AM_Muscovite-2M1_2
Formula: (K.92 Na.08) Si2.92 Al2.96 Ti.02 Fe.08 Mg.06 O11.98 F.02
Name: Muscovite-2M1
Unit cell: 5.186 8.991 20.029 90.0 95.77 90.0 , V=929.17
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 A4b from peraluminous granites at Sardinia, Italy