- 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 monoclinic mineral, Ca<sub>3</sub>Mg<sub>3</sub>(UO<sub>2</sub>)<sub>2</sub>(CO<sub>3</sub>)<sub>6</sub>(OH)<sub>4</sub>.18H<sub>2</sub>O ; radioactive; forms yellow efflorescence on mine walls.
Industry:Mining
A monoclinic mineral, Ca<sub>3</sub>Si<sub>2</sub>O<sub>4</sub>(OH)<sub>6</sub>; it is formed as portland cement is hydrated under special conditions, and where calcium silicate is autoclaved (as in sand-lime brick manufacture).
Industry:Mining
A monoclinic mineral, Ca<sub>3</sub>Si<sub>2</sub>O<sub>7</sub>.3H<sub>2</sub>O(?) ; occurs on the Kola peninsula, Russia, where it is related to foshagite and centrallassite and named from a combination of those names. Also spelled foshallasite.
Industry:Mining
A monoclinic mineral, Ca<sub>3</sub>Si<sub>2</sub>O<sub>7</sub>; dimorphous with kilchoanite; rare in contact metamorphic rock, but common in blast furnace slag.
Industry:Mining
A monoclinic mineral, Ca<sub>3</sub>V<sub>10</sub>O<sub>28</sub>.17H<sub>2</sub>O ; forms yellow-orange to dark red-orange crusts and tiny laths; a secondary vanadium mineral in uranium-vanadium deposits of the Colorado Plateau, and at Minasragra, Peru.
Industry:Mining
A monoclinic mineral, Ca<sub>4</sub>B<sub>4</sub>(BO<sub>4</sub>)(SiO<sub>4</sub>)<sub>3</sub>(OH)<sub>3</sub>.H<sub>2</sub>O ; gadolinite group; in white compact nodules resembling marble or unglazed porcelain; in the Mohave Desert, CA.
Industry:Mining
A monoclinic mineral, Ca<sub>4</sub>Fe(Fe,Al)<sub>4</sub>(PO<sub>4</sub>)<sub>6</sub>(OH)<sub>4</sub>.13H<sub>2</sub>O ; occurs in scales and nodules.
Industry:Mining
A monoclinic mineral, Ca<sub>5</sub>(PO<sub>4</sub>)<sub>3</sub>Cl ; apatite group.
Industry:Mining
A monoclinic mineral, Ca<sub>5</sub>(Si<sub>2</sub>O<sub>7</sub>)(CO<sub>3</sub>)<sub>2</sub>; forms white grains in rock at Crestmore, CA.
Industry:Mining
A monoclinic mineral, Ca<sub>5</sub>(SiO<sub>4</sub>)<sub>2</sub>(CO<sub>3</sub>) ; dimorphous with paraspurrite; forms light gray granular masses resembling limestone; at Velardena, Durango, Mexico; Scawt Hill, Ireland; Luna County, NM; and Crestmore, CA.
Industry:Mining
