AM_Kupletskite_13
Formula: K2 Na.776 Ca.398 Mn6.6 Mg.138 (Ti1.762 Nb.238) Si8 O30 F H4
Name: Kupletskite
Unit cell: 5.4022 23.226 21.1782 90.0 95.246 90.0 , V=2646.13
Space group: C12/C1 (15)

Piilonen P C , McDonald A M , LaLonde A E , European Journal of Mineralogy , 13 (2001) p.973-984, Kupletskite polytypes from the Lovozero massif, Kola Peninsula,, Russia: Kupletskite-1A and kupletskite-Ma2b2c, Sample: Kupletskite-Ma2b2c, Locality: Lovozero massif, Kola Peninsula, Russia