Spinel
      Andreozzi G B, Princivalle F
      American Mineralogist 87 (2002) 838-844
      Kinetics of cation ordering in synthetic MgAl2O4 spinel
      Sample: annealed at 1000 deg C for 12h, then isothermally ordered at 900 deg C for .5 min
      _database_code_amcsd 0002825

      CELL PARAMETERS:    8.0835   8.0835   8.0835   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    528.200
      Density (g/cm3):      3.577
      MAX. ABS. INTENSITY / VOLUME**2:      19.14651827    
      RIR:      1.743
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                19.02         29.53        4.6670    1   1   1         8
                31.30         32.90        2.8579    2   2   0        12
                36.88        100.00        2.4373    3   1   1        24
                38.58          1.11        2.3335    2   2   2         8
                44.85         55.67        2.0209    4   0   0         6
                55.71          9.53        1.6500    4   2   2        24
                59.41          3.38        1.5557    3   3   3         8
                59.41         42.47        1.5557    5   1   1        24
                65.30         72.04        1.4290    4   4   0        12
                68.70          2.95        1.3664    5   3   1        48
                74.19          3.11        1.2781    6   2   0        24
                77.42         10.32        1.2327    5   3   3        24
                82.71          6.66        1.1668    4   4   4         8
                85.86          2.55        1.1319    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.