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 = 700 C
      _database_code_amcsd 0004026

      CELL PARAMETERS:    8.1643   8.1643   8.1643   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    544.198
      Density (g/cm3):      3.614
      MAX. ABS. INTENSITY / VOLUME**2:      20.82760478    
      RIR:      1.876
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.83         24.13        4.7137    1   1   1         8
                30.98         34.73        2.8865    2   2   0        12
                36.50        100.00        2.4616    3   1   1        24
                44.38         46.33        2.0411    4   0   0         6
                55.11          9.48        1.6665    4   2   2        24
                58.77         37.23        1.5712    5   1   1        24
                58.77          3.33        1.5712    3   3   3         8
                64.57         60.28        1.4433    4   4   0        12
                67.92          1.98        1.3800    5   3   1        48
                73.34          2.88        1.2909    6   2   0        24
                76.51          8.53        1.2450    5   3   3        24
                81.72          4.64        1.1784    4   4   4         8
                84.80          1.63        1.1432    5   5   1        24
                89.92          4.28        1.0910    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.