Spinel
      Redfern S A T, Harrison R J, O'Neill H St C, Wood D R R
      American Mineralogist 84 (1999) 299-310
      Thermodynamics and kinetics of cation ordering in MgAl2O4 spinel up to 1600 C
      from in situ neutron diffraction
      Data collected at ISIS, Rutherford Appleton Laboratory, U.K.
      T = 1773 K on heating cycle, MgAl2O4
      _database_code_amcsd 0002157

      CELL PARAMETERS:    8.2009   8.2009   8.2009   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    551.552
      Density (g/cm3):      3.426
      MAX. ABS. INTENSITY / VOLUME**2:      16.05900731    
      RIR:      1.526
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.74         29.00        4.7348    1   1   1         8
                30.84         32.92        2.8995    2   2   0        12
                36.33        100.00        2.4727    3   1   1        24
                38.01          1.15        2.3674    2   2   2         8
                44.17         53.03        2.0502    4   0   0         6
                54.84          7.91        1.6740    4   2   2        24
                58.48          3.04        1.5783    3   3   3         8
                58.48         32.87        1.5783    5   1   1        24
                64.25         55.38        1.4497    4   4   0        12
                67.58          2.23        1.3862    5   3   1        48
                72.96          2.11        1.2967    6   2   0        24
                76.11          6.75        1.2506    5   3   3        24
                81.28          4.37        1.1837    4   4   4         8
                84.34          1.44        1.1484    5   5   1        24
                89.41          2.63        1.0959    6   4   2        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.