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单词 cordierite
释义 cor·di·er·ite
\ˈkȯ(r)dēəˌrīt\ noun
(-s)
Etymology: French, from Pierre L. A. Cordier died 1861 French geologist, who first described it + French -ite
: an orthorhombic mineral of various shades of blue with vitreous luster and strong dichroism consisting of a silicate of aluminum, iron, and magnesium (Mg,Fe)2Al4Si5O18 easily altered by exposure (hardness 7-7.5, specific gravity 2.60-2.66)
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