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 = 500 C
      _database_code_amcsd 0004049

      CELL PARAMETERS:    8.1256   8.1256   8.1256   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    536.496
      Density (g/cm3):      3.575
      MAX. ABS. INTENSITY / VOLUME**2:      19.30793559    
      RIR:      1.759
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.92         29.38        4.6913    1   1   1         8
                31.13         32.76        2.8728    2   2   0        12
                36.68        100.00        2.4500    3   1   1        24
                44.61         53.01        2.0314    4   0   0         6
                55.39          9.12        1.6586    4   2   2        24
                59.07         39.49        1.5638    5   1   1        24
                59.07          3.30        1.5638    3   3   3         8
                64.92         65.93        1.4364    4   4   0        12
                68.29          2.62        1.3735    5   3   1        48
                73.75          2.84        1.2848    6   2   0        24
                76.95          9.19        1.2391    5   3   3        24
                82.19          5.69        1.1728    4   4   4         8
                85.30          2.10        1.1378    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.