Citation: Ferraris, G.; Gula, A.; Ivaldi, G.; Nespolo, M.; Sokolova, E.; Uvarova, Y.; Khomyakov, A. P. (2001). First structure determination of an MDO-2O mica polytype associated with a 1M polytype. European Journal of Mineralogy, 13, pp. 1013-1023.
Formula: Al0.6 F1.2 Fe0.34 H0.8 K0.97 Li0.52 Mg2.14 Na0.03 O10.8 Si3.4
List type: noninterleaving
List: 2D
Basis: (1;0;0 0;1;0)
Dimensionality: 2
Formula: Al8 F4 Fe6 H4 Li6 Mg6 O24 Si8 (Al4 F2 Fe3 H2 Li3 Mg3 O12 Si4)
Multiplicity: 1