- 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 ore-deposit pattern in which adjacent, more or less parallel veins are connected by diagonal veins or veinlets.
Industry:Mining
An ore-reserve computation method in which an assumption is made that the area of influence of each drill hole extends halfway to the neighboring drill holes. Therefore, thickness and grade must vary uniformly in opposite directions and in such cases errors tend to be compensating. Where the thickness and grade vary in the same direction, the errors will accumulate and cause erroneous results.
Industry:Mining
An organic compound formed through the burning of pyritous shale in Bohemia, former Czechoslovakia. Later renamed kratochvilite.
Industry:Mining
An organic excrement, mainly of invertebrates, occurring esp. in modern marine deposits but also fossilized in some sedimentary rocks; usually of a simple ovoid form less than a millimeter in length, or more rarely rod-shaped with longitudinal or transverse sculpturing, devoid of internal structure, and smaller than a coprolite. Also spelled faecal pellet.
Industry:Mining
An organic mud composed of humic material corresponding in rank to sapropel.
Industry:Mining
An organic reef in which algae are or were the principal organisms producing calcium carbonate, e.g., off the coast of Bermuda. The reefs may be up to 10 m high and more than 15 m across.
Industry:Mining
An organism that lives in the presence of free oxygen. The oxygen is usually used in the cell's metabolism.
Industry:Mining
An original structural feature of the country rock that has been faithfully preserved after replacement by ore.
Industry:Mining
