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, 1st run, T = 450 C
      _database_code_amcsd 0008768

      CELL PARAMETERS:    8.1207   8.1207   8.1207   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    535.526
      Density (g/cm3):      3.572
      MAX. ABS. INTENSITY / VOLUME**2:      18.64728226    
      RIR:      1.700
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.93         39.10        4.6885    1   1   1         8
                31.15         32.97        2.8711    2   2   0        12
                36.70        100.00        2.4485    3   1   1        24
                44.63         57.60        2.0302    4   0   0         6
                55.43          8.41        1.6576    4   2   2        24
                59.11         44.10        1.5628    5   1   1        24
                59.11          2.69        1.5628    3   3   3         8
                64.96         68.95        1.4356    4   4   0        12
                68.34          3.77        1.3726    5   3   1        48
                73.80          2.37        1.2840    6   2   0        24
                77.00          9.53        1.2384    5   3   3        24
                78.06          1.07        1.2242    6   2   2        24
                82.25          6.57        1.1721    4   4   4         8
                85.37          3.18        1.1371    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.