Spinel
      Martignago F, Dal Negro A, Carbonin S
      Physics and Chemistry of Minerals 30 (2003) 401-408
      How Cr3+ and Fe3+ affect Mg-Al order-disorder transformation at high temperature
      in natural spinels
      Sample: M-Cr, 1st run, T = 28 C
      _database_code_amcsd 0008785

      CELL PARAMETERS:    8.1018   8.1018   8.1018   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    531.795
      Density (g/cm3):      3.638
      MAX. ABS. INTENSITY / VOLUME**2:      20.09451570    
      RIR:      1.799
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.97         40.08        4.6776    1   1   1         8
                31.23         31.61        2.8644    2   2   0        12
                36.79        100.00        2.4428    3   1   1        24
                44.74         57.50        2.0254    4   0   0         6
                55.57          8.50        1.6538    4   2   2        24
                59.26          2.87        1.5592    3   3   3         8
                59.26         45.07        1.5592    5   1   1        24
                65.13         71.01        1.4322    4   4   0        12
                68.52          3.95        1.3695    5   3   1        48
                74.00          2.53        1.2810    6   2   0        24
                77.21         10.22        1.2355    5   3   3        24
                78.27          1.27        1.2214    6   2   2        24
                82.48          6.93        1.1694    4   4   4         8
                85.61          3.36        1.1345    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.