cordierite

(kôr′dē ər īt′)

noun

a bluish, very hard, pleochroic, crystalline mineral, magnesium aluminum silicate, (Mg,Fe) AlSiO, used sometimes as a gem

Origin: after P. L. A. Cordier (1777-1861), Fr geologist + -ite

See cordierite in American Heritage Dictionary 4

noun

A dichroic violet-blue to gray mineral silicate of magnesium, aluminum, and sometimes iron. Also called dichroite.

Origin:

Origin: French

Origin: , after Pierre L. Cordier (1777-1861), French geologist

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