- 行业: 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 pale yellow, soft variety of ozocerite that is squeezed out of the veins under the influence of pressure of the surrounding rocks.
Industry:Mining
A paleogeologic map that shows lithologic variations at some buried horizon or within some restricted zone at a particular time in the geologic past.
Industry:Mining
A pale-red or blue variety of gem corundum in small transparent hexagonal prisms in Sri Lanka.
Industry:Mining
A pale-yellow to dark reddish brown, sulfur-bearing fossil resin found in brown coal. Also spelled ajkite.
Industry:Mining
A pale-yellow to dark-brown variety of retinite (amber) in decayed wood at Cedar Lake, MB, Canada.
Industry:Mining
A pale-yellow to dark-brown variety of retinite (amber) in decayed wood at Cedar Lake, MB, Canada.
Industry:Mining