AM_Corundum_2 Formula: Al2 O3 Name: Corundum Unit cell: 4.754 4.754 12.99 90.0 90.0 120.0 , V=254.25 Space group: R-3C (167)

Ishizawa N , Miyata T , Minato I , Marumo F , Iwai S , Acta Crystallographica, Section B , 36 (1980) p.228-230, A structural investigation of alpha-Al2O3 at 2170 K, T = 300 K