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: He3a/b
      _database_code_amcsd 0002874

      CELL PARAMETERS:    8.0937   8.0937   8.0937   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    530.202
      Density (g/cm3):      3.652
      MAX. ABS. INTENSITY / VOLUME**2:      21.35714886    
      RIR:      1.904
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.99         19.81        4.6729    1   1   1         8
                31.26         37.94        2.8616    2   2   0        12
                36.83        100.00        2.4403    3   1   1        24
                44.79         45.90        2.0234    4   0   0         6
                55.63         10.93        1.6521    4   2   2        24
                59.33          3.41        1.5576    3   3   3         8
                59.33         41.94        1.5576    5   1   1        24
                65.21         68.08        1.4308    4   4   0        12
                68.60          1.94        1.3681    5   3   1        48
                74.09          3.54        1.2797    6   2   0        24
                77.30         10.25        1.2343    5   3   3        24
                82.59          5.48        1.1682    4   4   4         8
                85.72          2.05        1.1333    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.