AM_Phlogopite_42 Formula: (K.93 Na.07) (Mg1.5 Fe1.11 Ti.39) (Al1.08 Si2.92) O12 Name: Phlogopite Unit cell: 5.333 9.244 10.152 90.0 100.164 90.0 , V=492.62 Space group: C12/M1 (12)

Laurora A , Brigatti M F , Mottana A , Malferrari D , Caprilli E , American Mineralogist , 92 (2007) p.468-480, Crystal chemistry of trioctahedral micas in alkaline and subalkaline volcanic, rocks: A case study from Mt. Sassetto (Tolfa district, Latium, central Italy), Locality: Mt. Sassetto, Tolfa district, Latium, Italy, Sample: MS12, Note: 1M polytype