- المجال: 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 amorphous limonite, of a liver-brown color, and containing a small percentage of copper.
Industry:Mining
An amorphous mineral, (Mn,Ca)<sub>2</sub>(Nb,Ti)<sub>5</sub>O<sub>12</sub>.9H<sub>2</sub>O(?) ; forms a series with manganbelyankinite; soft; in ussingite pegmatites in the Lovozero massif, Kola Peninsula, Russia.
Industry:Mining
An amorphous mineral, (Y,U)(Ti,Nb)<sub>2</sub>(O,OH)<sub>6</sub>(?) ; forms black metamict crystals at Kobe, Japan.
Industry:Mining
An amorphous mineral, Al<sub>3</sub>(PO<sub>4</sub>)(OH)<sub>6</sub>.6H<sub>2</sub>O(?) ; may contain small amounts of uranium and thorium; associated with limonite and allophane.
Industry:Mining
An amorphous mineral, Fe<sub>3</sub>(AsO<sub>4</sub>)<sub>2</sub>(OH)<sub>3</sub>.5H<sub>2</sub>O ; occurs with erythrite and annabergite at Cobalt, ON, Canada.
Industry:Mining
An amorphous mineral, H<sub>4</sub>U(UO<sub>2</sub>)<sub>3</sub>(MoO<sub>4</sub>)<sub>7</sub>.18H<sub>2</sub>O .
Industry:Mining
An amorphous mineral, WO<sub>3</sub>.2H<sub>2</sub>O ; resinous; yellow brown.
Industry:Mining
An amorphous mineral, Y<sub>4</sub>FeSi<sub>4</sub>O<sub>14</sub>F<sub>2</sub>(?) ; massive; dark-green where fresh; becomes brick red on alteration.
Industry:Mining
