Citation: Redhammer, G.J.; Roth, G. (2002). Single-crystal structure refinements and crystal chemistry of synthetic trioctahedral micas K M3 (Al(3+), Si(3+))4 O10 (O H)2, where M = Ni(2+), Mg(2+), Co(2+), Fe(2+) or Al(3+). American Mineralogist, 87, pp. 1464-1476.
Formula: Al0.98 Fe3.19 H2 K O12 Si2.83
Chemical name:K Fe3 ((Al0.98 Si2.83 Fe0.19) O10) (O H)2