Fassaite

Japanese: fassaite
Fassaite

…Some augites and diopsides contain a lot of aluminum and are poor in sodium. These are sometimes called fassaite. Pigeonite often occurs in the groundmass of volcanic rocks, but is rare as a phenocryst. …

*Some of the terminology explanations that mention "fassaite" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…オージャイトや透輝石の中にはAlを多く含み,Naに乏しいものがある。それらを特にファッサイトfassaiteと呼ぶことがある。ピジョン輝石pigeoniteは火山岩の石基にはしばしば出現するが,斑晶としてはまれである。…

※「fassaite」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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