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heavy spar
h e a v y s p a r hex:#104;#101;#97;#118;#121;#32;#115;#112;#97;#114;
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- Heavy spar - - Native barium sulphate or barite, -- so called because of its high specific gravity as compared with other non-metallic minerals.
- Barytes - n. - Barium sulphate, generally called heavy spar or barite. See Barite.