AM_Lazurite_1 Formula: Na3.48 Ca.6 Al2.91 Si3.09 O11.52 S Name: Lazurite Unit cell: 9.054 9.054 9.054 90.0 90.0 90.0 , V=742.20 Space group: P-43N (218)

Hassan I , Peterson R C , Grundy H D , Acta Crystallographica, Section C , 41 (1985) p.827-832, The structure of lazurite, ideally Na6Ca2(Al6Si6O24)S2, a member of the, sodalite group, Locality: Baffin Island