Citation: Armbruster, T. (1989). Crystal chemistry of double-ring silicates: structure of roedderite at 100 and 300 K T= 100 K. European Journal of Mineralogy, 1, pp. 715-718.
Formula: Fe0.12 K0.94 Mg4.75 Mn0.1 Na1.02 O30 Si12 Ti0.01
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Fe10 Mg10 Mn10 O60 Si24 Ti10 (Fe5 Mg5 Mn5 O30 Si12 Ti5)
Multiplicity: 1