veinstone
/ˈveɪnˌstoʊn/
noun
- Rock or mineral material that surrounds or is mixed with a vein of valuable ore.
- Geologists studied the veinstone to understand how the mineral deposit formed.
- The veinstone was crushed and discarded after the ore was extracted.
- Miners had to remove tons of veinstone to reach the gold vein.
Synonyms