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 = 1100 K on heating cycle, MgAl2O4
      _database_code_amcsd 0002114

      CELL PARAMETERS:    8.1398   8.1398   8.1398   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    539.311
      Density (g/cm3):      3.504
      MAX. ABS. INTENSITY / VOLUME**2:      17.73918096    
      RIR:      1.649
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.88         30.69        4.6995    1   1   1         8
                31.08         32.82        2.8779    2   2   0        12
                36.62        100.00        2.4542    3   1   1        24
                38.31          1.21        2.3498    2   2   2         8
                44.52         55.83        2.0349    4   0   0         6
                55.29          8.77        1.6615    4   2   2        24
                58.96          3.14        1.5665    3   3   3         8
                58.96         39.11        1.5665    5   1   1        24
                64.79         66.17        1.4389    4   4   0        12
                68.15          2.82        1.3759    5   3   1        48
                73.60          2.60        1.2870    6   2   0        24
                76.79          8.76        1.2413    5   3   3        24
                82.02          5.93        1.1749    4   4   4         8
                85.12          2.22        1.1398    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.