- Industry: 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 ...
An orthorhombic mineral, PbAl<sub>2</sub>(CO<sub>3</sub>)<sub>2</sub>(OH)<sub>4</sub>.H<sub>2</sub>O ; secondary; in aggregate tufts of minute, radiating needles.
Industry:Mining
An orthorhombic mineral, PbBi<sub>2</sub>S<sub>4</sub>; soft; massive, or in needlelike to lathlike crystals in radiating aggregates, commonly intergrown with bismuthinite and other bismuth minerals; sp gr, 7.04 to 7.15; occurs in high-temperature replacement deposits or veins; may be argentiferous (e.g., the variety alaskaite in Colorado) or selenian (e.g., the variety selenbleiwismuthglanz at Falun, Sweden); a source of bismuth.
Industry:Mining
An orthorhombic mineral, PbCl(OH) ; dimorphous with paralaurionite; in ancient leadore slags.
Industry:Mining
An orthorhombic mineral, PbCu(AsO<sub>4</sub>)(OH) ; adelite group; sp gr, 6.4; at Tsumeb, Namibia.
Industry:Mining
An orthorhombic mineral, PbCu(Nd,Gd,Sm,Y)(CO<sub>3</sub>)<sub>3</sub>(OH).1.5H<sub>2</sub>O ; light blue.
Industry:Mining
An orthorhombic mineral, PbCu(VO<sub>4</sub>)(OH) ; descloizite group; zinc replaces copper toward descloizite; conchoidal fracture; a supergene mineral associated with base-metal deposits. Formerly called cuprodescloizite, psittacinite.
Industry:Mining
An orthorhombic mineral, PbCuBi<sub>5</sub>S<sub>9</sub>; occurs in soft, metallic prismatic crystals; sp gr, 6.96; in lead-zinc ores at Gladhammar, Kalmar, Sweden.
Industry:Mining
