Citation: Hazen, R. M.; Finger, L. W.; Velde, D. (1981). Crystal structure of a silica- and alkali-rich trioctahedral mica. American Mineralogist, 66, pp. 586-591.
Formula: F2 Fe0.688 K Li0.225 Mg2.664 Na0.111 O10 Si3.312
List type: noninterleaving
List: 2D
Basis: (1;0;0 0;1;0)
Dimensionality: 2
Formula: F4 Fe8 Li6 Mg6 Na6 O20 Si8 (F2 Fe4 Li3 Mg3 Na3 O10 Si4)
Multiplicity: 1