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hypersthene |
1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Hypersthene \Hy"per*sthene\, n. [Gr. "ype`r over + ? strength: cf F. hyperst[`e]ne.] (Min.) An orthorhombic mineral of the pyroxene group of a grayish or greenish black color, often with a peculiar bronzelike luster (schiller) on the cleavage surface.
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