Corundum
      Finger L W, Hazen R M
      Journal of Applied Physics 49 (1978) 5823-5826
      Crystal structure and compression of ruby to 46 kbar
      P = 28 kbar
      _database_code_amcsd 0012924

      CELL PARAMETERS:    4.7437   4.7437  12.9430   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    252.232
      Density (g/cm3):      4.027
      MAX. ABS. INTENSITY / VOLUME**2:      12.39319187    
      RIR:      1.002
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                25.69         61.73        3.4683    0   1   2         6
                35.31         96.67        2.5420    1   0   4         6
                37.93         45.14        2.3719    1   1   0         6
                43.54         97.74        2.0785    1   1   3        12
                46.38          1.66        1.9578    2   0   2         6
                52.79         49.11        1.7342    0   2   4         6
                57.77        100.00        1.5959    1   1   6        12
                60.01          2.34        1.5417    2   1   1        12
                61.41          3.51        1.5099    1   2   2        12
                61.61          7.09        1.5053    0   1   8         6
                66.83         39.11        1.3999    2   1   4        12
                68.52         60.47        1.3694    3   0   0         6
                70.75          1.16        1.3316    1   2   5        12
                74.68          1.47        1.2710    2   0   8         6
                77.29         17.72        1.2345    1   0  10         6
                77.64          9.02        1.2297    1   1   9        12
                81.09          2.36        1.1859    2   2   0         6
                84.78          1.82        1.1435    2   2   3        12
                86.79          1.37        1.1221    3   1   2        12
                86.97          2.89        1.1203    1   2   8        12
                89.50          8.62        1.0950    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.