Citation: Piilonen, P. C.; McDonald, A. M.; Lalonde, A. E. (2003). Insights into astrophyllite-group minerals II: Crystal chemistry Sample: RUS12, nepheline syenite pegmatite. The Canadian Mineralogist, 41, pp. 27-54.
Formula: Ca0.178 F0.5 H4 K1.77 Mg0.439 Mn5.627 Na0.934 Nb0.104 O30 Si8 Ti1.896
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: F Mg3 Mn7 Na2 Nb2 O30 Si8 Ti2 (F Mg3 Mn7 Na2 Nb2 O30 Si8 Ti2)
Multiplicity: 1