AM_Muscovite_10 Formula: Al2.88 Fe.02 Mn.02 Si3.08 (K.89 Na.1 Rb.01) H4 O12 Name: Muscovite Unit cell: 5.1628 8.962 19.977 90.0 95.738 90.0 , V=919.68 Space group: C12/C1 (15)

Liang J , Hawthorne F C , Swainson I P , The Canadian Mineralogist , 36 (1998) p.1017-1027, Triclinic muscovite: X-ray diffraction, neutron diffraction and, photo-acoustic FTIR spectroscopy, Sample: T = 12 K