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cordierite

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cordierite

Main Entry:: cor·di·er·ite
Pronunciation:: \ˈkȯr-dē-ə-ˌrīt\
Function:: noun
Etymology:: French, from Pierre L. A. Cordier †1861 French geologist
Date:: circa 1814

: a blue mineral of vitreous luster and strong dichroism that consists of a silicate of aluminum, iron, and magnesium

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