- 産業: 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 composite rock whose banding is wholly or partly caused by lit-par-lit injection of granitic magma into layered rock.
Industry:Mining
A composite screen for draining and spraying the product from a dense-medium bath to remove adherent medium solids.
Industry:Mining
A composition of two or more substances, each remaining distinct, and generally capable of separation by mechanical means.
Industry:Mining
A compositional banding in gneisses that is not primary in origin, but rather is the result of segregation of material from an originally more nearly homogeneous rock.
Industry:Mining
A compositional banding that is parallel to the cleavage rather than to the bedding. It results from the mechanical movement of incompetent material, such as argillaceous rocks, into the cleavage planes in a more competent rock, such as sandstone. Ordinarily, the argillaceous bands are only a few millimeters thick.
Industry:Mining
A compositional category for classifying igneous rocks; e.g., the rhyolite-granite clan. A clan may be defined either by mineralogical or by chemical composition. Clans are subdivided into families.
Industry:Mining
A compound analogous to zircon, therefore, the suggested name hafnon. It can be synthesized from the oxides at 1,550 degrees C. Thermal expansion (150 to 1,300 degrees C), 3.6 X 10<sub>-6</sub>.
Industry:Mining
A compound derived from the hydrocarbon benzene, C<sub>6</sub>H<sub>6</sub>, distinguished from that derived from methane, CH<sub>4</sub>.
Industry:Mining
A compound direct-acting pumping engine, generally of the horizontal class.
Industry:Mining
