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United States Bureau of Mines
Industria: 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 horn or metal spoon used to collect ore particles in gold washing.
Industry:Mining
A hornblende with (OH+F+Cl) less than 1.0.
Industry:Mining
A hornblende with (OH+F+Cl) less than 1.0.
Industry:Mining
A hornblende with (OH+F+Cl) less than 1.0.
Industry:Mining
A hornblende-biotite granite containing large rounded crystals of orthoclase mantled with oligoclase. The name has come to be used most frequently as a textural term where it implies plagioclase rims around orthoclase in plutonic rocks.
Industry:Mining
A hornfels formed by contact metamorphism, and consisting of micas, quartz, and feldspar. Compare: leptynolite Cornwall, England.
Industry:Mining
A hot-blast stove of firebrick on the regenerative principle.
Industry:Mining
A hot-water solution originating within the Earth and carrying dissolved mineral substances.
Industry:Mining
A hue, as distinguished from white, black, or any tone of gray. Opposite of achromatic color.
Industry:Mining
A hydrated ferric phosphate and sulfate mineral, brown or yellowish in color.
Industry:Mining
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