AM_Kupletskite_2 Formula: Mn5.627 Na.934 Mg.439 (Ti1.896 Nb.104) Si8 K1.77 Ca.178 O30 F.5 H4 Name: Kupletskite Unit cell: 5.3925 11.9283 11.7256 113.044 94.84 103.064 , V=663.39 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: RUS12, nepheline syenite pegmatite, Locality: Lovozero massif, Kola Peninsula, Russia