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 IPNS, Argonne National Laboratory,
      T = 502 K on heating cycle, Mg.99Al2O4
      _database_code_amcsd 0002162

      CELL PARAMETERS:    8.1038   8.1038   8.1038   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    532.197
      Density (g/cm3):      3.551
      MAX. ABS. INTENSITY / VOLUME**2:      18.83808987    
      RIR:      1.728
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.97         30.27        4.6788    1   1   1         8
                31.22         32.81        2.8651    2   2   0        12
                36.78        100.00        2.4434    3   1   1        24
                38.48          1.21        2.3394    2   2   2         8
                44.73         56.42        2.0260    4   0   0         6
                55.56          9.44        1.6542    4   2   2        24
                59.25          3.30        1.5596    3   3   3         8
                59.25         42.38        1.5596    5   1   1        24
                65.11         72.19        1.4326    4   4   0        12
                68.50          2.97        1.3698    5   3   1        48
                73.98          3.03        1.2813    6   2   0        24
                77.19         10.11        1.2358    5   3   3        24
                82.46          6.73        1.1697    4   4   4         8
                85.59          2.58        1.1348    5   5   1        24
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.