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

nominal price

Mining; General mining

An estimate of the price for a future month date which is used to designate a closing price when no trading has taken place in that date. Also used for current price indications in similar ...

Fremont etching reagent

Mining; General mining

An etchant consisting of 10 g of iodine and 20 g of potassium iodide in 100 mL of water.

Carapella's reagent

Mining; General mining

An etchant consisting of 5 g of ferric chloride dissolved in 96 mL of ethyl alcohol to which has been added 2 mL of hydrochloric acid; used in etching nonferrous metals and manganese steels.

Czochralski's reagent

Mining; General mining

An etchant for iron or steel, consisting of a solution of 10% to 20% ammonium persulfate in water.

Marble's reagent

Mining; General mining

An etchant for stainless steels, consisting of 4 g of copper sulfate in 20 mL of hydrochloric acid and 20 mL of water.

An etchant for steel; it consists of seven parts of a solution containing 20% methyl alcohol, 20% ethyl alcohol, 20% iso-amyl alcohol, and 10% butyl alcohol added to three parts of a solution of 4% ...

platy structure

Mining; General mining

An igneous rock structure of tabular sheets suggesting stratification. It is formed by contraction during cooling; the structure is parallel to the surface of cooling and is commonly accentuated by ...