Hercynite
      Andreozzi G B, Lucchesi S
      American Mineralogist 87 (2002) 1113-1120
      Intersite distribution of Fe2+ and Mg in the spinel (sensu stricto) -
      hercynite series by single-crystal X-ray diffraction
      Sample: He6a/e
      _database_code_amcsd 0002878

      CELL PARAMETERS:    8.1221   8.1221   8.1221   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    535.803
      Density (g/cm3):      3.910
      MAX. ABS. INTENSITY / VOLUME**2:      29.56687547    
      RIR:      2.462
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.92          4.80        4.6893    1   1   1         8
                31.15         49.69        2.8716    2   2   0        12
                36.70        100.00        2.4489    3   1   1        24
                44.63         25.74        2.0305    4   0   0         6
                48.88          2.04        1.8633    3   3   1        24
                55.42         14.33        1.6579    4   2   2        24
                59.10          3.65        1.5631    3   3   3         8
                59.10         39.22        1.5631    5   1   1        24
                64.95         56.93        1.4358    4   4   0        12
                73.78          4.66        1.2842    6   2   0        24
                76.98          9.91        1.2386    5   3   3        24
                82.23          2.88        1.1723    4   4   4         8
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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.