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 = 400 C
      _database_code_amcsd 0008769

      CELL PARAMETERS:    8.1168   8.1168   8.1168   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    534.755
      Density (g/cm3):      3.577
      MAX. ABS. INTENSITY / VOLUME**2:      18.82076099    
      RIR:      1.713
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.94         38.09        4.6862    1   1   1         8
                31.17         32.83        2.8697    2   2   0        12
                36.72        100.00        2.4473    3   1   1        24
                44.66         57.47        2.0292    4   0   0         6
                55.46          8.55        1.6568    4   2   2        24
                59.14          2.77        1.5621    3   3   3         8
                59.14         44.00        1.5621    5   1   1        24
                65.00         69.57        1.4349    4   4   0        12
                68.37          3.66        1.3720    5   3   1        48
                73.84          2.46        1.2834    6   2   0        24
                77.04          9.64        1.2378    5   3   3        24
                78.10          1.02        1.2237    6   2   2        24
                82.30          6.61        1.1716    4   4   4         8
                85.42          3.12        1.1366    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.