sub>9</sub>(AsO<sub>3</sub>)(AsO<sub>4</sub>)<sub>2</sub>(OH)<sub>9</sub>.2H<sub>2</sub>O(?) ; pseudoorthorhombic.
Industry:Mining
A triclinic mineral, (Na,Ca)((Si,Al)AlSi<sub>2</sub>O<sub>8</sub>) , NaSi 50 to 70 mol %, CaAl 50 to 30 mol %; of the plagioclase series of the feldspar group with prismatic cleavage; white to gray; a common rock-forming mineral in andesites, differentiated gabbros, some anorthosites, and as detrital grains.
Industry:Mining
