Copper
      Owen E A, Yates E L
      Philosophical Magazine 15 (1933) 472-488
      Precision measurements of crystal parameters
      Locality: synthetic
      Sample: at T = 18 C
      Note: lattice parameter is mean value of 2 radiation types
      _database_code_amcsd 0014944

      CELL PARAMETERS:    3.6077   3.6077   3.6077   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     46.956
      Density (g/cm3):      8.988
      MAX. ABS. INTENSITY / VOLUME**2:      312.7242530    
      RIR:     11.330
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                43.45        100.00        2.0829    1   1   1         8
                50.60         45.53        1.8039    2   0   0         6
                74.37         23.24        1.2755    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.