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 = 969 K on heating cycle, MgAl2O4
      _database_code_amcsd 0002112

      CELL PARAMETERS:    8.1310   8.1310   8.1310   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    537.562
      Density (g/cm3):      3.515
      MAX. ABS. INTENSITY / VOLUME**2:      17.85942259    
      RIR:      1.654
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.90         32.46        4.6944    1   1   1         8
                31.11         33.12        2.8747    2   2   0        12
                36.66        100.00        2.4516    3   1   1        24
                38.35          1.21        2.3472    2   2   2         8
                44.57         56.62        2.0327    4   0   0         6
                55.35          8.82        1.6597    4   2   2        24
                59.03          3.01        1.5648    3   3   3         8
                59.03         40.84        1.5648    5   1   1        24
                64.87         67.93        1.4374    4   4   0        12
                68.24          3.04        1.3744    5   3   1        48
                73.69          2.60        1.2856    6   2   0        24
                76.88          9.07        1.2400    5   3   3        24
                82.12          6.22        1.1736    4   4   4         8
                85.23          2.50        1.1386    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.