Citation: Piilonen, P. C.; McDonald, A. M.; Lalonde, A. E. (2003). Insights into astrophyllite-group minerals II: Crystal chemistry Sample: RUS4, nepheline syenite pegmatite. The Canadian Mineralogist, 41, pp. 27-54.
Formula: Ca0.22 F0.5 Fe4.028 H8 K1.84 Mg0.388 Mn1.82 Na0.62 Nb0.07 O30 Si8 Ti1.93
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: F Fe5 H4 Mg3 Mn2 Na2 Nb2 O30 Si8 Ti2 (F Fe5 H4 Mg3 Mn2 Na2 Nb2 O30 Si8 Ti2)
Multiplicity: 1