Definition of gangue in English:

gangue

Syllabification: gangue
Pronunciation: /ɡaNG
 
/

noun

The commercially valueless material in which ore is found.
More example sentences
  • Specifically, gangue formed by both metasomatic alteration and precipitation during ore formation can yield a wealth of information about the origins and physical conditions of the ore-forming fluids.
  • Here, too, the veins may be monomineralic, commonly quartz or calcite, but more usually are polymineralic with a mixture of metalliferous sulphide or oxide minerals and gangue minerals.
  • The major ore and gangue minerals are given in the table, but only those of interest to collectors are discussed in detail below.

Origin

early 19th century: from French, from German Gang 'course, lode'; related to gang1.

Definition of gangue in:

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Pronunciation: dəˈmôrəˌlīz
verb
cause (someone) to lose confidence or hope; dispirit