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 = 455 K
      _database_code_amcsd 0008069

      CELL PARAMETERS:    3.1672   3.1672   3.1672   90.000   90.000   90.000
      SPACE GROUP: Im3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     31.771
      Density (g/cm3):     19.215
      MAX. ABS. INTENSITY / VOLUME**2:      2264.504000    
      RIR:     38.374
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                40.27        100.00        2.2395    1   1   0        12
                58.26         15.78        1.5836    2   0   0         6
                73.20         29.58        1.2930    2   1   1        24
                87.02          8.89        1.1198    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.