AM_Lazurite Formula: Na3.12 Ca.8 Mg.36 Al2.97 Si3.03 O15.12 S Name: Lazurite Unit cell: 9.105 9.105 9.105 90.0 90.0 90.0 , V=754.81 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: Sary-Sang, Afghanistan