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iolite |
1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Iolite \I"o*lite\, n. [Gr. ? a violet + -lite.] (Min.) A silicate of alumina, iron, and magnesia, having a bright blue color and vitreous luster; cordierite. It is remarkable for its dichroism, and is also called dichroite.