Formula: K.9 Na.06 Mg1.35 Fe1.2 Ti.27 Al.94 Si2.84 O12
Name: Phlogopite
Unit cell: 5.3304 9.2277 10.1918 90.0 100.051 90.0 , V=493.61
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: MS9, Note: 1M polytype