- 업종: Mining
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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 hexagonal mineral, AgBiS<sub>2</sub>; forms prismatic crystals; sp gr, 6.9 .
Industry:Mining
A hexagonal mineral, AgBiS<sub>2</sub>; forms prismatic crystals; sp gr, 6.9 .
Industry:Mining
A hexagonal mineral, AgBiS<sub>2</sub>; forms prismatic crystals; sp gr, 6.9 .
Industry:Mining
A hexagonal mineral, AgI ; soft, sectile, waxy; normally a secondary mineral; in the oxidized zone of silver deposits from primary ores containing argentite, tennantite or tetrahedrite, and native silver; a source of silver; in arid regions where volcanic rocks are common--Southwestern United States, Mexico, Chile, and Broken Hill, New South Wales, Australia. Formerly called iodyrite or iodite. Compare: chlorargyrite; bromargyrite.
Industry:Mining
A hexagonal mineral, Al<sub>5</sub>(OH)<sub>13</sub>(CO<sub>3</sub>).5H<sub>2</sub>O ; compact; fine-grained; in vertical fissures in sandstone at South Bay, Scarborough; in sandstone at Yorkshire, England. Also spelled scarbroeite.
Industry:Mining
A hexagonal mineral, Al<sub>5</sub>(OH)<sub>13</sub>(CO<sub>3</sub>).5H<sub>2</sub>O ; compact; fine-grained; in vertical fissures in sandstone at South Bay, Scarborough; in sandstone at Yorkshire, England. Also spelled scarbroeite.
Industry:Mining
A hexagonal mineral, Ba(Ce,La)<sub>2</sub>(CO<sub>3</sub>)<sub>3</sub>F<sub>2</sub>; rare; in pegmatites in nepheline syenites.
Industry:Mining
A hexagonal mineral, Ba<sub>4</sub>Ca<sub>6</sub>(Si, Al)<sub>20</sub>O<sub>39</sub>)(OH)<sub>2</sub>(SO<sub>4</sub>)<sub>3</sub>.nH<sub>2</sub>O (?) ; cancrinite group.
Industry:Mining
A hexagonal mineral, Be<sub>3</sub>(Sc,Al)<sub>2</sub>Si<sub>6</sub>O<sub>18</sub>; the scandium analog of beryl; blue; at Baveno, Italy; Val Strem, Switzerland; and in central Kazakhstan.
Industry:Mining
