Citation: Piilonen, P. C.; McDonald, A. M.; Lalonde, A. E. (2003). Insights into astrophyllite-group minerals II: Crystal chemistry Note: sample LAB3, peralkaline nepheline gneiss. The Canadian Mineralogist, 41, pp. 27-54.
Formula: Ca0.121 F0.5 Fe5.988 H4 K1.898 Mg0.064 Na0.627 O30 Si8 Ti1.15 Zr0.85
List type: noninterleaving
List: 3D
Basis: (1;0;0 0;1;0 0;0;1)
Dimensionality: 3
Formula: F Fe7 Mg Na2 O30 Si8 Ti2 Zr2 (F Fe7 Mg Na2 O30 Si8 Ti2 Zr2)
Multiplicity: 1