- المجال: 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 ...
A variety of andalusite containing 6.91% Mn<sub>2</sub>O<sub>3</sub>. It differs from ordinary andalusite in its grass-green color and strong pleochroism. From Vestana, Sweden.
Industry:Mining
A variety of andalusite, resembling chiastolite, showing in cross section a maltese cross of pure material separated by areas of impure material.
Industry:Mining
A variety of asbestos that is compact, fibrous, and gray to brown in color, resembling wood.
Industry:Mining
A variety of asbestos that is compact, fibrous, and gray to brown in color, resembling wood.
Industry:Mining