Lanthanum
      Spedding F H, Daane A H, Herrmann K W
      Acta Crystallographica 9 (1956) 559-563
      The crystal structures and lattice parameters of high-purity scandium,
      yttrium and the rare earth metals
      Locality: synthetic
      Note: sample 99.8% pure
      _database_code_amcsd 0009168

      CELL PARAMETERS:    3.7700   3.7700  12.1590   90.000   90.000  120.000
      SPACE GROUP: P6_3/mmc  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    149.662
      Density (g/cm3):      3.082
      MAX. ABS. INTENSITY / VOLUME**2:      120.4465557    
      RIR:     12.725
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                14.57        100.00        6.0795    0   0   2         2
                27.32         15.98        3.2649    1   0   0         6
                28.30         87.11        3.1532    1   0   1        12
                29.38         17.48        3.0398    0   0   4         2
                31.09         22.41        2.8764    1   0   2        12
                35.30         46.67        2.5426    1   0   3        12
                40.55         10.20        2.2248    1   0   4        12
                44.72          4.97        2.0265    0   0   6         2
                46.57         19.55        1.9503    1   0   5        12
                48.28         11.54        1.8850    1   1   0         6
                50.70         19.53        1.8004    1   1   2        12
                53.20          4.13        1.7218    1   0   6        12
                56.36          1.69        1.6325    2   0   0         6
                56.91          9.77        1.6179    2   0   1        12
                57.53         12.53        1.6020    1   1   4        12
                58.55          2.94        1.5766    2   0   2        12
                60.36          7.91        1.5335    1   0   7        12
                60.96          1.70        1.5199    0   0   8         2
                61.21          7.52        1.5142    2   0   3        12
                64.83          2.04        1.4382    2   0   4        12
                67.91          6.89        1.3802    1   1   6        12
                68.04          1.71        1.3779    1   0   8        12
                69.33          4.80        1.3554    2   0   5        12
                74.66          1.23        1.2713    2   0   6        12
                76.28          3.43        1.2483    1   0   9        12
                77.80          2.14        1.2277    2   1   1        24
                80.79          2.84        1.1896    2   0   7        12
                81.32          3.70        1.1832    1   1   8        12
                81.54          1.84        1.1805    2   1   3        24
                88.94          1.42        1.1004    2   1   5        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.