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 = 374 K on heating cycle, Mg.99Al2O4
      _database_code_amcsd 0002160

      CELL PARAMETERS:    8.0961   8.0961   8.0961   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    530.680
      Density (g/cm3):      3.561
      MAX. ABS. INTENSITY / VOLUME**2:      19.07766372    
      RIR:      1.745
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.99         30.23        4.6743    1   1   1         8
                31.25         32.73        2.8624    2   2   0        12
                36.82        100.00        2.4411    3   1   1        24
                38.52          1.18        2.3372    2   2   2         8
                44.78         56.53        2.0240    4   0   0         6
                55.61          9.54        1.6526    4   2   2        24
                59.31          3.35        1.5581    3   3   3         8
                59.31         43.01        1.5581    5   1   1        24
                65.18         73.33        1.4312    4   4   0        12
                68.57          3.05        1.3685    5   3   1        48
                74.06          3.10        1.2801    6   2   0        24
                77.28         10.42        1.2346    5   3   3        24
                82.56          6.92        1.1686    4   4   4         8
                85.69          2.68        1.1337    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.