Iron
      Wyckoff R W G
      Crystal Structures 1 (1963) 7-83
      Second edition. Interscience Publishers, New York, New York
      Cubic closest packed, ccp, structure
      _database_code_amcsd 0011146

      CELL PARAMETERS:    3.5910   3.5910   3.5910   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     46.307
      Density (g/cm3):      8.009
      MAX. ABS. INTENSITY / VOLUME**2:      227.2861196    
      RIR:      9.240
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                43.66        100.00        2.0733    1   1   1         8
                50.85         45.11        1.7955    2   0   0         6
                74.78         22.68        1.2696    2   2   0        12
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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.