AM_Phlogopite_75 Formula: O11.96 F.04 Si2.84 Al1.12 Fe.7 Mg2.25 Ti.09 (Na.02 K.98) H1.84 Name: Phlogopite Unit cell: 5.329 9.244 10.271 90.0 99.97 90.0 , V=498.32 Space group: C12/M1 (12)

Brigatti M F , Medici L , Poppi L , Vaccaro C , The Canadian Mineralogist , 39 (2001) p.1333-1345, Crystal chemistry of trioctahedral micas - 1M from the Alto Paranaiba, Igneous Province, Southeastern Brazil, Sample: Taa11-1A, ferroan, T-O3 given as 1.663, but I compute 1.647, Locality: Alto Paranaiba Igneous Province, Southeastern Brazil