AM_Phlogopite_45 Formula: (K.93 Na.07) Mg1.47 Fe1.14 Ti.24 Al1.43 Si2.72 O12 Name: Phlogopite Unit cell: 5.3314 9.229 10.1801 90.0 100.051 90.0 , V=493.21 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: MS5, Note: 1M polytype