- Отрасли: 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 hexagonal mineral, (Co,Ni)<sub>1-y</sub>(MnO<sub>2</sub>)<sub>2-x</sub>(OH)<sub>2-2y+2x</sub>.nH<sub>2</sub>O ; a soft, black, earthy aggregate commonly classed as a variety of "wad," the cobalt content reaching as high as 32% (40% cobalt oxide).
Industry:Mining
A hexagonal mineral, (Co,Ni)<sub>1-y</sub>(MnO<sub>2</sub>)<sub>2-x</sub>(OH)<sub>2-2y+2x</sub>.nH<sub>2</sub>O ; a soft, black, earthy aggregate commonly classed as a variety of "wad," the cobalt content reaching as high as 32% (40% cobalt oxide).
Industry:Mining
A hexagonal mineral, (Co,Ni)<sub>1-y</sub>(MnO<sub>2</sub>)<sub>2-x</sub>(OH)<sub>2-2y+2x</sub>.nH<sub>2</sub>O ; a soft, black, earthy aggregate commonly classed as a variety of "wad," the cobalt content reaching as high as 32% (40% cobalt oxide).
Industry:Mining
A hexagonal mineral, (K,Na)AlSiO<sub>4</sub>; polymorphous with kaliophilite, kalsilite, and panunzite.
Industry:Mining
A hexagonal mineral, (K<sub>2</sub>,Ca)<sub>5</sub>Al<sub>10</sub>Si<sub>26</sub>O<sub>72</sub>.30H<sub>2</sub>O ; zeolite group; commonly intergrown with erionite and levyne as a vein or cavity filling in mafic lavas.
Industry:Mining
A hexagonal mineral, (Mn,Fe)<sub>8</sub>Si<sub>6</sub>O<sub>15</sub>(OH,Cl)<sub>10</sub>; dimorphous with brokenhillite; forms a series with ferropyrosmalite.
Industry:Mining
A hexagonal mineral, (Mn,Mg)Fe<sub>2</sub>Be<sub>2</sub>(PO<sub>4</sub>)<sub>4</sub>.6H<sub>2</sub>O ; forms tufts, rosettes, or botryoidal masses of fibers coating primary minerals, such as muscovite and quartz; in pegmatites, Minas Gerais, Brazil.
Industry:Mining
A hexagonal mineral, (Na,Ca)<sub>3</sub>(Sr,Ba,Ce)<sub>3</sub>(CO<sub>3</sub>)<sub>5</sub>.
Industry:Mining
A hexagonal mineral, (Na,Ca,K)<sub>8</sub>Al<sub>6</sub>Si<sub>6</sub>O<sub>24</sub>(Cl,SO<sub>4</sub>,CO<sub>3</sub>)<sub>2</sub>; cancrinite group; vitreous to pearly. Also spelled davina.
Industry:Mining
A hexagonal mineral, (Na,K)AlSiO<sub>4</sub>; feldspathoid group; greasy luster; forms glassy crystals, colorless grains, coarse crystals with prismatic cleavage, or masses without cleavage; occurs in alkalic igneous rocks; an essential constituent of some sodium-rich rocks, e.g., nepheline syenite. Formerly called nephelite; eleolite.
Industry:Mining
