- 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 ...
Parts of a crystal that have rotated differently during deformation to produce bands of varied orientation within individual grains.
Industry:Mining
Pb(NbO<sub>3</sub>)<sub>2</sub>; a ferroelectric compound having properties that make it useful in hightemperature transducers and in sensing devices. The Curie temperature is 570 degrees C.
Industry:Mining
PbTa<sub>2</sub>O<sub>6</sub>; a compound believed to have ferroelectric properties and of possible interest as a special electroceramic. The Curie temperature is 260 degrees C.
Industry:Mining
PbZrO<sub>3</sub>; a ferroelectric material. It is also used in lead titanate-zirconate (P.Z.T) piezoelectric ceramics.
Industry:Mining
Peat artificially dried at a temperature that causes partial decomposition.
Industry:Mining
Peat composed mainly of bog moss. It is characterized by an open texture, is lightweight, has a high absorbing power, good isolating properties, a clean appearance, and freedom from black dust.
Industry:Mining
Peat composed mostly of disintegrated plants of hypnum, often associated with other mosses and with intermingled rootlets of sedges and other flowing plants. It is formed 1571 chiefly in areas where the ground is only slightly acid, neutral, or slightly alkaline; it is brownish or drab, light, spongy, and matted, and often laminated and porous.
Industry:Mining
Peat composed of bands of vegetable debris alternating with bands of sapropelic matter.
Industry:Mining
