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 = 773 K on heating cycle, MgAl2O4
      _database_code_amcsd 0002147

      CELL PARAMETERS:    8.1168   8.1168   8.1168   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    534.764
      Density (g/cm3):      3.534
      MAX. ABS. INTENSITY / VOLUME**2:      18.17156653    
      RIR:      1.674
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.94         32.41        4.6863    1   1   1         8
                31.17         32.78        2.8697    2   2   0        12
                36.72        100.00        2.4473    3   1   1        24
                38.42          1.07        2.3431    2   2   2         8
                44.66         56.92        2.0292    4   0   0         6
                55.46          8.73        1.6568    4   2   2        24
                59.14         41.30        1.5621    5   1   1        24
                59.14          3.10        1.5621    3   3   3         8
                65.00         68.83        1.4349    4   4   0        12
                68.37          3.33        1.3720    5   3   1        48
                73.84          2.58        1.2834    6   2   0        24
                77.04          9.39        1.2378    5   3   3        24
                82.30          6.56        1.1716    4   4   4         8
                85.42          2.70        1.1366    5   5   1        24
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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.