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 441B
      Locality: the Anga metamorphic complex, Lake Baikal, Russia
      _database_code_amcsd 0004923

      CELL PARAMETERS:    8.1451   8.1451   8.1451   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    540.367
      Density (g/cm3):      4.079
      MAX. ABS. INTENSITY / VOLUME**2:      36.31017102    
      RIR:      2.899
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                31.06         62.54        2.8797    2   2   0        12
                36.59        100.00        2.4558    3   1   1        24
                44.49         14.67        2.0363    4   0   0         6
                48.73          5.06        1.8686    3   3   1        24
                55.25         17.89        1.6626    4   2   2        24
                58.92          3.61        1.5675    3   3   3         8
                58.92         39.19        1.5675    5   1   1        24
                64.74         51.13        1.4399    4   4   0        12
                73.54          5.78        1.2879    6   2   0        24
                76.73          9.94        1.2421    5   3   3        24
                81.95          1.50        1.1756    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.