En"sta*tite (?), n. [Named fr. Gr. an adversary, because infusible before the blowpipe.] Min.

A mineral of the pyroxene group, orthorhombic in crystallization; often fibrous and massive; color grayish white or greenish. It is a silicate of magnesia with some iron. Bronzite is a ferriferous variety.


© Webster 1913.

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