HfC
      Wyckoff R W G
      Crystal Structures 1 (1963) 85-237
      Second edition. Interscience Publishers, New York, New York
      rocksalt structure
      _database_code_amcsd 0011319

      CELL PARAMETERS:    4.4578   4.4578   4.4578   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     88.585
      Density (g/cm3):     14.282
      MAX. ABS. INTENSITY / VOLUME**2:      938.7400941    
      RIR:     21.402
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                34.86        100.00        2.5737    1   1   1         8
                40.47         61.83        2.2289    2   0   0         6
                58.57         36.34        1.5761    2   2   0        12
                70.00         31.50        1.3441    3   1   1        24
                73.61         10.71        1.2869    2   2   2         8
                87.54          4.60        1.1144    4   0   0         6
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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.