AM_Annite_6 Formula: Si2.32 Al3.156 Fe1.624 K.928 O12 Name: Annite Unit cell: 5.3607 9.2874 10.2664 90.0 100.3 90.0 , V=502.90 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: sd75no.10