Praseodymium
      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 0011156

      CELL PARAMETERS:    5.1610   5.1610   5.1610   90.000   90.000   90.000
      SPACE GROUP: Fm3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    137.468
      Density (g/cm3):      6.807
      MAX. ABS. INTENSITY / VOLUME**2:      417.3140298    
      RIR:     19.961
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                29.99        100.00        2.9797    1   1   1         8
                34.76         49.36        2.5805    2   0   0         6
                49.98         31.13        1.8247    2   2   0        12
                59.39         33.81        1.5561    3   1   1        24
                62.32          9.46        1.4899    2   2   2         8
                73.38          3.93        1.2902    4   0   0         6
                81.25         11.13        1.1840    3   3   1        24
                83.83         10.08        1.1540    4   2   0        24
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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.