Hercynite
      Lavina B, Cesare B, Alvarez-Valero A M, Uchida H, Downs R T, Koneva A, Dera P
      American Mineralogist 94 (2009) 657-665
      Closure temperatures of intracrystalline ordering in anatectic and metamorphic
      hercynite, Fe2+Al2O4
      Note: Sample 441A
      Locality: the Anga metamorphic complex, Lake Baikal, Russia
      _database_code_amcsd 0004922

      CELL PARAMETERS:    8.1460   8.1460   8.1460   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    540.547
      Density (g/cm3):      4.098
      MAX. ABS. INTENSITY / VOLUME**2:      36.80670171    
      RIR:      2.924
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                31.05         62.37        2.8800    2   2   0        12
                36.59        100.00        2.4561    3   1   1        24
                44.49         14.61        2.0365    4   0   0         6
                48.73          4.96        1.8688    3   3   1        24
                55.24         17.73        1.6628    4   2   2        24
                58.91          3.60        1.5677    3   3   3         8
                58.91         39.04        1.5677    5   1   1        24
                64.74         50.77        1.4400    4   4   0        12
                73.53          5.69        1.2880    6   2   0        24
                76.72          9.87        1.2423    5   3   3        24
                81.94          1.50        1.1758    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.