AM_Phlogopite_20 Formula: (Al1.08 Si2.92) Mg3 K O12 H2 Name: Phlogopite Unit cell: 5.3158 9.2036 10.31 90.0 99.891 90.0 , V=496.91 Space group: C12/M1 (12)

Redhammer G J , Roth G , American Mineralogist , 87 (2002) p.1464-1476, Single-crystal structure refinements and crystal chemistry of, synthetic trioctahedral micas KM3(Al,Si)4O10(OH)2, where, M = Ni, Mg, Co, Fe, Al, Sample: Phl#2 - Mg