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: Shishimsk Mountains, Urals, Russia
      Sample: 3dis, T = 900 C
      _database_code_amcsd 0004055

      CELL PARAMETERS:    8.1581   8.1581   8.1581   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    542.959
      Density (g/cm3):      3.537
      MAX. ABS. INTENSITY / VOLUME**2:      18.60236675    
      RIR:      1.713
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.84         28.12        4.7101    1   1   1         8
                31.00         33.38        2.8843    2   2   0        12
                36.53        100.00        2.4598    3   1   1        24
                44.42         51.30        2.0395    4   0   0         6
                55.15          8.86        1.6653    4   2   2        24
                58.82          3.21        1.5700    3   3   3         8
                58.82         37.08        1.5700    5   1   1        24
                64.63         61.36        1.4422    4   4   0        12
                67.98          2.34        1.3790    5   3   1        48
                73.40          2.63        1.2899    6   2   0        24
                76.58          8.27        1.2441    5   3   3        24
                81.79          5.00        1.1775    4   4   4         8
                84.88          1.78        1.1424    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.