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 F54, disordered at 1000 C for 24 h, then ordered at 550 C
      Annealing time = 2460 min
      _database_code_amcsd 0019314

      CELL PARAMETERS:    8.1685   8.1685   8.1685   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    545.038
      Density (g/cm3):      3.845
      MAX. ABS. INTENSITY / VOLUME**2:      28.08892410    
      RIR:      2.378
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.82         14.31        4.7161    1   1   1         8
                30.96         35.89        2.8880    2   2   0        12
                36.48        100.00        2.4629    3   1   1        24
                44.36         36.34        2.0421    4   0   0         6
                55.08         10.52        1.6674    4   2   2        24
                58.73          4.04        1.5720    3   3   3         8
                58.73         34.91        1.5720    5   1   1        24
                64.54         56.91        1.4440    4   4   0        12
                67.88          1.38        1.3807    5   3   1        48
                73.30          3.43        1.2916    6   2   0        24
                76.47          9.01        1.2457    5   3   3        24
                77.52          1.28        1.2314    6   2   2        24
                81.67          4.08        1.1790    4   4   4         8
                84.75          1.21        1.1438    5   5   1        24
                89.86          4.75        1.0916    6   4   2        48
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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.