- 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 naturally occurring soft paraffin wax; forms veinlike masses in ironstone nodules associated with coal-bearing strata, South Wales; in limestone cavities, France.
Industry:Mining
A naturally occurring soft paraffin wax; forms veinlike masses in ironstone nodules associated with coal-bearing strata, South Wales; in limestone cavities, France.
Industry:Mining
A naturally occurring soft paraffin wax; forms veinlike masses in ironstone nodules associated with coal-bearing strata, South Wales; in limestone cavities, France.
Industry:Mining
A naturally occurring soft paraffin wax; forms veinlike masses in ironstone nodules associated with coal-bearing strata, South Wales; in limestone cavities, France.
Industry:Mining
A naturally occurring uranium mineral, U(SiO<sub>4</sub>)<sub>1-x</sub>(OH)<sub>4x</sub>; sp gr, 5.1; luster adamantine; color black; commonly fine-grained and mixed with organic matter and other minerals. Found in Colorado, Utah, Wyoming, and Arizona. An important ore of uranium in some mines on the Colorado plateau.
Industry:Mining
A near similarity of crystalline forms between unlike chemical compounds.
Industry:Mining
A nearly black earthy manganese or wad, streaked with dark red markings, occurring in parts of Europe.
Industry:Mining
A nearly vertical fracture developed by thermal contraction in rock or in frozen ground with appreciable ice content. Frost cracks commonly intersect to form polygonal patterns in plan view.
Industry:Mining
A needle, consisting of a steel magnet, similar to that in a miners' dial, but pivoted at the center so as to be free to rotate vertically. It is used to locate the presence of shallow deposits of magnetic ores. The magnetometer has now replaced the dipping needle for large-scale prospecting work.
Industry:Mining
