AM_Muscovite-2M1_8 Formula: (K.92 Na.08) Si3.16 Al2.68 Ti.04 Fe.12 Mg.14 H.26 O11.96 F.04 Name: Muscovite-2M1 Unit cell: 5.186 9.003 20.03 90.0 95.84 90.0 , V=930.34 Space group: C12/C1 (15)

Brigatti M F , Frigieri P , Poppi L , American Mineralogist , 83 (1998) p.775-785, Crystal chemistry of Mg-, Fe-bearing muscovites-2M1, Sample C6Cb from peraluminous granites at Northern Victoria Land, Antarctica