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 = 405 K on cooling cycle, MgAl2O4
      _database_code_amcsd 0002143

      CELL PARAMETERS:    8.0916   8.0916   8.0916   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    529.787
      Density (g/cm3):      3.567
      MAX. ABS. INTENSITY / VOLUME**2:      18.87057736    
      RIR:      1.723
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                19.00         31.82        4.6717    1   1   1         8
                31.27         33.11        2.8608    2   2   0        12
                36.84        100.00        2.4397    3   1   1        24
                38.54          1.21        2.3358    2   2   2         8
                44.80         56.80        2.0229    4   0   0         6
                55.65          9.43        1.6517    4   2   2        24
                59.35          3.17        1.5572    3   3   3         8
                59.35         43.48        1.5572    5   1   1        24
                65.22         72.83        1.4304    4   4   0        12
                68.62          3.09        1.3677    5   3   1        48
                74.11          2.99        1.2794    6   2   0        24
                77.33         10.23        1.2340    5   3   3        24
                82.61          6.82        1.1679    4   4   4         8
                85.75          2.76        1.1330    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.