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

unakite

Mining; General mining

An epidote-rich granite, which also contains pink orthoclase, quartz, also minor opaque oxides, apatite, and zircon. The name is derived from the type locality, the Unaka Range, Great Smoky ...

An epoch of the early Tertiary Period, after the Eocene and before the Miocene; also, the corresponding worldwide series of rocks. It is considered to be a period when the Tertiary is designated as ...

Miocene

Mining; General mining

An epoch of the later Tertiary period, after the Oligocene and before the Pliocene; also, the corresponding worldwide series of rocks. It is considered to be a period when the Tertiary is designated ...

Holocene

Mining; General mining

An epoch of the Quaternary period, from the end of the Pleistocene, approx. 10,000 years ago, to the present time; also, the corresponding series of rocks and deposits. When the Quaternary is ...

Recent

Mining; General mining

An epoch of the Quaternary period, from the end of the Pleistocene, approx. 10,000 years ago, to the present time; also, the corresponding series of rocks and deposits. When the Quaternary is ...

Gaudin's equation

Mining; General mining

An equation for the particle size distribution that can be expected when a material is crushed in a ball mill or rod mill; it is of the form P = 100(x/D)m, where P is the percentage passing a ...

Rosin-Rammler equation

Mining; General mining

An equation relating to fine grinding: for most powders that have been prepared by grinding, the relationship between R, the residue remaining on any particular sieve, and the grain size in ...