IPA: //ɡæŋ//
KK: /gæŋ/
The useless rock or material that is found with valuable minerals, which does not have any economic value itself.
The miners had to separate the gangue from the precious ore to extract the gold.
Gangue originates from the German word 'Gang', meaning a passage or a way, combined with the suffix '-ue', which is used in various contexts. The term refers to the worthless material that surrounds valuable minerals in ore, essentially the 'way' or 'path' that does not contain the desired substance.
Think of 'gang' as a 'passage' or 'way' that leads to something less valuable, helping you remember that 'gangue' refers to the worthless material found with valuable minerals.