'Glaucophane' definitions:

Definition of 'Glaucophane'

From: GCIDE

Glaucophane \Glau"co*phane\, n. [Gr. glayko`s silvery, gray + fai`nesqai to appear.] (Min.) A mineral of a dark bluish color, related to amphibole. It is characteristic of certain crystalline rocks. [1913 Webster]