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
Rock gypsum
Mining; General mining
A massive, coarsely crystalline to finely granular, sedimentary rock of the mineral gypsum with bedding commonly disturbed by expansion during hydration of parent anhydrite.
Blasting mat
Mining; General mining
A mat of woven steel wire, rope, scrap tires, or other suitable material or construction to cover blastholes for the purpose of preventing flying rock missiles.
Gyprock
Mining; General mining
A massive, coarsely crystalline to finely granular, sedimentary rock of the mineral gypsum with bedding commonly disturbed by expansion during hydration of parent anhydrite.
Alisonite
Mining; General mining
A massive, deep indigo-blue copper-lead sulfide, Cu 2 S.PbS . It contains 53.63% copper and 28.25% lead. Tarnishes quickly.
Air mat
Mining; General mining
A mat made of porous material, usually canvas, and used to subdivide and distribute air in certain pneumatic-type flotation machines.
Dumortierite quartz
Mining; General mining
A massive, blue, violet-blue, or blue-black, opaque variety of quartz coloured by intergrown crystals of dumortierite.
Retinalite
Mining; General mining
A massive, honey-yellow or greenish variety of serpentine with a waxy or resinous luster.
