- المجال: Mining
- Number of terms: 33118
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- 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 monoclinic mineral, Ni<sub>3</sub>(Bi,Pb)<sub>2</sub>S<sub>2</sub>; metallic; bronze; has three cleavages; in a magmatic sulfide deposit, Insizwa, South Africa.
Industry:Mining
A monoclinic mineral, NiSeO<sub>3</sub>.2H<sub>2</sub>O; forms a series with cobaltomenite; rose colored; vitreous luster; no cleavage; conchoidal fracture; strongly pleochroic, X rose, Y pale green, Z brown green; from Pacajake, Bolivia.
Industry:Mining
A monoclinic mineral, Pb(Mn<sub>4+</sub>,Mn<sub>2+</sub>)<sub>8</sub>O<sub>16</sub>; cryptomelane group; pseudotetragonal; at the Coronado vein, Clifton-Morenci district, AZ.
Industry:Mining
A monoclinic mineral, Pb(UO<sub>2</sub>)SiO<sub>4</sub>.H<sub>2</sub>O ; radioactive; an oxidation product of uraninite; at Kasolo, Katanga, Zaire. Formerly called droogmansite.
Industry:Mining
A monoclinic mineral, Pb<sub>14</sub>(As,Sb)<sub>6</sub>S<sub>23</sub>; pseudohexagonal; forms a series with geochronite in which antimony increases relative to arsenic.
Industry:Mining
A monoclinic mineral, Pb<sub>14</sub>(AsO<sub>4</sub>)<sub>2</sub>O<sub>9</sub>Cl<sub>4</sub>; forms aggregates of thin yellow scales; at Laangban, Sweden.
Industry:Mining
A monoclinic mineral, Pb<sub>14</sub>(Sb,As)<sub>6</sub>S<sub>23</sub>; forms a series with jordanite; soft; sp gr, 6.4 to 6.5; associated with galena, jamesonite, and boulangerite; in lead ores in Bolivia, Germany, Sweden, and the United States.
Industry:Mining
A monoclinic mineral, Pb<sub>14</sub>(Sb,As)<sub>6</sub>S<sub>23</sub>; forms a series with jordanite; soft; sp gr, 6.4 to 6.5; associated with galena, jamesonite, and boulangerite; in lead ores in Bolivia, Germany, Sweden, and the United States.
Industry:Mining
A monoclinic mineral, Pb<sub>14</sub>Ag<sub>5</sub>Sb<sub>21</sub>S<sub>48</sub>(?) ; soft; forms deeply striated prisms at Kisbanya, Romania, where it is associated with semseyite, pyrite, galena, and sphalerite.
Industry:Mining
A monoclinic mineral, Pb<sub>16</sub>(AsO<sub>4</sub>)<sub>4</sub>Cl<sub>14</sub>(OH)<sub>6</sub>or Pb<sub>16</sub>(AsO<sub>4</sub>)<sub>4</sub>Cl<sub>14</sub>O<sub>2</sub>(OH)<sub>2</sub>; forms stubby tablets; sp gr, 7.1; associated with laurionite, matlockite, and fiedlerite on altered slags at Laurium, Greece.
Industry:Mining
