AM_Lamprophyllite Formula: Ti3 Si4 Na3 Sr2 O18 Name: Lamprophyllite Unit cell: 19.215 7.061 5.3719 90.0 96.797 90.0 , V=723.72 Space group: C12/M1 (12)

Krivovichev S V , Armbruster T , Yakovenchuk V N , Pakhomovsky Y A , Men shikov Y P , European Journal of Mineralogy , 15 (2003) p.711-718, Crystal structures of lamprophyllite-2M and lamprophyllite-2O, from the Lovozero alkaline massif, Kola peninsula, Russia, Note: displacement factors have been altered by Krivovichev, November 2003, Locality: Lovozero alkaline massif, Kola peninsula, Russia