Hypersthene

(definition) by Webster 1913 Wed Dec 22 1999 at 0:15:48

Hy"per*sthene (?), n. [Gr. over + strength: cf. F. hyperstene.] 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.

 

© Webster 1913.

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