Magnesiochromite
      Tabira Y, Withers R L
      Physics and Chemistry of Minerals 27 (1999) 112-118
      Cation ordering in NiAl2O4 spinel by a 111 systematic row CBED technique
      Sample: picrochromite
      _database_code_amcsd 0008365

      CELL PARAMETERS:    8.3327   8.3327   8.3327   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    578.572
      Density (g/cm3):      4.415
      MAX. ABS. INTENSITY / VOLUME**2:      46.36991835    
      RIR:      3.420
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.44         70.14        4.8109    1   1   1         8
                30.34         12.96        2.9461    2   2   0        12
                35.74        100.00        2.5124    3   1   1        24
                37.39         11.12        2.4054    2   2   2         8
                43.44         55.05        2.0832    4   0   0         6
                47.57          4.50        1.9117    3   3   1        24
                53.90          3.78        1.7009    4   2   2        24
                57.47          4.31        1.6036    3   3   3         8
                57.47         32.91        1.6036    5   1   1        24
                63.12         53.51        1.4730    4   4   0        12
                66.37          8.01        1.4085    5   3   1        48
                71.62          1.19        1.3175    6   2   0        24
                74.70          8.91        1.2707    5   3   3        24
                75.71          5.93        1.2562    6   2   2        24
                79.73          7.20        1.2027    4   4   4         8
                82.71          3.48        1.1668    5   5   1        24
                87.63          1.98        1.1135    6   4   2        48
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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.