AM_Annite_5 Formula: Si2.432 Al2.152 Fe2.428 K.94 O12 Name: Annite Unit cell: 5.3635 9.2929 10.2837 90.0 100.28 90.0 , V=504.34 Space group: C12/M1 (12)

Redhammer G J , Beran A , Schneider J , Amthauer G , Lottermoser W , American Mineralogist , 85 (2000) p.449-465, Spectroscopic and structural properties of synthetic micas on the, annite-siderophyllite binary: Synthesis, crystal structure refinement,, Mossbauer, and infrared spectroscopy, Sample: sd62no.10