Lanthanum
      Wyckoff R W G
      Crystal Structures 1 (1963) 7-83
      Second edition. Interscience Publishers, New York, New York
      Double hexagonal closest packed, dhcp, structure
      _database_code_amcsd 0011203

      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):      6.164
      MAX. ABS. INTENSITY / VOLUME**2:      242.9618826    
      RIR:     12.835
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                27.32          7.92        3.2649    1   0   0         6
                28.30         43.19        3.1532    1   0   1        12
                29.38         34.66        3.0398    0   0   4         2
                31.09        100.00        2.8764    1   0   2        12
                35.30         23.14        2.5426    1   0   3        12
                40.55          5.06        2.2248    1   0   4        12
                46.57          9.69        1.9503    1   0   5        12
                48.28         22.89        1.8850    1   1   0         6
                53.20         18.44        1.7218    1   0   6        12
                56.91          4.84        1.6179    2   0   1        12
                57.53         24.84        1.6020    1   1   4        12
                58.55         13.13        1.5766    2   0   2        12
                60.36          3.92        1.5335    1   0   7        12
                60.96          3.36        1.5199    0   0   8         2
                61.21          3.73        1.5142    2   0   3        12
                64.83          1.01        1.4382    2   0   4        12
                69.33          2.38        1.3554    2   0   5        12
                74.66          5.49        1.2713    2   0   6        12
                76.28          1.70        1.2483    1   0   9        12
                77.80          1.06        1.2277    2   1   1        24
                79.21          3.00        1.2094    2   1   2        24
                80.79          1.41        1.1896    2   0   7        12
                81.32          7.34        1.1832    1   1   8        12
                85.15          3.58        1.1394    1   0  10        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.