20 Terms
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General mining
General mining related terms and definitions in minerals and related activities.
Industry: Mining
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General mining
Melanchyme
Mining; General mining
A bituminous substance found in masses in the brown coal of Zweifelsruth, Bohemia, former Czechoslovakia. That part of this substance that is soluble in alcohol is termed rochlederite, the residue ...
Specularite
Mining; General mining
A black or grey variety of hematite with splendant metallic luster, often showing iridescence; occurs in micaceous or foliated masses or in tabular or disklike crystals.
Summer black oil
Mining; General mining
A black lubricating oil of 540 degrees F (282 degrees C) fire test, used as a heavy tempering oil and for waterproofing cement.
Nero-antico
Mining; General mining
A black marble found in Roman ruins, probably from the Taenarian peninsula, Greece.
Annerodite
Mining; General mining
A black mixture of samarskite with parallel overgrowths of columbite. Also spelled aanerodite.
Black amber
Mining; General mining
A black variety of retinite having a very high oxygen content (23%).
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