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cordierite in British English
(ˈkɔːdɪəˌraɪt)
noun
a grey or violet-blue dichroic mineral that consists of magnesium aluminium iron silicate in orthorhombic crystalline form and is found in metamorphic rocks. Formula: (Mg,Fe)2AL4Si5O18.nH2O
Also called: dichroite, ioliteWord origin
C19: named after Pierre L. A. Cordier (1777–1861), French geologist who described itcordierite in American English
(ˈkɔrdiərˌaɪt)
noun
a bluish, very hard, pleochroic, crystalline mineral, magnesium aluminum silicate, (Mg,Fe)2 Al4Si5O18, used sometimes as a gem
Word origin
after P. L. A. Cordier (1777-1861), Fr geologist + -ite1Image ofcordierite
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