Spinel
      Andreozzi G B, Princivalle F, Skogby H, Della Giusta A
      American Mineralogist 85 (2000) 1164-1171
      Cation ordering and structural variations with temperature in
      MgAl2O4 spinel: An X-ray single crystal study
      Sample: quenched from T = 950 C for 1 day
      _database_code_amcsd 0002481

      CELL PARAMETERS:    8.0838   8.0838   8.0838   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    528.259
      Density (g/cm3):      3.576
      MAX. ABS. INTENSITY / VOLUME**2:      19.26035889    
      RIR:      1.754
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                19.02         28.43        4.6672    1   1   1         8
                31.30         33.78        2.8581    2   2   0        12
                36.88        100.00        2.4374    3   1   1        24
                38.58          1.21        2.3336    2   2   2         8
                44.85         54.40        2.0210    4   0   0         6
                55.70          9.81        1.6501    4   2   2        24
                59.41          3.37        1.5557    3   3   3         8
                59.41         42.78        1.5557    5   1   1        24
                65.30         72.13        1.4290    4   4   0        12
                68.69          2.87        1.3664    5   3   1        48
                74.19          3.14        1.2782    6   2   0        24
                77.42         10.38        1.2328    5   3   3        24
                82.71          6.66        1.1668    4   4   4         8
                85.85          2.59        1.1320    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.