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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 trigonal mineral, MgCO<sub>3</sub>; calcite group; rhombohedral cleavage; in veins in serpentinite and peridotite, magnesium-rich schist, and altered dolomitic marbles.
Industry:Mining
A trigonal mineral, MgCO<sub>3</sub>; calcite group; rhombohedral cleavage; in veins in serpentinite and peridotite, magnesium-rich schist, and altered dolomitic marbles.
Industry:Mining
A trigonal mineral, MgCO<sub>3</sub>; calcite group; rhombohedral cleavage; in veins in serpentinite and peridotite, magnesium-rich schist, and altered dolomitic marbles.
Industry:Mining
A trigonal mineral, MgTiO<sub>3</sub>; ilmenite group; forms a series with ilmenite; in highly metamorphosed magnesian marbles associated with brucite, spinel, or diopside; in serpentinites with chromium-rich chlorites, and in gem gravels of Sri Lanka.
Industry:Mining
A trigonal mineral, Mn(OH)<sub>2</sub>; brucite group; soft; pearly white darkening on exposure; has perfect basal cleavage.
Industry:Mining
A trigonal mineral, Mn<sub>2</sub>SbFeO<sub>6</sub>. Originally named melanostibian.
Industry:Mining
A trigonal mineral, Mn<sub>26</sub>As<sub>18</sub>O<sub>50</sub>(OH)<sub>4</sub>(CO<sub>3</sub>) ; black; near Laangban, Sweden.
Industry:Mining
A trigonal mineral, MnCO<sub>3</sub>; calcite group, with Mn replaced by Fe toward siderite, Ca toward calcite, Mg, Zn, Co, and Cd; rhombohedral cleavage; in hydrothermal veins, residual manganese deposits, and pegmatites; a minor source of manganese.
Industry:Mining
A trigonal mineral, MnTiO<sub>3</sub>; ilmenite group; forms a series with ilmenite; blood red.
Industry:Mining
A trigonal mineral, Na<sub>12</sub>Mg<sub>7</sub>(SO<sub>4</sub>)<sub>13</sub>.15H<sub>2</sub>O ; white; water soluble. Also spelled loeweite.
Industry:Mining