Iron
      Wilburn D R, Bassett W A
      American Mineralogist 63 (1978) 591-596
      Hydrostatic compression of iron and related compounds: An overview
      P = 75 Kbar
      _database_code_amcsd 0000678

      CELL PARAMETERS:    2.8290   2.8290   2.8290   90.000   90.000   90.000
      SPACE GROUP: Im3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     22.641
      Density (g/cm3):      8.190
      MAX. ABS. INTENSITY / VOLUME**2:      315.4518101    
      RIR:     12.541
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                45.33        100.00        2.0004    1   1   0        12
                66.05         13.33        1.4145    2   0   0         6
                83.75         23.55        1.1549    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.