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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 variety of native gold containing mercury and silver, with gold averaging approx. 40%, commonly associated with platinum in yellowish-white grains that crumble easily. Compare: amalgam
Industry:Mining
A variety of native iron occurring as grains in petrified wood.
Industry:Mining
A variety of native platinum alloyed with iron.
Industry:Mining
A variety of natural asphalt occurring in the Uinta Valley, Utah, as rounded masses of brilliant black solid hydrocarbon.
Industry:Mining
A variety of natural asphalt occurring in the Uinta Valley, Utah, as rounded masses of brilliant black solid hydrocarbon.
Industry:Mining
A variety of natural asphalt occurring in the Uinta Valley, Utah, as rounded masses of brilliant black solid hydrocarbon.
Industry:Mining
A variety of nephrite jade. Also spelled axestone.
Industry:Mining
A variety of novaculite found in the Ouachita Mountains of western Arkansas. Also, a whetstone made of Arkansas stone.
Industry:Mining
A variety of oil shale from Hartley, New South Wales.
Industry:Mining
A variety of opal having an apple-green fluorescence reputedly caused by the presence of minute amounts of uranium.
Industry:Mining