iolite

Japanese: iolite
iolite

…Cordierite decomposes and melts at 1210-1470°C under normal pressure, and changes to other solid phases under high pressure. Violet transparent crystals are used as gemstones and are called iolite. [Kenichiro Aoki]. …

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…キン青石は常圧では1210~1470℃で分解融解し,また高圧下では他の固相に変化する。すみれ色透明の結晶は宝石に用いられ,アイオライトioliteと呼ばれている。【青木 謙一郎】。…

※「iolite」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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