
thumb|right|Crystals of cassiterite, a commercially valuable [[ore mineral, in a matrix of quartz, the gangue]] thumb|Banded Zn-Pb ore sample with [[sphalerite (brown) and (silver-grey) galena as main ore minerals and (white) calcite as main gangue mineral]]
thumb|right|Crystals of cassiterite, a commercially valuable [[ore mineral, in a matrix of quartz, the gangue]] thumb|Banded Zn-Pb ore sample with [[sphalerite (brown) and (silver-grey) galena as main ore minerals and (white) calcite as main gangue mineral]]
Gangue (), or veinstone, 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 is displaced during mining without being processed.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).