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 = 600 C for 45 days
      _database_code_amcsd 0002487

      CELL PARAMETERS:    8.0856   8.0856   8.0856   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    528.612
      Density (g/cm3):      3.576
      MAX. ABS. INTENSITY / VOLUME**2:      19.05756878    
      RIR:      1.735
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                19.01         31.98        4.6682    1   1   1         8
                31.29         34.46        2.8587    2   2   0        12
                36.87        100.00        2.4379    3   1   1        24
                38.57          1.16        2.3341    2   2   2         8
                44.84         55.59        2.0214    4   0   0         6
                55.69          9.63        1.6505    4   2   2        24
                59.40          3.04        1.5561    3   3   3         8
                59.40         45.22        1.5561    5   1   1        24
                65.28         73.21        1.4293    4   4   0        12
                68.68          3.24        1.3667    5   3   1        48
                74.17          2.97        1.2784    6   2   0        24
                77.40         10.56        1.2330    5   3   3        24
                78.46          1.01        1.2190    6   2   2        24
                82.69          6.88        1.1671    4   4   4         8
                85.83          3.05        1.1322    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.