Citation: Semenova, T.F.; Rozhdestvenskaya, I.V.; Frank-Kamenetskii, V.A. (1977). Refinement of the crystal structure of tetraferriphlogopite. Kristallografiya, 22, pp. 1196-1201.
Formula: Al0.12 Fe H2 K0.92 Mg2.88 Na0.08 O12 Si3
Chemical name:(K.92 Na.08) (Mg2.88 Fe.12) (Si3.0 Fe.88 Al.12) O10 (O H)2