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 550 C
      Annealing time = 5340 min
      _database_code_amcsd 0019276

      CELL PARAMETERS:    8.1457   8.1457   8.1457   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    540.487
      Density (g/cm3):      3.776
      MAX. ABS. INTENSITY / VOLUME**2:      25.45067561    
      RIR:      2.195
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.87         16.83        4.7029    1   1   1         8
                31.05         35.63        2.8799    2   2   0        12
                36.59        100.00        2.4560    3   1   1        24
                44.49         39.80        2.0364    4   0   0         6
                55.25         10.31        1.6627    4   2   2        24
                58.91          3.85        1.5676    3   3   3         8
                58.91         36.21        1.5676    5   1   1        24
                64.74         59.29        1.4400    4   4   0        12
                68.10          1.61        1.3769    5   3   1        48
                73.53          3.32        1.2879    6   2   0        24
                76.72          9.13        1.2422    5   3   3        24
                77.77          1.18        1.2280    6   2   2        24
                81.94          4.46        1.1757    4   4   4         8
                85.04          1.41        1.1406    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.