Spinel
      Martignago F, Andreozzi G B, Dal Negro A
      American Mineralogist 91 (2006) 306-312
      Thermodynamics and kinetics of cation ordering in natural and synthetic
      Mg(Al,Fe3+)2O4 spinels from in situ high-temperature X-ray diffraction
      Locality: synthetic
      Sample: MgFe20, T = 650 C
      _database_code_amcsd 0004025

      CELL PARAMETERS:    8.1606   8.1606   8.1606   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    543.458
      Density (g/cm3):      3.618
      MAX. ABS. INTENSITY / VOLUME**2:      20.90888888    
      RIR:      1.882
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.83         26.17        4.7115    1   1   1         8
                31.00         33.88        2.8852    2   2   0        12
                36.52        100.00        2.4605    3   1   1        24
                44.40         47.69        2.0401    4   0   0         6
                55.14          9.29        1.6658    4   2   2        24
                58.80         38.05        1.5705    5   1   1        24
                58.80          3.33        1.5705    3   3   3         8
                64.61         61.53        1.4426    4   4   0        12
                67.96          2.24        1.3794    5   3   1        48
                73.38          2.84        1.2903    6   2   0        24
                76.56          8.79        1.2445    5   3   3        24
                77.60          1.01        1.2303    6   2   2        24
                81.76          4.93        1.1779    4   4   4         8
                84.85          1.81        1.1427    5   5   1        24
                89.97          4.34        1.0905    6   4   2        48
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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.