- 行业: 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 depression between the offset ends of a ridge developed on a resistant rock layer that has been displaced by a transverse fault.
Industry:Mining
A depression in the ground surface formed by the melting of a large, detached block of stagnant ice wholly or partly buried by glacial drift.
Industry:Mining
A derivative from thio-urea. In the flotation process, it is used as a collector agent of low solubility in water; it is sometimes used in copper or galena flotation.
Industry:Mining
A description of the borehole based on the daily logs from the driller and the samples and the report of the geologist.
Industry:Mining
A description of the borehole based on the daily logs from the driller.
Industry:Mining
A descriptive name for rocks now known as monzonite, in which the plagioclase is at least as calcic as labradorite.
Industry:Mining
A descriptive term applied to igneous rocks with an orbicular texture in which early phenocrysts form the nuclei of the orbicules (Eskola, 1938). Compare: isothrausmatic; heterothrausmatic; homeothrausmatic.
Industry:Mining
A descriptive term applied to igneous rocks with an orbicular texture in which the nuclei of the orbicules are composed of the same rock as the groundmass. Compare: crystallothrausmatic; homeothrausmatic; heterothrausmatic.
Industry:Mining
