- 行业: 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 fused mass of synthetic material up to 5 cm long, pear or carrot-shaped, particularly as produced by the Verneuil or Crochralshi processes in the production of synthetic sapphire, ruby, spinel, or rutile. Etymol: Fr. "ball."
Industry:Mining
A gabbro in which the pyroxene or olivine, or both, are exceptionally high in iron.
Industry:Mining
A gabbro that is composed chiefly of calcic plagioclase (e.g., labradorite) and olivine with little or no pyroxene. Such rocks commonly are speckled like trout.
Industry:Mining
A gabbro that is composed chiefly of calcic plagioclase (e.g., labradorite) and olivine with little or no pyroxene. Such rocks commonly are speckled like trout.
Industry:Mining
A gabbro that is composed chiefly of calcic plagioclase (e.g., labradorite) and olivine with little or no pyroxene. Such rocks commonly are speckled like trout.
Industry:Mining
A gage which automatically records the level of water in a stream or tank, or velocity and pressure in a pipe. It is operated by a float or by a submerged air tank fitted with a rubber diaphragm.
Industry:Mining
A galvanic cell resulting from inhomogeneities between areas on a metal surface in an electrolyte. The inhomogeneities may be of physical or chemical nature in either the metal or its environment.
Industry:Mining
