Mineral mining

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

crystallogram

Mining; General mining

A record, photographic or electronic, of crystal structure obtained by means of X-ray diffraction. Compare: Laue diagram; Laue photograph; powder pattern.

Ringrose methane recorder

Mining; General mining

A recorder that gives a continuous record in the range of 0% to 3%.

choke crushing

Mining; General mining

A recrushing of fine ore due to the fact that the broken material cannot exit a machine before it is again crushed. Compare: free crushing

topotaxy

Mining; General mining

A recrystallization in which the crystallographic orientation of the parent crystal determines that of the product crystal, e.g., goethite to hematite with a -> c/3, b -> 2 a, and c#M# -> a T3/3. ...

ophicalcite

Mining; General mining

A recrystallized metamorphic rock composed of calcite and serpentine, commonly formed by dedolomitization of a siliceous dolostone. Some ophicalcites are highly veined and brecciated and are ...