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 = 97,260 min
      _database_code_amcsd 0019282

      CELL PARAMETERS:    8.1480   8.1480   8.1480   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    540.945
      Density (g/cm3):      3.767
      MAX. ABS. INTENSITY / VOLUME**2:      25.04031910    
      RIR:      2.165
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.86         19.33        4.7042    1   1   1         8
                31.04         35.48        2.8808    2   2   0        12
                36.58        100.00        2.4567    3   1   1        24
                44.48         40.82        2.0370    4   0   0         6
                55.23         10.06        1.6632    4   2   2        24
                58.90          3.67        1.5681    3   3   3         8
                58.90         37.35        1.5681    5   1   1        24
                64.72         59.60        1.4404    4   4   0        12
                68.08          1.84        1.3773    5   3   1        48
                73.51          3.18        1.2883    6   2   0        24
                76.69          9.20        1.2426    5   3   3        24
                77.75          1.31        1.2284    6   2   2        24
                81.92          4.56        1.1761    4   4   4         8
                85.01          1.61        1.1409    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.