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United States Bureau of Mines
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 fishing tool used to recover broken drill rods from a borehole.
Industry:Mining
A fishing tool.
Industry:Mining
A fishtail-, spudding-, or other-type bit used exclusively for beginning a borehole.
Industry:Mining
A fissile or schistose variety of hornfels containing mica, quartz, and feldspar, with or without accessories, such as andalusite and cordierite. The term was originated by Cordier in 1868. Compare: cornubianite.
Industry:Mining
A fissure that is parallel with the strike of the deposit.
Industry:Mining
A fissure that is the result of faulting. It may or may not be filled with vein material.
Industry:Mining
A fissure whose mineral filling is derived from the country rock by the action of percolating water. Compare: infiltration vein
Industry:Mining
A fissure, joint, or small cavity in a rock or quartz vein. Also spelled quere, queere, and qweear (U.K.).
Industry:Mining
A five- or six-sided enclosure constructed in the earth by backfilling cuts around an orebody or orebody zone with material that is impervious to solutions so that aqueous 1616 leaching can be conducted for the extraction of mineral values from the isolated ore.
Industry:Mining
A five-sided step-cut gem resembling a shoulder ornament (epaulet) in outline.
Industry:Mining
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