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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 ...
Having the characteristic of a layered rock, the laminae of which have been penetrated by numerous thin, roughly parallel sheets of igneous material, usually granitic. Etymol: French, bed-by-bed. Compare: injection gneiss; injection metamorphism.
Industry:Mining
Having the cleavage of plagioclase; breaking obliquely.
Industry:Mining
Having the form of a bunch of grapes. Said of minerals, e.g., hematite with a surface of spherical shapes; also said of a crystalline aggregate in which the spherical shapes are composed of radiating crystals. Compare: colloform; colloid minerals; reniform.
Industry:Mining
Having the form of small stones.
Industry:Mining
Having the form or the appearance of glass; glassy.
Industry:Mining
Having the property of or acting like cement, such as certain limestones and tuffs when used in the surfacing of roads.
Industry:Mining
Having the property to produce fluorescence.
Industry:Mining
Having the symmetry or shape of a tetrahedron.
Industry:Mining
Having two sides, as a figure; having two faces, as a crystal.
Industry:Mining
Head losses resulting from changes in direction of flow or area of duct. They also occur at the inlet or discharge of a system, at splits or junctions of two or more currents of air, and at obstructions in airways.
Industry:Mining