HEAVY SPAR - Definition

Pronunciation:		'hevee spâr
WordNet Dictionary

	Definition:	[n] a white or colorless mineral (BaSO4); the main source of barium

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	Synonyms:	barite, barium sulphate, barytes

	See Also:	atomic number 56, Ba, barium, mineral

Webster's 1913 Dictionary

	Definition:	\Heav"y spar`\ (Min.) Native barium sulphate or barite, -- so called because of its high specific gravity as compared with other non-metallic minerals.