Cummingtonite Structure Data

Cummingtonite Structure Data
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Cummingtonite

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Cummingtonite
Formula: Si8 (Mg4.68 Fe2.32) O24
Name: Cummingtonite
Unit cell: 9.51 18.19 5.33 90.0 101.9 90.0 , V=902.21
Space group: C12/M1 (12)

Fischer K F , American Mineralogist , 51 (1966) p.814-818, A further refinement of the crystal structure of cummingtonite, (Mg,Fe)7(Si4O11)2(OH)2

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