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 = 683 K on heating cycle, MgAl2O4
      _database_code_amcsd 0002107

      CELL PARAMETERS:    8.1101   8.1101   8.1101   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    533.424
      Density (g/cm3):      3.542
      MAX. ABS. INTENSITY / VOLUME**2:      18.50006782    
      RIR:      1.700
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.95         30.47        4.6823    1   1   1         8
                31.19         32.88        2.8673    2   2   0        12
                36.75        100.00        2.4453    3   1   1        24
                38.45          1.24        2.3412    2   2   2         8
                44.70         56.27        2.0275    4   0   0         6
                55.51          9.24        1.6555    4   2   2        24
                59.20          3.23        1.5608    3   3   3         8
                59.20         41.37        1.5608    5   1   1        24
                65.06         70.28        1.4337    4   4   0        12
                68.44          2.90        1.3709    5   3   1        48
                73.91          2.89        1.2823    6   2   0        24
                77.12          9.64        1.2368    5   3   3        24
                82.38          6.46        1.1706    4   4   4         8
                85.51          2.46        1.1356    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.