Corundum
      d'Amour H, Schiferl D, Denner W, Schulz H, Holzapfel W B
      Journal of Applied Physics 49 (1978) 4411-4416
      High-pressure single-crystal structure determinations for ruby up to 90 kbar
      using an automatic diffractometer
      P = 28 kbar
      _database_code_amcsd 0012915

      CELL PARAMETERS:    4.7517   4.7517  12.9650   90.000   90.000  120.000
      SPACE GROUP: R-3c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    253.514
      Density (g/cm3):      4.007
      MAX. ABS. INTENSITY / VOLUME**2:      12.54462578    
      RIR:      1.019
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                25.64         61.86        3.4742    0   1   2         6
                35.25         94.64        2.5463    1   0   4         6
                37.87         44.26        2.3758    1   1   0         6
                43.47         98.26        2.0820    1   1   3        12
                46.29          1.48        1.9611    2   0   2         6
                52.69         49.59        1.7371    0   2   4         6
                57.67        100.00        1.5986    1   1   6        12
                59.90          2.62        1.5443    2   1   1        12
                61.29          3.34        1.5124    1   2   2        12
                61.49          7.35        1.5079    0   1   8         6
                66.70         39.55        1.4023    2   1   4        12
                68.39         61.15        1.3717    3   0   0         6
                70.62          1.32        1.3338    1   2   5        12
                74.53          1.45        1.2731    2   0   8         6
                77.13         17.90        1.2366    1   0  10         6
                77.49          9.51        1.2318    1   1   9        12
                80.93          2.33        1.1879    2   2   0         6
                84.60          1.90        1.1454    2   2   3        12
                86.61          1.44        1.1240    3   1   2        12
                86.78          2.91        1.1222    1   2   8        12
                89.31          8.53        1.0969    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.