(n.) The mineral or earthy substance associated with metallic ore.
Example Sentences:
(1) One of the gangue minerals is the amphibole grunerite, whose asbestiform variety is called amosite.
Veinstone
Definition:
(n.) The nonmetalliferous mineral or rock material which accompanies the ores in a vein, as quartz, calcite, barite, fluor spar, etc.; -- called also veinstuff.