
1) French word used in English
Found on
https://www.crosswordclues.com/clue/gangue

In mining, gangue (pronounced `gang`) is the commercially worthless material that surrounds, or is closely mixed with, a wanted mineral in an ore deposit. It is thus distinct from overburden, which is the waste rock or materials overlying an ore or mineral body that are displaced during mining without being processed. The separation of mineral f.....
Found on
http://en.wikipedia.org/wiki/Gangue

worthless rock in which valuable metals occur
Found on
http://phrontistery.info/g.html

• (n.) The mineral or earthy substance associated with metallic ore.
Found on
http://thinkexist.com/dictionary/meaning/gangue/

Undesired minerals associated with ore, mostly nonmetallic.
Found on
http://www.australian-shares.com/glossary-of-terms.php.html

(from the article `copper processing`) In the ore-dressing plant, the material received from the mine is crushed in several stages and finely ground to a size which ensures that copper ... As mined, raw ore is a nonchemical mixture of ore proper (heavy) and earthy matter, or gangue (light); the two may be largely separated by crushing ....
Found on
http://www.britannica.com/eb/a-z/g/7

Sand, rock, and other impurities surrounding the mineral of interest in an ore.
Found on
http://www.chemistry-dictionary.com/definition/gangue.php

The unwanted material around ore minerals
Found on
http://www.encyclo.co.uk/local/20206

Sand, rock, and other impurities surrounding the mineral of interest in an ore.
Found on
http://www.encyclo.co.uk/local/20728
Gangue noun [ French
gangue , from German
gang a metallic vein, a passage. See
Gang ,
noun ]
(Mining) The mineral or earthy substance associated with metallic ore.
Found on
http://www.encyclo.co.uk/webster/G/8

The worthless rock in a vein which holds valuable metals.
Found on
http://www.legendsofamerica.com/

The worthless part of as-mined ore.
Found on
http://www.metalbulletin.com/Glossary.html

A gangue is a mineral substance surrounding a metallic ore in a vein.
Found on
http://www.probertencyclopaedia.com/browse/HG.HTM

The unwanted rock in copper ore.
Found on
https://copperalliance.org.uk/about-copper/copper-glossary/

Non-profitable minerals in an ore deposit, often associated with the host rock.
Found on
https://copperfoxmetals.com/investors/glossary-of-terms/

Non-profitable minerals in an ore deposit, often associated with the host rock.
Found on
https://www.encyclo.co.uk/local/22710

The worthless minerals in an ore deposit.
Found on
https://www.encyclo.co.uk/local/22732

The worthless minerals in an ore deposit.
Found on
https://www.encyclo.co.uk/local/22733

The worthless minerals in an ore deposit.
Found on
https://www.encyclo.co.uk/local/22734

The worthless rock in a vein which holds valuable metals.
Found on
https://www.encyclo.co.uk/local/22736
No exact match found.