heavy spar | (n) a white or colorless mineral (BaSO4); the main source of barium, Syn. barytes, barium sulphate, barite |
Heavy spar | (Min.) Native barium sulphate or barite, -- so called because of its high specific gravity as compared with other non-metallic minerals. [ 1913 Webster ] |
Schwerspat { m } [ min. ] | Schwerspate { pl } | heavy spar | heavy spars [Add to Longdo] |