AM_Diaoyudaoite_2 Formula: Na.774 Cd.222 Al11 O17.111 Name: Diaoyudaoite Unit cell: 5.5906 5.5906 22.519 90.0 90.0 120.0 , V=609.53 Space group: P63/MMC (194)

Edstrom K , Thomas J O , Farrington G C , Acta Crystallographica, Section B , 47 (1991) p.635-643, Structural aspects of the Na+ -> Cd2+ ion-exchange process in Na+ beta-alumina, Locality: synthetic, Note: anisoB s from ICSD, Sample: y = .45