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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
Compound blowpipe
Mining; General mining
A blowpipe in which hydrogen is burned in oxygen. Streams of the two gases in the proportion to form water are forced under pressure from separate reservoirs, and issue together from a jet, igniting ...
Sapphirine
Mining; General mining
A blue feldspathoid, crystallising in the cubic system, consisting essentially of silicate of aluminium and sodium with sodium sulfate, (Na,Ca) 4-8 Al 6 Si 6 (O,S) 24 (SO 4 ,Cl) 1-2 . Also spelled ...
Hauynite
Mining; General mining
A blue feldspathoid, crystallising in the cubic system, consisting essentially of silicate of aluminium and sodium with sodium sulfate, (Na,Ca) 4-8 Al 6 Si 6 (O,S) 24 (SO 4 ,Cl) 1-2 . Also spelled ...
Hauyne
Mining; General mining
A blue feldspathoid, crystallising in the cubic system, consisting essentially of silicate of aluminium and sodium with sodium sulfate, (Na,Ca) 4-8 Al 6 Si 6 (O,S) 24 (SO 4 ,Cl) 1-2 . Also spelled ...
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