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: He9a/h
      _database_code_amcsd 0002881

      CELL PARAMETERS:    8.1494   8.1494   8.1494   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    541.224
      Density (g/cm3):      4.181
      MAX. ABS. INTENSITY / VOLUME**2:      39.13787883    
      RIR:      3.048
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                31.04         57.17        2.8812    2   2   0        12
                36.57        100.00        2.4571    3   1   1        24
                44.47         15.61        2.0373    4   0   0         6
                48.70          3.36        1.8696    3   3   1        24
                55.22         16.40        1.6635    4   2   2        24
                58.88          3.87        1.5684    3   3   3         8
                58.88         36.73        1.5684    5   1   1        24
                64.71         49.25        1.4406    4   4   0        12
                73.50          5.31        1.2885    6   2   0        24
                76.68          9.53        1.2428    5   3   3        24
                77.73          1.01        1.2286    6   2   2        24
                81.90          1.65        1.1763    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.