- 行业: 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, Pb<sub>9</sub>Sb<sub>8</sub>S<sub>21</sub>; metallic; soft; sp gr, 5.8.
Industry:Mining
A monoclinic mineral, PbCl(OH); dimorphous with laurionite; soft; forms white pseudoorthorhombic prismatic crystals; a secondary mineral in lead deposits.
Industry:Mining
A monoclinic mineral, PbCrO<sub>4</sub>; bright-red, yellowish-red, or orange.
Industry:Mining
A monoclinic mineral, PbCrO<sub>4</sub>; bright-red, yellowish-red, or orange.
Industry:Mining
A monoclinic mineral, PbCrO<sub>4</sub>; bright-red, yellowish-red, or orange.
Industry:Mining
A monoclinic mineral, PbCu<sub>3</sub>(AsO<sub>4</sub>)<sub>2</sub>(OH)<sub>2</sub>.H<sub>2</sub>O ; forms minute grass-green to blackish-green mammillary masses; in Cornwall, U.K.
Industry:Mining
A monoclinic mineral, PbHAsO<sub>4</sub>; forms colorless thin crystalline plates; resembles selenite; at Tsumeb, Namibia.
Industry:Mining
A monoclinic mineral, PbMnO<sub>2</sub>(OH); occurs in pitch-black crystals with perfect cleavage; at Laangban, Sweden.
Industry:Mining