Liberal Dictionary English Dictionary
noun
- rock or mineral matter of no value occurring with the metallic ore in a vein or deposit.
noun
- valueless and undesirable material, such as quartz in small quantities, in an ore
Gangue – Wikipedia
What Is Gangue? Geology Lesson (Episode #2) – YouTube
File:Argent natif sur gangue (Allemagne).jpg – Wikimedia Commons
File:Argent natif sur gangue (Allemagne) 2.jpg – Wikimedia Commons