Hercynite
      Waerenborgh J C, Figueiredo M O, Cabral J M P, Pereira L C J
      Physics and Chemistry of Minerals 21 (1994) 460-468
      Powder XRD structure refinements and 57Fe Mossbauer effect study
      of synthetic Zn1-xFexAl2O4 (o<x<=1) spinels annealed at different temperatures
      Sample: 1.0, annealed at 725 degrees C for 48 hours, then quenched
      _database_code_amcsd 0007893

      CELL PARAMETERS:    8.1547   8.1547   8.1547   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    542.281
      Density (g/cm3):      4.257
      MAX. ABS. INTENSITY / VOLUME**2:      42.35551998    
      RIR:      3.240
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                31.02         61.19        2.8831    2   2   0        12
                36.55        100.00        2.4587    3   1   1        24
                44.44         12.41        2.0387    4   0   0         6
                48.67          4.28        1.8708    3   3   1        24
                55.18         17.62        1.6646    4   2   2        24
                58.84         36.44        1.5694    5   1   1        24
                58.84          3.95        1.5694    3   3   3         8
                64.66         47.20        1.4416    4   4   0        12
                73.44          5.74        1.2894    6   2   0        24
                76.62          9.61        1.2436    5   3   3        24
                77.67          1.04        1.2294    6   2   2        24
                81.83          1.25        1.1770    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.