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United States Bureau of Mines
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 mineral with no definite crystalline structure.
Industry:Mining
A mineral zone that contracts, expands, and again contracts downwards.
Industry:Mining
A mineral, (Ag,Au)Te ; soft; heavy; gray-white; in tabular crystals with perfect cleavage; an ore mineral.
Industry:Mining
A mineral, (Cu,Sn,Zn)S, containing 30.36% copper, 25.25% tin, 11.16% zinc, and 23.40% sulfur. In quartz sulfide ore from Kester, Magadan, Yakutia, northeast Siberia, Russia. Named from locality.
Industry:Mining
A mineral, (Cu,Sn,Zn)S, containing 30.36% copper, 25.25% tin, 11.16% zinc, and 23.40% sulfur. In quartz sulfide ore from Kester, Magadan, Yakutia, northeast Siberia, Russia. Named from locality.
Industry:Mining
A mineral, (Cu,Sn,Zn)S, containing 30.36% copper, 25.25% tin, 11.16% zinc, and 23.40% sulfur. In quartz sulfide ore from Kester, Magadan, Yakutia, northeast Siberia, Russia. Named from locality.
Industry:Mining
A mineral, (Mg,Cu,Zn)SO<sub>4</sub>.5H<sub>2</sub>O , containing 5.60% ZnO, 9.40% MgO, 9.00% CuO, and 39.07% H<sub>2</sub>O ; from the Comstock Lode, NV.
Industry:Mining
A mineral, (Mg,Cu,Zn)SO<sub>4</sub>.5H<sub>2</sub>O , containing 5.60% ZnO, 9.40% MgO, 9.00% CuO, and 39.07% H<sub>2</sub>O ; from the Comstock Lode, NV.
Industry:Mining
A mineral, (Na,Ca)(Fe,Mn)Si<sub>2</sub>O<sub>6</sub>; brown to black; a variety of manganoan aegirine.
Industry:Mining
A mineral, (Na,Ca,Pb)<sub>2</sub>U<sub>2</sub>(O,OH)<sub>7</sub>; strongly radioactive; metamict; massive; dense; forms as an alteration product of uraninite.
Industry:Mining
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