cor·di·er·ite (kôr d - -r t )n. A dichroic violet-blue to gray mineral silicate of magnesium, aluminum, and sometimes iron. Also called dichroite. [French, after Pierre L. Cordier (1777-1861), French geologist.] |
cordierite [ˈkɔːdɪəˌraɪt]
n
(Earth Sciences / Minerals) 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 iolite
[named after Pierre L. A. Cordier (1777-1861), French geologist who described it]
| cordierite (kôrd--rt) A light-blue to dark-blue or gray orthorhombic mineral. Cordierite is a silicate of magnesium, aluminum, and sometimes iron, and is found in granites and in metamorphic rocks that form under relatively low-pressure conditions. Chemical formula: (Mg,Fe)2Al4Si5O18. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. | cordierite - a blue mineral of magnesium and iron and aluminum and silicon and oxygen; often used as a gemstone mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition water sapphire - a deep blue cordierite often used as a gemstone |
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