cordierite

cor·di·er·ite

C0638800 (kôr′dē-ə-rīt′)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 (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 or iolite [C19: named after Pierre L. A. Cordier (1777–1861), French geologist who described it]

cor•di•er•ite

(ˈkɔr di əˌraɪt)

n. a strongly dichroic blue mineral consisting of a silicate of magnesium, aluminum, and iron: common in metamorphic rocks. [1805–15; after Pierre Latin. A. Cordier (1777–1861), French geologist; see -ite¹]

Thesaurus

Noun

cordierite - a blue mineral of magnesium and iron and aluminum and silicon and oxygen; often used as a gemstonemineral - solid homogeneous inorganic substances occurring in nature having a definite chemical compositionwater sapphire - a deep blue cordierite often used as a gemstone

Translations

Cordierite

cordierite

[′kȯrd·ē·ə‚rīt] (mineralogy) Mg₂(Al₄Si₅O₁₈) A blue, orthorhombic magnesium aluminosilicate mineral frequently occurring associated with thermally metamorphosed rocks derived from argillaceous sediments.

Cordierite

[named for French geologist P. Cordier (1777–1861)], also iolite or dichroite, a mineral, a complex aluminosilicate of aluminum, magnesium, and iron; chemical composition, (Mg, Fe)₂Al₃[AlSi₅O₁₈]. Its crystal structure is characterized by a ring construction similar to that of beryllium. Cordierite crystallizes in the orthorhombic system. It occurs in the form of prismatic crystals, irregular clusters, and grains of blue-gray, blue, violet, or brown color; sometimes it is colorless. It has a hardness of 7.0–7.5 on the mineralogical scale and a density of 2,600–2,660 kg/m³. Dichroism is a characteristic feature and is highly pronounced in transparent grains. The mineral effloresces easily to form talc, mica, and other secondary minerals. Cordierite is formed during contact metamorphosis of rocks rich in aluminum and magnesium. Transparent varieties of cordierite are used as gems.

cordierite

cor·di·er·ite

cordierite

cor•di•er•ite

Cordierite

cordierite

Cordierite

cordierite

Words related to cordierite

noun a blue mineral of magnesium and iron and aluminum and silicon and oxygen

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