Citation: Toraya, H.; Iwai, S.I.; Marumo, F.; Nishikawa, T.; Hirao, M. (1978). The crystal structure of synthetic mica, K Mg2.75 Si3.5 Al0.5 O10 F2. Mineralogical Journal (Japan), 9, pp. 210-220.
Formula: Al0.5 F2 K Mg2.75 O10 Si3.5
Chemical name: K Mg2.75 Si3.5 Al0.5 O10 F2
List type: noninterleaving
List: 2D
Basis: (1;0;0 0;1;0)
Dimensionality: 2
Formula: Al8 F4 Mg6 O20 Si8 (Al4 F2 Mg3 O10 Si4)
Multiplicity: 1