Lithium
      Barrett C S
      Acta Crystallographica 9 (1956) 671-677
      X-ray study of the alkali metals at low temperatures
      Locality: synthetic
      Sample: at T = 78 K
      Note: lattice parameters are average of 4 values
      _database_code_amcsd 0009185

      CELL PARAMETERS:    3.1110   3.1110   5.0930   90.000   90.000  120.000
      SPACE GROUP: P6_3/mmc  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     42.688
      Density (g/cm3):      0.540
      MAX. ABS. INTENSITY / VOLUME**2:     0.8736901663    
      RIR:      0.527
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                33.25         24.15        2.6942    1   0   0         6
                35.24         27.22        2.5465    0   0   2         2
                37.77        100.00        2.3815    1   0   1        12
                49.24         14.69        1.8507    1   0   2        12
                59.42         15.44        1.5555    1   1   0         6
                64.92         16.81        1.4363    1   0   3        12
                69.82          2.15        1.3471    2   0   0         6
                71.01         16.13        1.3274    1   1   2        12
                72.59         11.16        1.3023    2   0   1        12
                74.53          2.25        1.2732    0   0   4         2
                80.69          2.55        1.1908    2   0   2        12
                84.09          2.21        1.1512    1   0   4        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.