Tungsten
      Dubrovinsky L S, Saxena S K
      Physics and Chemistry of Minerals 24 (1997) 547-550
      Thermal expansion of periclase (MgO) and tungsten (W)
      to melting temperatures
      Sample: T = 1363 K
      _database_code_amcsd 0008073

      CELL PARAMETERS:    3.1804   3.1804   3.1804   90.000   90.000   90.000
      SPACE GROUP: Im3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     32.170
      Density (g/cm3):     18.976
      MAX. ABS. INTENSITY / VOLUME**2:      2236.749798    
      RIR:     38.380
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                40.10        100.00        2.2489    1   1   0        12
                58.00         15.81        1.5902    2   0   0         6
                72.85         29.66        1.2984    2   1   1        24
                86.57          8.90        1.1244    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.