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-Cr, 3rd run, T = 600 C
      _database_code_amcsd 0008774

      CELL PARAMETERS:    8.1335   8.1335   8.1335   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    538.062
      Density (g/cm3):      3.555
      MAX. ABS. INTENSITY / VOLUME**2:      18.31593617    
      RIR:      1.678
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.90         39.31        4.6959    1   1   1         8
                31.10         32.98        2.8756    2   2   0        12
                36.64        100.00        2.4523    3   1   1        24
                44.56         57.52        2.0334    4   0   0         6
                55.34          8.23        1.6602    4   2   2        24
                59.01          2.65        1.5653    3   3   3         8
                59.01         43.19        1.5653    5   1   1        24
                64.85         67.40        1.4378    4   4   0        12
                68.21          3.73        1.3748    5   3   1        48
                73.66          2.26        1.2860    6   2   0        24
                76.86          9.16        1.2403    5   3   3        24
                77.91          1.03        1.2262    6   2   2        24
                82.09          6.37        1.1740    4   4   4         8
                85.20          3.07        1.1389    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.