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United States Bureau of Mines
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 ...
A triangular, sharp-pointed shovel used in ore dressing.
Industry:Mining
A triangulated truss made up only of sloping members between the horizontal top and bottom members with no verticals.
Industry:Mining
A triclinic and isometric compound, NaAlSiO<sub>4</sub>; a high-temperature polymorph of nepheline.
Industry:Mining
A triclinic and monoclinic mineral, Sr<sub>2</sub>B<sub>11</sub>O<sub>16</sub>(OH)<sub>5</sub>.H<sub>2</sub>O ; trimorphous with p-veatchite and veatchite-A.
Industry:Mining
A triclinic crystal form of two parallel faces with intercepts on two crystallographic axes.
Industry:Mining
A triclinic mineral, (As,Sb)<sub>2</sub>(Ti,V,Fe)<sub>12</sub>O<sub>23</sub>(OH) ; metallic to submetallic black; in drill core samples associated with rutile, pyrite, molybdenite, and arsenopyrite at the Hemlo gold deposit, ON, Can.
Industry:Mining
A triclinic mineral, (Au,Sb)<sub>2</sub>Te<sub>3</sub>; forms tin-white crystals at Montbray, Quebec. Named for the locality.
Industry:Mining
A triclinic mineral, (Ba,Sr)<sub>2</sub>TiMn<sub>2</sub>(SiO<sub>4</sub>)<sub>2</sub>(PO<sub>4</sub>,SO<sub>4</sub>)(OH,Cl) ; forms orange-brown tabular crystals or stellate groups; occurs in an alkali pegmatite at the Noda-Tamagawa Mine, Iwate prefecture, and the Taguchi Mine, Aichi Prefecture, Japan.
Industry:Mining
A triclinic mineral, (Ca,Cu)Al<sub>6</sub>(PO<sub>4</sub>)<sub>4</sub>(OH)<sub>8</sub>.4H<sub>2</sub>O ; turquoise group; occurs in white to pale-blue fibrous crusts.
Industry:Mining
A triclinic mineral, (Ca,Na)((Al,Si)AlSi<sub>2</sub>O<sub>8</sub>) ; CaAl 70 to 50 mol % and NaSi 30 to 50 mol %; plagioclase series of the feldspar group; a common rock-forming mineral in basalt, gabbro, and anorthosite; also in hornfels and siliceous marble.
Industry:Mining