- 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 ...
Transferring a point at one level to a point vertically below or above it by means of a weight (plumb bob or plummet) suspended at the end of a string or wire (plumbline).
Industry:Mining
Transformation of a constituent in an alloy; e.g., austenite into pearlite.
Industry:Mining
Translucent calcite composed of fibrous crystals, which, like fibrous gypsum, with which it is often confused, causes a silky sheen. When cut cabochon, it produces a girasol or chatoyant effect, but not a true cat's-eye. Also like fibrous gypsum, it is called "satin spar" but less correctly.
Industry:Mining
Translucent to opaque and white to bluish white opaline silica of organic origin (deposited with the joints of a bamboo shoot), valued in the East Indies as a medicine and used in native jewelry. Also spelled tabaschir or tabashir.
Industry:Mining
Translucent, generally layered, cryptocrystalline calcite with colors in pastel shades, particularly yellow, brown, and green.
Industry:Mining
Transparent muscovite without stains and with a smooth surface in reflected light.
Industry:Mining
Transparent quartz containing acicular rutile, tourmaline, goethite, actinolite, or other mineral.
Industry:Mining
Traveling without load, except from the dumping area to the loading point.
Industry:Mining
Treatment by chlorination of tinbearing scrap for recovery of tin as its chloride.
Industry:Mining
Treatment of a parcel of material in isolation, as distinct from the treatment of a continuous stream of ore.
Industry:Mining
