Niobocarbide
      Becker K, Ebert F
      Zeitschrift fur Physik 31 (1925) 268-272
      Die Kristallstrukturen einiger binaerer Carbide und Nitride.
      _cod_database_code 1011323
      _database_code_amcsd 0018165

      CELL PARAMETERS:    4.4000   4.4000   4.4000   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     85.184
      Density (g/cm3):      8.180
      MAX. ABS. INTENSITY / VOLUME**2:      255.8862679    
      RIR:     10.186
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                35.33        100.00        2.5403    1   1   1         8
                41.03         74.78        2.2000    2   0   0         6
                59.41         42.83        1.5556    2   2   0        12
                71.06         31.88        1.3266    3   1   1        24
                74.74         12.93        1.2702    2   2   2         8
                88.99          5.87        1.1000    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.