- 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 ...
Of less commercial value than those called precious; applied esp. to such stones as amethyst, garnet, jade, and tourmaline.
Industry:Mining
Of metals: the elastic limit, elongation, fatigue range, hardness, maximum stress, reduction in area, shock resistance, and yield point.
Industry:Mining
Of minerals, a natural resemblance to the carving or engraving on precious stones.
Industry:Mining
Of or pertaining to a map. A cartographic unit in geology is a rock or a group of rocks that is shown on a geologic map by a single color or pattern.
Industry:Mining
Of or pertaining to a mineral, object, area, or locale possessing the properties of a magnet.
Industry:Mining
