Magnesiochromite
      O'Neill H St C, Dollase W A
      Physics and Chemistry of Minerals 20 (1994) 541-555
      Crystal structures and cation distributions in simple spinels from powder XRD
      structural refinements: MgCr2O4, ZnCr2O4, Fe3O4 and the temperature dependence
      of the cation distribution in ZnAl2O4
      Sample: MgCr2O4/1300, original background less 7 to 18 degrees 2 theta
      Locality: synthetic
      _database_code_amcsd 0007827

      CELL PARAMETERS:    8.3339   8.3339   8.3339   90.000   90.000   90.000
      SPACE GROUP: Fd-3m     
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    578.822
      Density (g/cm3):      4.413
      MAX. ABS. INTENSITY / VOLUME**2:      46.14924069    
      RIR:      3.405
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.44         75.55        4.8116    1   1   1         8
                30.33         12.01        2.9465    2   2   0        12
                35.73        100.00        2.5128    3   1   1        24
                37.38         11.99        2.4058    2   2   2         8
                43.43         57.23        2.0835    4   0   0         6
                47.56          5.10        1.9119    3   3   1        24
                53.90          3.47        1.7012    4   2   2        24
                57.46          4.31        1.6039    3   3   3         8
                57.46         33.22        1.6039    5   1   1        24
                63.11         53.98        1.4732    4   4   0        12
                66.36          8.79        1.4087    5   3   1        48
                71.61          1.09        1.3177    6   2   0        24
                74.69          9.02        1.2709    5   3   3        24
                75.70          6.46        1.2564    6   2   2        24
                79.72          7.58        1.2029    4   4   4         8
                82.69          3.77        1.1670    5   5   1        24
                87.61          1.85        1.1137    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.