Iron
      Zhang J, Guyot F
      Physics and Chemistry of Minerals 26 (1999) 206-211
      Thermal equation of iron and Fe0.91Si0.09
      Sample: P = 4.3 GPa, T = 299 K
      _database_code_amcsd 0008173

      CELL PARAMETERS:    2.8409   2.8409   2.8409   90.000   90.000   90.000
      SPACE GROUP: Im3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     22.928
      Density (g/cm3):      8.088
      MAX. ABS. INTENSITY / VOLUME**2:      312.0978834    
      RIR:     12.565
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                45.13        100.00        2.0088    1   1   0        12
                65.74         13.37        1.4204    2   0   0         6
                83.32         23.58        1.1598    2   1   1        24
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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.