20 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
cobaltiferous wad
Mining; General mining
An impure hydrated oxide of manganese containing up to 30% cobalt; a source of cobalt in Zaire.
blister copper
Mining; General mining
An impure intermediate product in the refining of copper, produced by blowing copper matte in a converter.
hydraulic limestone
Mining; General mining
An impure limestone that contains silica and alumina (usually as clay) in varying proportions and that yields, upon calcining, a cement that will harden underwater.
antimony regulus
Mining; General mining
An impure product of the smelting process; largely antimony sulfide.
barilla
Mining; General mining
An impure sodium carbonate and sulfate obtained by burning various species of land or marine plants; soda ash.
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