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 = 900 C
      _database_code_amcsd 0004028

      CELL PARAMETERS:    8.1800   8.1800   8.1800   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    547.344
      Density (g/cm3):      3.594
      MAX. ABS. INTENSITY / VOLUME**2:      20.40512706    
      RIR:      1.848
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.79         24.11        4.7227    1   1   1         8
                30.92         34.12        2.8921    2   2   0        12
                36.43        100.00        2.4664    3   1   1        24
                44.29         46.27        2.0450    4   0   0         6
                54.99          9.21        1.6697    4   2   2        24
                58.64         35.56        1.5742    5   1   1        24
                58.64          3.36        1.5742    3   3   3         8
                64.43         58.19        1.4460    4   4   0        12
                67.77          1.89        1.3827    5   3   1        48
                73.18          2.77        1.2934    6   2   0        24
                76.34          8.07        1.2474    5   3   3        24
                81.53          4.39        1.1807    4   4   4         8
                84.60          1.46        1.1454    5   5   1        24
                89.70          3.89        1.0931    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.