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 = 464 K on cooling cycle, MgAl2O4
      _database_code_amcsd 0002142

      CELL PARAMETERS:    8.0936   8.0936   8.0936   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    530.192
      Density (g/cm3):      3.564
      MAX. ABS. INTENSITY / VOLUME**2:      18.78018769    
      RIR:      1.716
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.99         32.10        4.6729    1   1   1         8
                31.26         33.05        2.8615    2   2   0        12
                36.83        100.00        2.4403    3   1   1        24
                38.53          1.18        2.3364    2   2   2         8
                44.79         56.99        2.0234    4   0   0         6
                55.63          9.29        1.6521    4   2   2        24
                59.33          3.14        1.5576    3   3   3         8
                59.33         43.29        1.5576    5   1   1        24
                65.21         72.39        1.4308    4   4   0        12
                68.60          3.19        1.3681    5   3   1        48
                74.09          2.90        1.2797    6   2   0        24
                77.30         10.13        1.2343    5   3   3        24
                82.59          6.86        1.1682    4   4   4         8
                85.72          2.81        1.1333    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.