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: Ch, annealed at T = 650 C, disordering, t = 33120 m
      _database_code_amcsd 0004067

      CELL PARAMETERS:    8.0887   8.0887   8.0887   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    529.220
      Density (g/cm3):      3.578
      MAX. ABS. INTENSITY / VOLUME**2:      18.56729087    
      RIR:      1.690
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                19.00         35.26        4.6700    1   1   1         8
                31.28         33.51        2.8598    2   2   0        12
                36.85        100.00        2.4388    3   1   1        24
                44.82         55.63        2.0222    4   0   0         6
                55.67          8.83        1.6511    4   2   2        24
                59.37          2.93        1.5567    3   3   3         8
                59.37         42.96        1.5567    5   1   1        24
                65.25         67.85        1.4299    4   4   0        12
                68.65          3.30        1.3672    5   3   1        48
                74.14          2.61        1.2789    6   2   0        24
                77.36          9.62        1.2335    5   3   3        24
                78.43          1.18        1.2194    6   2   2        24
                82.65          6.12        1.1675    4   4   4         8
                85.79          2.75        1.1326    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.