Spinel
      Princivalle F, Martignago F, Nestola F, Dal Negro A
      European Journal of Mineralogy 24 (2012) 633-643
      Kinetics of cation ordering in synthetic Mg(Al,Fe3+)2O4 spinels
      Note Sample F39, disordered at 1000 C for 24 h, then ordered at 650 C
      Annealing time = 45 min
      _database_code_amcsd 0019288

      CELL PARAMETERS:    8.1462   8.1462   8.1462   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    540.587
      Density (g/cm3):      3.772
      MAX. ABS. INTENSITY / VOLUME**2:      25.30803009    
      RIR:      2.185
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.87         17.74        4.7032    1   1   1         8
                31.05         34.89        2.8801    2   2   0        12
                36.59        100.00        2.4562    3   1   1        24
                44.49         40.69        2.0366    4   0   0         6
                55.24         10.11        1.6628    4   2   2        24
                58.91         36.12        1.5677    5   1   1        24
                58.91          3.87        1.5677    3   3   3         8
                64.73         59.56        1.4401    4   4   0        12
                68.09          1.71        1.3770    5   3   1        48
                73.53          3.27        1.2880    6   2   0        24
                76.71          9.12        1.2423    5   3   3        24
                77.77          1.20        1.2281    6   2   2        24
                81.94          4.57        1.1758    4   4   4         8
                85.04          1.45        1.1407    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.