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 = 563 K on heating cycle, Mg.99Al2O4
      _database_code_amcsd 0002163

      CELL PARAMETERS:    8.1087   8.1087   8.1087   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    533.155
      Density (g/cm3):      3.544
      MAX. ABS. INTENSITY / VOLUME**2:      18.69808183    
      RIR:      1.718
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.96         30.53        4.6816    1   1   1         8
                31.20         32.81        2.8669    2   2   0        12
                36.76        100.00        2.4449    3   1   1        24
                38.46          1.20        2.3408    2   2   2         8
                44.70         56.45        2.0272    4   0   0         6
                55.52          9.34        1.6552    4   2   2        24
                59.21         42.13        1.5605    5   1   1        24
                59.21          3.27        1.5605    3   3   3         8
                65.07         71.56        1.4334    4   4   0        12
                68.45          3.00        1.3706    5   3   1        48
                73.93          2.96        1.2821    6   2   0        24
                77.13          9.97        1.2366    5   3   3        24
                82.40          6.67        1.1704    4   4   4         8
                85.52          2.57        1.1354    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.