Beryllium
      Larsen F K, Hansen N K
      Acta Crystallographica B40 (1984) 169-179
      Diffraction study of the electron density distribution in beryllium metal
      Locality: Synthetic
      _database_code_amcsd 0020596

      CELL PARAMETERS:    2.2853   2.2853   3.5842   90.000   90.000  120.000
      SPACE GROUP: P6_3/mmc  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     16.211
      Density (g/cm3):      1.846
      MAX. ABS. INTENSITY / VOLUME**2:      2.864355096    
      RIR:      0.505
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                45.85         26.26        1.9791    1   0   0         6
                50.96         24.93        1.7921    0   0   2         2
                52.84        100.00        1.7325    1   0   1        12
                70.95         13.57        1.3284    1   0   2        12
                84.86          5.63        1.1427    1   1   0         6
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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.