Citation: Brigatti, M.F.; Poppi, L. (1993). Crystal chemistry of a Ba-rich trioctahedral micas-1M. European Journal of Mineralogy (1,1989-), 5, pp. 856-871.
Formula: Al2.5 Ba0.05 Fe2 H2.15 K1.8 Mg3.26 Na0.15 O24 Si5.5 Ti0.74
Chemical name: (K1.8 Na0.15 Ba0.05) (Mg3.26 Fe2 Ti0.74) (Al2.5 Si5.5 O20) O1.85 (O H)2.15
List type: noninterleaving
List: 2D
Basis: (1;0;0 0;1;0)
Dimensionality: 2
Formula: Al8 Fe6 Mg6 O24 Si8 Ti6 (Al4 Fe3 Mg3 O12 Si4 Ti3)
Multiplicity: 1