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: L-Fe, 1st run, T = 400 C
      _database_code_amcsd 0008812

      CELL PARAMETERS:    8.1239   8.1239   8.1239   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    536.159
      Density (g/cm3):      3.574
      MAX. ABS. INTENSITY / VOLUME**2:      18.97282743    
      RIR:      1.728
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.92         37.60        4.6903    1   1   1         8
                31.14         32.97        2.8722    2   2   0        12
                36.69        100.00        2.4494    3   1   1        24
                44.62         56.79        2.0310    4   0   0         6
                55.41          8.56        1.6583    4   2   2        24
                59.09          2.79        1.5634    3   3   3         8
                59.09         43.95        1.5634    5   1   1        24
                64.93         69.14        1.4361    4   4   0        12
                68.31          3.67        1.3732    5   3   1        48
                73.76          2.46        1.2845    6   2   0        24
                76.96          9.67        1.2389    5   3   3        24
                78.02          1.11        1.2247    6   2   2        24
                82.21          6.55        1.1726    4   4   4         8
                85.33          3.11        1.1376    5   5   1        24
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.