- 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 monoclinic mineral, Mg<sub>4</sub>Si<sub>6</sub>O<sub>15</sub>(OH)<sub>2</sub>.6H<sub>2</sub>O ; soft; sp gr, 2 but fibrous dry masses float on water; occurs in veins in calcite and in alluvial deposits formed from weathering of serpentine masses, chiefly in Asia Minor, as meerschaum; may be used in making pipes, ornamental carvings.
Industry:Mining
A monoclinic mineral, Mg<sub>4</sub>Si<sub>6</sub>O<sub>15</sub>(OH)<sub>2</sub>.6H<sub>2</sub>O ; soft; sp gr, 2 but fibrous dry masses float on water; occurs in veins in calcite and in alluvial deposits formed from weathering of serpentine masses, chiefly in Asia Minor, as meerschaum; may be used in making pipes, ornamental carvings.
Industry:Mining
A monoclinic mineral, Mg<sub>5</sub>(BO<sub>3</sub>)O(OH)<sub>5</sub>.2H<sub>2</sub>O; colorless; forms pseudohexagonal prisms; at Commercial quarry, Crestmore, CA.
Industry:Mining
A monoclinic mineral, Mg<sub>5</sub>(CO<sub>3</sub>)<sub>4</sub>(OH)<sub>2</sub>.4H<sub>2</sub>O; pseudo-orthorhombic; in lowtemperature veins in serpentinite.
Industry:Mining
A monoclinic mineral, MgAl<sub>2</sub>(SO<sub>4</sub>)<sub>4</sub>.22H<sub>2</sub>O ; hallotrichite group; forms acicular crystals and tufts; astringent taste; a product of surficial acid sulfate attack on aluminous rocks in mines and arid regions.
Industry:Mining
A monoclinic mineral, MgAl<sub>2</sub>(SO<sub>4</sub>)<sub>4</sub>.22H<sub>2</sub>O ; hallotrichite group; forms acicular crystals and tufts; astringent taste; a product of surficial acid sulfate attack on aluminous rocks in mines and arid regions.
Industry:Mining
A monoclinic mineral, MgB<sub>3</sub>O<sub>3</sub>(OH)<sub>5</sub>.5H<sub>2</sub>O ; forms nodular aggregates or acicular crystals; named from the locality, Inder, Kazakhstan.
Industry:Mining
A monoclinic mineral, MgCO<sub>3</sub>.5H<sub>2</sub>O ; forms small stalactites that alter to nesquehonite in mines near Lansford, PA.
Industry:Mining
A monoclinic mineral, MgFe<sub>3+</sub>(SO<sub>4</sub>)<sub>2</sub>(OH).7H<sub>2</sub>O ; reniform, botryoidal, or globular; hyacinth-red to orange; in secondary sulfate deposits capping sulfide ore deposits.
Industry:Mining
