AM_Phlogopite-2O Formula: (K.97 Na.03) (Mg2 Fe.33 Li.67) (Si3.4 Al.6) O11.2 F.8 H1.2 Name: Phlogopite-2O Unit cell: 5.2781 9.141 20.124 90.0 90.0 90.0 , V=970.92 Space group: CCMM (63)

Ferraris G , Gula A , Ivaldi G , Nespolo M , Sokolova E , Uvarova Y , Khomyakov A P , European Journal of Mineralogy , 13 (2001) p.1013-1023, First structure determination of an MDO-2O mica polytype associated with a 1M polytype