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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 pyroxene mineral, (Na,Al,Ca,Mg)Si<sub>2</sub>O<sub>6</sub>; midway in composition between diopside and jadeite; pea-green; massive; at Tuxtla, Mexico. Formerly called diopside-jadeite. Also spelled tuxlite.
Industry:Mining
A pyroxenite composed almost entirely of bronzite.
Industry:Mining
A quadrilateral that has only two sides parallel.
Industry:Mining
A qualitative analysis of a mineral made by intensely heating a powdered or dissolved sample in a flame and observing the flame's color, which is indicative of the element involved; e.g., green from copper. Compare: flame photometry
Industry:Mining
A qualitative measure of the ability of an explosive or blasting agent to withstand exposure to water without deteriorating or becoming desensitized.
Industry:Mining
A quantitative chemical-mineralogic classification of igneous rocks proposed in 1922 by F. von Wolff.
Industry:Mining
A quantitative mineralogic classification of igneous rocks developed by the petrographer Albert Johannsen (1939). Compare: Johannsen number
Industry:Mining
A quantitative mineralogic classification of igneous rocks proposed by E. Troeger in 1935.
Industry:Mining
A quantity fully described by a number, such as a speed that has no associated direction.
Industry:Mining
A quantity of coal that is to be sampled to a specified accuracy. It is used in contradistinction to the sampling of a coal received regularly at a given point.
Industry:Mining