Hercynite
      Larsson L, O'Neill H St C, Annersten H
      European Journal of Mineralogy 6 (1994) 39-51
      Crystal chemistry of synthetic hercynite (FeAl2O4)
      from XRD structural refinements and Mossbauer spectroscopy
      Sample: T = 750 C, Sample BG2/1
      _database_code_amcsd 0006520

      CELL PARAMETERS:    8.1523   8.1523   8.1523   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    541.802
      Density (g/cm3):      4.261
      MAX. ABS. INTENSITY / VOLUME**2:      42.03210658    
      RIR:      3.212
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                31.03         60.22        2.8823    2   2   0        12
                36.56        100.00        2.4580    3   1   1        24
                44.45         12.80        2.0381    4   0   0         6
                48.69          4.05        1.8703    3   3   1        24
                55.20         17.31        1.6641    4   2   2        24
                58.86         36.19        1.5689    5   1   1        24
                58.86          3.93        1.5689    3   3   3         8
                64.68         46.82        1.4411    4   4   0        12
                73.46          5.64        1.2890    6   2   0        24
                76.65          9.48        1.2432    5   3   3        24
                77.70          1.05        1.2290    6   2   2        24
                81.86          1.23        1.1767    4   4   4         8
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.