Formula: (K.93 Na.07) (Mg1.5 Fe1.11 Ti.39) (Al1.16 Si2.84) O12
Name: Phlogopite
Unit cell: 5.3399 9.2483 10.1688 90.0 100.217 90.0 , V=494.22
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: MS13, Note: 1M polytype