Citation: Johnsen, O.; Leonardsen, E. S.; Falth, L.; Annehed, H. (1983). Crystal structure of kvanefjeldite: The introduction of [Si3O7OH] layers with eight-membered rings. Neues Jahrbuch fur Mineralogie, Monatshefte, 1983, pp. 505-512.
Formula: Ca0.5 H2 Mn0.5 Na4 O16 Si6
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: Ca4 H8 Mn4 O64 Si24 (Ca H2 Mn O16 Si6)
Multiplicity: 1