AM_Annite_2 Formula: Si2.84 Al2.13 Fe1.94 K.9 O12 Name: Annite Unit cell: 5.3944 9.3454 10.3284 90.0 100.22 90.0 , V=512.42 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: sd12no.10