Corundum Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R060020 Lewis J, Schwarzenbach D, Flack H D Acta Crystallographica A38 (1982) 733-739 Electric field gradients and charge density in corundum alpha-Al2O3 CELL PARAMETERS: 4.760200 4.760200 12.99330 90.00000 90.00000 120.0000 SPACE GROUP: R-3c X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 25.62 61.91 3.4828 0 1 2 35.18 96.62 2.5530 1 0 4 37.81 44.59 2.3814 1 1 0 43.38 99.82 2.0871 1 1 3 46.20 1.46 1.9658 2 0 2 52.57 50.05 1.7414 0 2 4 57.51 100.00 1.6027 1 1 6 59.75 2.60 1.5479 2 1 1 61.14 3.30 1.5160 1 2 2 61.31 7.58 1.5121 0 1 8 66.52 39.66 1.4057 2 1 4 68.21 61.31 1.3749 3 0 0 70.41 1.31 1.3371 1 2 5 74.30 1.52 1.2765 2 0 8 76.87 17.73 1.2400 1 0 10 77.23 9.57 1.2351 1 1 9 80.68 2.29 1.1907 2 2 0 84.33 1.91 1.1481 2 2 3 86.33 1.40 1.1267 3 1 2 86.48 3.00 1.1250 1 2 8 88.97 8.37 1.0998 0 2 10 88.97 8.37 1.0998 0 2 10 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.