AM_Muscovite_18 Formula: K.9 Na.07 Ba.01 Al2.8 Ti.04 Fe.08 Mg.04 Si3.04 O12 H2 Name: Muscovite Unit cell: 5.194 9.013 20.064 90.0 95.8 90.0 , V=934.46 Space group: C12/C1 (15)

Comodi P , Zanazzi P F , Physics and Chemistry of Minerals , 22 (1995) p.170-177, High-pressure structural study of muscovite, Sample: K-Ms, P = 0.05 GPa