From The Collaborative International Dictionary of English v.0.44 [gcide]:
Barite \Ba"rite\, noun (Min.) Native sulphate of barium, a mineral occurring in transparent, colorless, white to yellow crystals (generally tabular), also in granular form, and in compact massive forms resembling marble. It has a high specific gravity, and hence is often called {heavy spar}. It is a common mineral in metallic veins.
From The Collaborative International Dictionary of English v.0.44 [gcide]:
Barytes \Ba*ry"tes\, noun [Gr. bary's heavy: cf. Gr. bary'ths heaviness, F. baryte.] (Min.) Barium sulphate, generally called {heavy spar} or {barite}. See {Barite}.
From WordNet (r) 2.0 [wn]:
noun
1: a white or colorless mineral (BaSO4); the main source of barium [syn: {heavy spar}, {barytes}, {barium sulphate}]
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