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 = 120 m
      _database_code_amcsd 0004099

      CELL PARAMETERS:    8.1174   8.1174   8.1174   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    534.873
      Density (g/cm3):      3.674
      MAX. ABS. INTENSITY / VOLUME**2:      21.00922754    
      RIR:      1.862
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.94         40.28        4.6866    1   1   1         8
                31.16         29.04        2.8699    2   2   0        12
                36.72        100.00        2.4475    3   1   1        24
                44.65         55.61        2.0294    4   0   0         6
                55.45          7.77        1.6570    4   2   2        24
                59.14          3.18        1.5622    3   3   3         8
                59.14         40.51        1.5622    5   1   1        24
                64.99         64.78        1.4350    4   4   0        12
                68.37          3.88        1.3721    5   3   1        48
                73.83          2.32        1.2835    6   2   0        24
                77.04          9.36        1.2379    5   3   3        24
                78.10          1.69        1.2237    6   2   2        24
                82.29          6.22        1.1716    4   4   4         8
                85.41          2.77        1.1367    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.