…the term is a general term for minerals such as nepheline, leucite, cancrinite, sodalite, haüyne, and melilite, which are chemically similar to feldspar and are aluminosilicates containing potassium, sodium, and calcium, but are much poorer in silica than feldspar. Feldspars therefore substitute for feldspars in rocks that are relatively poor in silica. *Some of the terminology explanations that mention "Cancrinite" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…化学組成は長石に似てK,Na,Caなどのアルミノケイ酸塩であるが,それよりずっとシリカに乏しいネフェリン,リューサイト,カンクリナイトcancrinite,ソーダライト,アウインhaüyne,メリライトなどの鉱物の総称である。したがって準長石は比較的シリカに乏しい岩石において岩石学的に長石のかわりをしている。… ※「カンクリナイト」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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