- 行业: Mining
- Number of terms: 33118
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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 ...
A prefix meaning large, long; visibly large, e.g., macrocrystalline. Compare: micro<b>macro- axis
Industry:Mining
A prefix meaning one thousandth of. It divides a basic unit by 1,000, or multiplies it by 10<sub>-3</sub>; abbrev., m. Commonly applied to units of measure in the metric and cgs systems; e.g., 1 mg = 0.001 g.
Industry:Mining
A prefix signifying many. Used in many mineral names, such as polybasite, polycrase, polyhalite, and polyaugite.
Industry:Mining