Corundum_4 Formula: Al2 O3 Name: Corundum Unit cell: 4.7589 4.7589 12.991 90.0 90.0 120.0 , V=254.79 Space group: R-3C (167)
Newnham R E , de Haan Y M , Zeitschrift fur Kristallographie , 117 (1962) p.235-237, Refinement of the alpha Al2O3, Ti2O3, V2O3 and Cr2O3 structures, Locality: synthetic