Calcium-gamma
      Wyckoff R W G
      Crystal Structures 1 (1963) 7-83
      Second edition. Interscience Publishers, New York, New York
      Sample at T = 773 K
      Body centered cubic, bcc, structure
      _database_code_amcsd 0011208

      CELL PARAMETERS:    4.3800   4.3800   4.3800   90.000   90.000   90.000
      SPACE GROUP: Im3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     84.028
      Density (g/cm3):      1.584
      MAX. ABS. INTENSITY / VOLUME**2:      44.30578580    
      RIR:      9.109
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                28.83        100.00        3.0971    1   1   0        12
                41.22         16.57        2.1900    2   0   0         6
                51.08         31.03        1.7881    2   1   1        24
                59.71          8.53        1.5486    2   2   0        12
                67.64         10.45        1.3851    3   1   0        24
                75.14          2.33        1.2644    2   2   2         8
                82.38         10.10        1.1706    3   2   1        48
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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.