Bible Dictionaries
Heavy Spar

Webster's Dictionary

Native barium sulphate or barite, - so called because of its high specific gravity as compared with other non-metallic minerals.

Bibliography Information
Webster, Noah. Entry for 'Heavy Spar'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​h/heavy-spar.html. 1828.