- 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 small cavity in a rock, usually lined with crystals of a different mineral composition than the enclosing rock. Adj: vuggy. Etymol: Cornish vooga, cavern or cavity
Industry:Mining
A small cavity in a rock, usually lined with crystals of a different mineral composition than the enclosing rock. Adj: vuggy. Etymol: Cornish vooga, cavern or cavity
Industry:Mining
A small charge of fine powder placed in contact with a charge of coarse powder to ensure the ignition of the latter.
Industry:Mining
A small charge of material added to a supersaturated solution to initiate precipitation.
Industry:Mining
A small charge, usually of black powder, used to facilitate the ignition of the main charge.
Industry:Mining
A small coal washer to deal with the 1/2- to 0-in (1.3- to 0-cm) range. It works on the same basic principle as the Baum washer, but in view of the small-size material a feldspar (sp gr, 2.6) bed is provided on the perforated grid plates to prevent the bulk of the feed from passing straight through the perforations. Stratification of the raw feed takes place in the usual way.
Industry:Mining
A small concretion; e.g., of galena in sandstone, or a segregation of darker minerals in granite and gneiss.
Industry:Mining
A small cone, made in the laboratory of a mixture of clay and salt, that softens at a definite, known temperature. It is used in the manufacture of refractories. It has also been used in volcanology to determine the approximate temperature of a molten lava.
Industry:Mining
