Iron
      Wilburn D R, Bassett W A
      American Mineralogist 63 (1978) 591-596
      Hydrostatic compression of iron and related compounds: An overview
      P = 108 Kbar
      _database_code_amcsd 0000682

      CELL PARAMETERS:    2.8110   2.8110   2.8110   90.000   90.000   90.000
      SPACE GROUP: Im3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     22.212
      Density (g/cm3):      8.349
      MAX. ABS. INTENSITY / VOLUME**2:      320.5990905    
      RIR:     12.504
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                45.64        100.00        1.9877    1   1   0        12
                66.53         13.28        1.4055    2   0   0         6
                84.41         23.51        1.1476    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.