Copper
      Wyckoff R W G
      Crystal Structures 1 (1963) 7-83
      Second edition. Interscience Publishers, New York, New York
      Cubic closest packed, ccp, structure
      _database_code_amcsd 0011145

      CELL PARAMETERS:    3.6150   3.6150   3.6150   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     47.240
      Density (g/cm3):      8.934
      MAX. ABS. INTENSITY / VOLUME**2:      311.0438961    
      RIR:     11.337
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                43.35        100.00        2.0871    1   1   1         8
                50.49         45.56        1.8075    2   0   0         6
                74.20         23.28        1.2781    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.