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, 3rd run, T = 1000 C
      _database_code_amcsd 0008824

      CELL PARAMETERS:    8.1701   8.1701   8.1701   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    545.359
      Density (g/cm3):      3.516
      MAX. ABS. INTENSITY / VOLUME**2:      18.25253388    
      RIR:      1.690
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.81         28.29        4.7170    1   1   1         8
                30.96         33.06        2.8886    2   2   0        12
                36.47        100.00        2.4634    3   1   1        24
                44.35         51.40        2.0425    4   0   0         6
                55.07          8.69        1.6677    4   2   2        24
                58.72          3.23        1.5723    3   3   3         8
                58.72         36.20        1.5723    5   1   1        24
                64.52         60.15        1.4443    4   4   0        12
                67.87          2.31        1.3810    5   3   1        48
                73.28          2.55        1.2918    6   2   0        24
                76.45          8.02        1.2459    5   3   3        24
                81.65          4.85        1.1793    4   4   4         8
                84.73          1.69        1.1440    5   5   1        24
                89.84          3.62        1.0918    6   4   2        48
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.