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mayenite

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mayenite

  1. (鉱物学) An isometric-hextetrahedral colorless mineral containing aluminum, calcium, and oxygen.

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ウィキペディア英語版

出典:Wikipedia

Mayenite

出典:『Wikipedia』 (2011/05/16 20:39 UTC 版)

英語による解説

ウィキペディア英語版からの引用
引用

Mayenite (after Mayen, Germany), Ca12Al14O33, is a rare cubic mineral of cubic symmetry, originally reported from Eifel volcanic complex (Germany). It is also found at pyrometamorphic sites: e.g., in the Hatrurim Formation (Israel) and in some burned coal dumps. The formula can be written as [Ca12Al14O32]O, which refers to the unique feature: anion diffusion process. Mayenite is also found as calcium aluminate in cement where its formula is also written as 12 CaO · 7 Al2O3 , or C12A7 in the cement chemist notation.

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