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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 ...
Variety of andalusite containing manganese. Alternate spelling of manganandalusite.
Industry:Mining
Variety of attritus that is transparent in thin section.
Industry:Mining
Variety of bituminous material derived from a mud volcano.
Industry:Mining
Variety of bort built of concentric shells of clouded diamond and cementlike material.
Industry:Mining
Variety of hematite, Fe<sub>2</sub>O<sub>3</sub>, black, lustrous, metallic gleam. Mohs hardness, 5.5 to 6.5. May be micaceous in form. Contains 70% iron; sp gr, 4.9 to 5.3.
Industry:Mining
Variety of nigritite found in a finely dispersed state in argillaceous rocks. Compare: keronigritite; humonigritite.
Industry:Mining
Variety of petroleum found in Russia.
Industry:Mining
Variety of resin.
Industry:Mining
Various auger and/or tubular devices designed to obtain unwetted samples of soft rock material, such as clay, sand, soil, etc., by drilling procedures wherein water or other fluid is not circulated during the operation.
Industry:Mining
Various hydraulically operated mechanized machines designed to install roof bolts. Two workers can install up to 200 bolts per shift. Units are available in both standard and special design to satisfy requirements in different mines.
Industry:Mining
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