- 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 ...
Person who works as a member of a crew performing any one or a combination of duties concerned with extracting cadmium, lead sulfate, and zinc oxide from dust recovered in Cottrell precipitators.
Industry:Mining
Pertaining or relating to a compound that contains no carbon. Compare: organic
Industry:Mining
Pertaining to a flaky schistosity caused by an abundance of minerals like micas and chlorites with a general parallel arrangement.
Industry:Mining
Pertaining to a layered-mineral structure of the kaolinite-serpentine, talc-pyrophyllite, mica, or chlorite groups in which all three of the positions with octahedral coordination are occupied, mainly by divalent cations, such as Mg, or by a mix of monovalent and trivalent cations, such as Li and Al. Compare: dioctahedral
Industry:Mining
Pertaining to a metamorphic-rock texture consisting of bands of inclusions that indicate original bedding or schistosity of the parent rock and cut through later-formed crystals of the metamorphic rock. The relict inclusions commonly occur in porphyroblasts as curved and contorted strings. The term was originally, but is no longer, confined to microscopic texture. Also spelled: helizitic. Compare: poikiloblastic
Industry:Mining
Pertaining to a mineral, structure, or feature of an earlier rock that has persisted in a later rock in spite of processes tending to destroy it. Also, such a mineral, structure, or other feature.
Industry:Mining
Pertaining to a pyroclastic rock structure characterized by fragmented bits of glass; also, said of a rock having such a structure.
Industry:Mining
Pertaining to a segment of geologic time intermediate between Late and Early, or to rocks intermediate between Upper and Lower. Thus, rocks of the Middle Jurassic Series were formed during the Middle Jurassic Epoch. Compare: Upper; Lower.
Industry:Mining
Pertaining to a texture in metamorphic rock that consists of intricately intergrown and interpenetrating constituents, usually with rodlike shapes.
Industry:Mining
Pertaining to a type of crystalloblastic texture in a metamorphic rock in which the essential mineral constituents are approx. of equal size. Compare: crystalloblastic; heteroblastic.
Industry:Mining
