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 = 364 K on heating cycle, Mg.99Al2O4
      _database_code_amcsd 0002159

      CELL PARAMETERS:    8.0958   8.0958   8.0958   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    530.615
      Density (g/cm3):      3.561
      MAX. ABS. INTENSITY / VOLUME**2:      19.06520597    
      RIR:      1.743
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.99         30.06        4.6741    1   1   1         8
                31.25         32.81        2.8623    2   2   0        12
                36.82        100.00        2.4410    3   1   1        24
                38.52          1.22        2.3371    2   2   2         8
                44.78         56.46        2.0240    4   0   0         6
                55.62          9.58        1.6525    4   2   2        24
                59.31          3.34        1.5580    3   3   3         8
                59.31         42.96        1.5580    5   1   1        24
                65.19         73.33        1.4311    4   4   0        12
                68.58          2.98        1.3684    5   3   1        48
                74.06          3.12        1.2801    6   2   0        24
                77.28         10.38        1.2346    5   3   3        24
                82.56          6.87        1.1685    4   4   4         8
                85.69          2.63        1.1336    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.