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Definition of Cordierite
1. Noun. A blue mineral of magnesium and iron and aluminum and silicon and oxygen; often used as a gemstone. 
Definition of Cordierite
1. n. See Iolite.
Definition of Cordierite
1. [n -S]
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1. Noun. A blue mineral of magnesium and iron and aluminum and silicon and oxygen; often used as a gemstone. 
1. n. See Iolite.
1. [n -S]