Bor″nite (�), n. [Named after Von Born, a mineralogist.] (Min.) A valuable ore of copper, containing copper, iron, and sulphur; — also called purple copper ore (or erubescite), in allusion to the colors shown upon the slightly tarnished surface.
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Webster's Dictionary 1913
Webster's Revised Unabridged Dictionary, C. & G. Merriam Co., 1913.