AM_Astrophyllite_3 Formula: Mn1.8 Na.691 Fe3.971 Mg.421 (Ti1.916 Zr.084) Si8 K1.8 Ca.209 O30 F.5 H4 Name: Astrophyllite Unit cell: 5.3754 11.897 11.6634 113.133 94.638 103.081 , V=656.01 Space group: P-1 (2)

Piilonen P C , McDonald A M , Lalonde A E , The Canadian Mineralogist , 41 (2003) p.27-54, Insights into astrophyllite-group minerals II: Crystal chemistry, Sample: RUS8, nepheline syenite pegmatite, Locality: Khibina massif, Kola Peninsula, Russia