Citation: Guven, N. (1971). The crystal structures of 2M1 phengite and 2M1 muscovite Note: sample 2M1 phengite. Zeitschrift fur Kristallographie, 134, pp. 196-212.
Formula: Al2.038 Ba0.01 Ca0.02 Fe0.14 H2 K0.87 Mg0.5 Na0.07 O12 Si3.392 Ti0.01
List type: interleaving
List: 2D
Basis: (1;0;0 0;1;0)
Dimensionality: 2
Formula: Al12 Fe4 Mg4 O24 Si8 Ti4 (Al3 Fe Mg O6 Si2 Ti)
Multiplicity: 1