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 700 deg C for 500 min
      _database_code_amcsd 0002844

      CELL PARAMETERS:    8.0848   8.0848   8.0848   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    528.455
      Density (g/cm3):      3.576
      MAX. ABS. INTENSITY / VOLUME**2:      19.00742271    
      RIR:      1.731
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                19.01         31.96        4.6678    1   1   1         8
                31.29         33.45        2.8584    2   2   0        12
                36.87        100.00        2.4377    3   1   1        24
                38.58          1.10        2.3339    2   2   2         8
                44.84         56.33        2.0212    4   0   0         6
                55.70          9.48        1.6503    4   2   2        24
                59.40          3.16        1.5559    3   3   3         8
                59.40         44.22        1.5559    5   1   1        24
                65.29         72.90        1.4292    4   4   0        12
                68.68          3.18        1.3666    5   3   1        48
                74.18          3.01        1.2783    6   2   0        24
                77.41         10.48        1.2329    5   3   3        24
                82.70          6.79        1.1669    4   4   4         8
                85.84          2.85        1.1321    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.