Cation Distribution in Anthophyllite from Mössbauer and Infra-red Spectroscopy


THE orthorhombic anthophyllite minerals and the monoclinic cummingtonites and grunerites are members of two isomorphous amphibole series of composition (Mg,Fe2+)7Si8O22(OH)2. (All anthophyllites considered here have less than one aluminium (III) ion per formula unit3.) Anthophyllites have been described1,2 with 0–3.28 iron (II)* ions per formula unit, while… (More)
DOI: 10.1038/212913a0


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