Iron
      Zhang J, Guyot F
      Physics and Chemistry of Minerals 26 (1999) 206-211
      Thermal equation of iron and Fe0.91Si0.09
      Sample: P = 3.6 GPa, T = 573 K
      _database_code_amcsd 0008178

      CELL PARAMETERS:    2.8544   2.8544   2.8544   90.000   90.000   90.000
      SPACE GROUP: Im3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     23.257
      Density (g/cm3):      7.974
      MAX. ABS. INTENSITY / VOLUME**2:      308.3396278    
      RIR:     12.591
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                44.91        100.00        2.0184    1   1   0        12
                65.39         13.41        1.4272    2   0   0         6
                82.84         23.61        1.1653    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.