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United States Bureau of Mines
行业: 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 native mineral salt of India, predominantly sodium chloride with large amounts of sodium sulfate, the composition varying greatly with locality where obtained. Synthetic Khari salt has 40% anhydrous sodium sulfate.
Industry:Mining
A native ocher of a deep orange-yellow color.
Industry:Mining
A native yellow vanadium oxide found near Lake Superior.
Industry:Mining
A natural accumulation in beach sand of heavy minerals selectively concentrated (by wave, current, or surf action) from the ordinary beach sands in which they were originally present as accessory minerals; esp. a beach placer.
Industry:Mining
A natural alloy of iridium and osmium, (Ir,Os). Analyses show 43% to 77% iridium, 17% to 49% osmium, and a little rhodium, ruthenium, platinum, iron, and copper. Rhombohedral.
Industry:Mining
A natural alloy of iridium and osmium, (Ir,Os). Analyses show 43% to 77% iridium, 17% to 49% osmium, and a little rhodium, ruthenium, platinum, iron, and copper. Rhombohedral.
Industry:Mining
A natural antimonide of silver, Ag<sub>3</sub>Sb ; color and streak, silver-white; luster, metallic; usually tarnished; Mohs hardness, 3.5 to 4; sp gr, 9.74; found in Germany, France, and Canada. An ore of silver.
Industry:Mining
A natural antimonide of silver, Ag<sub>3</sub>Sb ; color and streak, silver-white; luster, metallic; usually tarnished; Mohs hardness, 3.5 to 4; sp gr, 9.74; found in Germany, France, and Canada. An ore of silver.
Industry:Mining
A natural earth current of local origin, such as one arising from the oxidation of a sulfide deposit. A term used in electrical prospecting.
Industry:Mining
A natural glass produced by the cooling of molten lava, or a liquid fraction of it, too rapidly to permit crystallization. Examples are obsidian, pitchstone, tachylyte, and the glassy mesostasis of many extrusive rocks. Compare: glass
Industry:Mining
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