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 = 700 C for 90 days
      _database_code_amcsd 0002486

      CELL PARAMETERS:    8.0851   8.0851   8.0851   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    528.514
      Density (g/cm3):      3.577
      MAX. ABS. INTENSITY / VOLUME**2:      19.12360623    
      RIR:      1.741
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                19.01         31.46        4.6679    1   1   1         8
                31.29         33.90        2.8585    2   2   0        12
                36.87        100.00        2.4377    3   1   1        24
                38.57          1.13        2.3340    2   2   2         8
                44.84         55.61        2.0213    4   0   0         6
                55.70          9.60        1.6504    4   2   2        24
                59.40         44.41        1.5560    5   1   1        24
                59.40          3.15        1.5560    3   3   3         8
                65.28         72.98        1.4293    4   4   0        12
                68.68          3.19        1.3666    5   3   1        48
                74.18          3.00        1.2784    6   2   0        24
                77.40         10.51        1.2330    5   3   3        24
                78.47          1.01        1.2189    6   2   2        24
                82.69          6.87        1.1670    4   4   4         8
                85.83          2.92        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.