10 Terms
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Mineral mining
The extraction of valuable minerals or other geological materials from the earth for economic interests.
Industry: Mining
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Mineral mining
Attrital coal
Mining; General mining
A bright coal (composed of anthraxylon and of attritus in which the translucent cell-wall degradation matter or translucent humic matter predominates) in which the ratio of anthraxylon to attritus is ...
Amazonstone
Mining; General mining
A bright, apple- or blue-green variety of microcline; may be carved for art objects.
Amazonite
Mining; General mining
A bright, apple- or blue-green variety of microcline; may be carved for art objects.
Samarium
Mining; General mining
A bright, silvery, lustrous, metallic element of the rare-earth group. Symbol, Sm. It is found along with other members of the rare-earth elements in many minerals, including 2747 monazite and ...
Mellow amber
Mining; General mining
A brittle wine-yellow variety of amber with very little succinic acid; lacks the toughness and ability to take as high a polish as the succinic acid-rich varieties; rarely used as a gem except for ...
Gedanite
Mining; General mining
A brittle wine-yellow variety of amber with very little succinic acid; lacks the toughness and ability to take as high a polish as the succinic acid-rich varieties; rarely used as a gem except for ...
Nose
Mining; General mining
A British term used esp. in Scotland for a promontory, headland, or cape, or any point or projection of the land into the sea; commonly used as a suffix to a place name, e.g., Fifeness.
