Corundum
      Lewis J, Schwarzenbach D, Flack H D
      Acta Crystallographica A38 (1982) 733-739
      Electric field gradients and charge density in corundum alpha-Al2O3
      _database_code_amcsd 0009325

      CELL PARAMETERS:    4.7602   4.7602  12.9933   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    254.977
      Density (g/cm3):      3.984
      MAX. ABS. INTENSITY / VOLUME**2:      12.23545548    
      RIR:      1.000
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                25.59         61.91        3.4808    0   1   2         6
                35.17         96.62        2.5514    1   0   4         6
                37.80         44.59        2.3801    1   1   0         6
                43.38         99.82        2.0859    1   1   3        12
                46.21          1.46        1.9647    2   0   2         6
                52.58         50.05        1.7404    0   2   4         6
                57.54        100.00        1.6018    1   1   6        12
                59.78          2.60        1.5471    2   1   1        12
                61.17          3.30        1.5152    1   2   2        12
                61.35          7.58        1.5111    0   1   8         6
                66.56         39.66        1.4049    2   1   4        12
                68.25         61.31        1.3742    3   0   0         6
                70.46          1.31        1.3363    1   2   5        12
                74.36          1.52        1.2757    2   0   8         6
                76.94         17.73        1.2392    1   0  10         6
                77.30          9.57        1.2344    1   1   9        12
                80.75          2.29        1.1901    2   2   0         6
                84.41          1.91        1.1475    2   2   3        12
                86.41          1.40        1.1261    3   1   2        12
                86.57          3.00        1.1244    1   2   8        12
                89.07          8.37        1.0992    0   2  10         6
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       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.