AM_SrO_2(Al2O3) Formula: Sr Al4 O7 Name: SrO*2(Al2O3) Unit cell: 13.04 9.01 5.55 90.0 106.502 90.0 , V=625.21 Space group: C12/C1 (15)

Boyko E R , Wisnyi L G , Acta Crystallographica , 11 (1958) p.444-445, The optical properties and structures of CaO*2Al2O3 and SrO*2Al2O3, Locality: synthetic