- 行业: Mining
- Number of terms: 33118
- Number of blossaries: 0
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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 ...
The property of certain substances by virtue of which they are repelled from both poles of a magnet and tend to set with the longer axis across the lines of magnetic force. Compare: ferrimagnetism; paramagnetism.
Industry:Mining
The property of crystal structures wherein atomic particles show periodicity over large numbers of atomic diameters and each atomic particle has specific relationships with lattice points. Compare: short-range order; disorder. See: superlattice; superstructure.
Industry:Mining
The property of minerals to emit light when heated. It results from the release of energy stored by displaced electrons trapped in a crystal structure.
Industry:Mining
The property of rocks having thin and nearly parallel bands of different textures, colors, or minerals. Banded coal has alternating bands of different types.
Industry:Mining
The property of some chrysoberyl and other minerals and stones to appear green in sunlight, but red under incandescent illumination.
Industry:Mining
The property of some silicate minerals (e.g., stilbite, vermiculite, scapolite) or rocks (e.g., perlite) to expand permanently when heated to form an irregular or vesicular structure. Compare: exfoliation
Industry:Mining
The property or quality of being elastic; said of a body that returns to its original form or condition after a displacing force is removed.
Industry:Mining
The property or tendency of a rock to split along closely spaced planar structures, produced by deformation or metamorphism.
Industry:Mining
The property possessed by certain solid substances to influence the surface tension of liquids.
Industry:Mining
The property shown by certain minerals or rocks of breaking or fracturing into elongated fragments like splinters of wood.
Industry:Mining
