- 行业: Mining
- Number of terms: 33118
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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, CuCl<sub>2</sub>.2H<sub>2</sub>O ; forms a sublimate of soft bluish-green woollike aggregates on the sides of fumaroles.
Industry:Mining
An orthorhombic mineral, CuFe<sub>2</sub>S<sub>3</sub>; dimorphous with isocubanite. Formerly called chalmersite.
Industry:Mining
An orthorhombic mineral, CuPbAsS<sub>3</sub>, with As replaced by Sb toward bournonite; forms small, lead-gray, complex crystals.
Industry:Mining
An orthorhombic mineral, CuSeO<sub>3</sub>.2H<sub>2</sub>O ; dimorphous with clinochalcomenite.
Industry:Mining
An orthorhombic mineral, CuSO<sub>4</sub>; white; it becomes blue upon hydration, thus formerly called hydrocyanite.
Industry:Mining
An orthorhombic mineral, CuTeO<sub>3</sub>.2H<sub>2</sub>O ; blue; at the Teine Mine, Japan.
Industry:Mining
An orthorhombic mineral, Fe<sub>2</sub>(Ti,Fe)O<sub>5</sub>; resembles brookite; occurs in cavities in andesites. See: brookite
Industry:Mining
An orthorhombic mineral, Fe<sub>3+</sub>(SO<sub>4</sub>)(OH).2H<sub>2</sub>O ; dimorphous with butlerite: orange; an alteration product of copiapite.
Industry:Mining
An orthorhombic mineral, Fe<sub>3</sub>BO<sub>5</sub>; ludwigite group; contains both ferrous and ferric iron with ferrous iron replaced by magnesium toward ludwigite; black; forms coarse granular masses; at Riverside, CA.
Industry:Mining
An orthorhombic mineral, FeAsO<sub>4</sub>.2H<sub>2</sub>O ; variscite group; colorless or pale-green to brown; in gossans, oxidized zones of metal veins, and around hot springs; a minor source of arsenic.
Industry:Mining
