- المجال: 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 relatively pure or high-grade variety of talc suitable for use in electronic insulators, the purest commercial form of talc.
Industry:Mining
A relatively pure or high-grade variety of talc suitable for use in electronic insulators, the purest commercial form of talc.
Industry:Mining
A relatively short interruption in sedimentation, involving only a brief interval of time, with little or no erosion before deposition is resumed; a paraconformity of very small time value.
Industry:Mining
A relatively slender neck or column of rock capped by a wider mass of rock and produced by undercutting as a result of wind abrasion (as in the Southwestern United States.) or by differential weathering.
Industry:Mining
A relict mineral that was a constituent of the original rock, whether igneous or sedimentary.
Industry:Mining
A relict mineral that was not only stable under the conditions prevailing while it was formed but also under newly imposed conditions of metamorphism. Compare: unstable relict
Industry:Mining
A relict texture in a metamorphic rock in which remnants of the original granitic texture remain.
Industry:Mining
A relict that is unstable under newly imposed conditions of metamorphism, but persists in a perhaps altered but still recognizable form owing to the low velocity of transformation. A preferable term would be metastable relict. Compare: stable relict
Industry:Mining
A relief map made by the application of the stereoscopic principle to aerial or terrestrial photographs.
Industry:Mining
A relief map made by the application of the stereoscopic principle to aerial or terrestrial photographs.
Industry:Mining
