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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Magnesiocummingtonite ： ウィキペディア英語版 Magnesiocummingtonite Magnesiocummingtonite is the magnesium rich endmember of the cummingtonite-grunerite series of the amphibole group of minerals, with the following composition: (Mg)7Si8O22(OH)2. Magnesiocummingtonite is considered to be an aptly named magnesium rich variety of the mineral cummingtonite which has Fe2+ substituting for some of the Mg. Divalent manganese may also substitute for magnesium in the crystal structure. It may be difficult to distinguish cummingtonite from the Mg rich variety in hand specimens. However, the refractive index, specific gravity and degree of attraction to a magnetic field increases with more Fe content. ==References== *(Mineralienatlas - Magnesiocummingtonite ) *(Mindat - Magnesiocummingtonite ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Magnesiocummingtonite」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.