- Industry: 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 ...
An element essential to the composition and the structure of a mineral.
Industry:Mining
An element normally forming sulfides, selenides, tellurides, arsenides, antimonides, and/or sulfosalts, or occurring uncombined as a native element; i.e., an element of primary ore deposits.
Industry:Mining
An element or compound that has been made radioactive so that it can be followed (traced) easily in industrial and biological processes. Radiation emitted by the tracer (radioisotope) pinpoints its location. Abbrev., tcr.
Industry:Mining
An element present in an alloy or other material in small quantities after some type of treatment, but not added intentionally.
Industry:Mining
An element that is characteristically concentrated in ordinary rock types as opposed to ore deposits. Compare: metallogenic element
Industry:Mining
An element that is generally too rare and unconcentrated to become an essential constituent of a mineral, and that therefore occurs principally as a substituent of the more abundant elements.
Industry:Mining
An elementary device consisting of one anode and its cathode that has the characteristic of conducting current effectively in only one direction.
Industry:Mining
An elementary particle emitted from a nucleus during radioactive decay. It has a single electrical charge and a mass equal to 1/1837 that of a proton. A negatively charged beta particle is physically identical to an electron. If the beta particle is positively charged, it is called a positron.
Industry:Mining
An elementary particle with a single positive electrical charge and a mass approx. 1,847 times that of an electron. The atomic number of an atom equals the number of protons in its nucleus.
Industry:Mining
An elementary particle; the contraction of pi-meson. The mass of a charged pion is about 273 times that of an electron. An electrically neutral pion has a mass 264 times that of an electron.
Industry:Mining
