Biotite Structure Data

Biotite Structure Data
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Biotite

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Biotite_25
Formula: Si2.68 Al1.96 Fe1.36 Mg.72 Ti.16 (Na.02 K.98) O12 H.16
Name: Biotite
Unit cell: 5.328 9.222 10.197 90.0 100.26 90.0 , V=493.02
Space group: C12/M1 (12)

Brigatti M F , Frigieri P , Ghezzo c , Poppi L , American Mineralogist , 85 (2000) p.436-448, Crystal chemistry of Al-rich biotites coexisting with muscovites in, peraluminous granites, Sample: CC1

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