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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 ...
Applied to quarrystone after the moisture has dried out.
Industry:Mining
Applied to rocks and/or minerals that have originated through the process of contact metamorphism.
Industry:Mining
Applied to rocks composed of large grains; used mainly in a relative sense, but an average size greater than 5 mm in diameter has been suggested. Compare: medium-grained; fine-grained.
Industry:Mining
Applied to rocks in which the joints are very close together.
Industry:Mining
Applied to rocks resulting from consolidated sediments and accordingly exhibiting planes of separation designated bedding planes.
Industry:Mining
Applied to strata or layers that contain innumerable fragments of fossil bones, scales, teeth, coprolites, and other organic remains.
Industry:Mining
Applied to that kind of force exerted by an explosive that tends to shatter the rock into fragments.
Industry:Mining
Applied to the degree of luster of a mineral, reflecting with brilliancy and giving welldefined images, such as hematite or cassiterite.
Industry:Mining
Applied to the group of contact-metamorphic rocks represented by spotted slates, to denote its spotted or knotted character. The term may be applied either to the rock or to its structures.
Industry:Mining
Applied to the luster of minerals. Having the luster of oily glass, as elaeolite.
Industry:Mining