AM_Illite_7 Formula: K Al4 Si2 O12 Name: Illite Unit cell: 5.2226 9.0183 20.143 90.0 95.665 90.0 , V=944.08 Space group: C12/C1 (15)

Gualtieri A F , Journal of Applied Crystallography , 33 (2000) p.267-278, Accuracy of XRPD QPA using the combined Rietveld-RIR method, Locality: Napoli, Italy