- Industry: 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 ...
In crystallography, similar in form but not superposable related to each other as the right hand is to the left, hence, one the mirror image of the other.
Industry:Mining
In crystallography, that of a crystal in which three or more inclined faces cut the three crystal axes.
Industry:Mining
In crystallography, that system of crystals in which the faces are referred to four axes--a principal or vertical axis and three lateral axes perpendicular to the vertical axis and intersecting at mutual angles of 60 degrees . Compare: trigonal; trigonal system.
Industry:Mining
In crystallography, the dihexagonal bipyramid, common in crystals of beryl.
Industry:Mining
In crystallography, the longer lateral axis in the orthorhombic and triclinic systems.
Industry:Mining
In crystallography, the number of different families of planes having the same form.
Industry:Mining
In crystallography, the property of having differing types of termination at the two ends of a prismatic crystal. May be reflected in pyroelectric properties, conduction of electric current, etc.
Industry:Mining
In crystallography, the rotation, reflection, or inversion of an attribute of a crystal structure to complete its symmetry. Compare: element
Industry:Mining
