AM_Kupletskite_7 Formula: Mn6.099 Na.98 Mg.085 (Ti1.248 Nb.752) Si8 K1.72 Ca.06 O30 F.5 H4 Name: Kupletskite Unit cell: 5.4033 11.92 11.741 112.933 94.793 103.108 , V=665.71 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: MSH15, Locality: nepheline syenite pegmatite at Mont Saint-Hilaire, Quebec, Canada