- 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 coarse-grained plutonic rock containing basic plagioclase (labradorite) as the chief constituent and differing from gabbro by the presence of orthopyroxene (hypersthene) as the dominant mafic mineral. Compare: hypersthenite.
Industry:Mining
A coarse-grained variety of common salt obtained by evaporating seawater in shallow bays or pits by the heat of the sun.
Industry:Mining
A coarse-grained variety of galena used by potters in preparing a green glaze.
Industry:Mining
A coarse-grained, deep-seated ultramafic rock, consisting essentially of garnet (almandine-pyrope) and pyroxene (omphacite). Rutile, kyanite, and quartz are typically present.
Industry:Mining
A coarse-grained, holocrystalline igneous rock consisting of 90% pyroxenes. It may contain biotite, hornblende, or olivine as accessories.
Industry:Mining
A coarser sized fraction, which leaves via apex aperture of hydrocyclone.
Industry:Mining
A coarse-threaded joint in the head of a double-tube core barrel. If the core barrel becomes lodged in the borehole, the safety joint, inner tube, and core can be removed by backing off at the safety joint, thereby facilitating the subsequent fishing job.
Industry:Mining
A coating of binder applied to a surface of natural compacted or stabilized soil before surface dressing.
Industry:Mining
