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Cafarsite
Cafarsite (Ca8(Ti,Fe2+,Fe3+,Mn)6-7(AsO3)12·4H2O) is a rare calcium iron arsenite mineral. Manganese and titanium occur with iron in the formula. It was first described in 1966 for an occurrence in the Binn Valley, Valais, Switzerland. Its name is from the composition, ''ca''lcium, ''f''errum (iron), and ''ars''enic.〔〔〔 It has also been reported from Piedmont, Italy and the Hemlo gold mine in the Thunder Bay District, Ontario, Canada.〔〔 ==References==
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「Cafarsite」の詳細全文を読む
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