AM_Sitinakite Formula: Na2.11 K.69 (Ti3.8 Nb.2) Si2 O17.69 H26 Name: Sitinakite Unit cell: 7.819 7.819 12.099 90.0 90.0 90.0 , V=739.69 Space group: P42/MCM (132)

Sokolova E V , Rastsvetaeva R K , Andrianov V I , Egorov-Tismenko Y K , Men shikov Y P , Soviet Physics Doklady , 34 (1989) p.583-585, Locality: Khibinskii alkaline massif, Russia, The crystal structure of a new sodium titanosilicate