Spinel
      Princivalle F, Martignago F, Dal Negro A
      American Mineralogist 91 (2006) 313-318
      Kinetics of cation ordering in natural Mg(Al,Cr3+)2O4 spinels
      Locality: Olkhon metamorphic complex, Lake Baikal, Russia
      Sample: Sc, annealed at T = 650 C, ordering, t = 36 m
      _database_code_amcsd 0004098

      CELL PARAMETERS:    8.1166   8.1166   8.1166   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    534.715
      Density (g/cm3):      3.686
      MAX. ABS. INTENSITY / VOLUME**2:      21.37695221    
      RIR:      1.888
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.94         38.73        4.6861    1   1   1         8
                31.17         28.33        2.8697    2   2   0        12
                36.72        100.00        2.4472    3   1   1        24
                44.66         55.46        2.0292    4   0   0         6
                55.46          7.75        1.6568    4   2   2        24
                59.15          3.34        1.5620    3   3   3         8
                59.15         39.36        1.5620    5   1   1        24
                65.00         64.56        1.4348    4   4   0        12
                68.38          3.77        1.3720    5   3   1        48
                73.84          2.37        1.2833    6   2   0        24
                77.05          9.28        1.2378    5   3   3        24
                78.10          1.62        1.2236    6   2   2        24
                82.30          6.25        1.1715    4   4   4         8
                85.42          2.61        1.1366    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.