Magnesium
      Jette E R, Foote F
      Journal of Chemical Physics 3 (1935) 605-616
      Precision determination of lattice constants
      Locality: synthetic
      Sample: at T = 25 C
      Note: lattice parameter is average of four samples
      _database_code_amcsd 0012939

      CELL PARAMETERS:    3.2030   3.2030   5.2002   90.000   90.000  120.000
      SPACE GROUP: P6_3/mmc  
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     46.202
      Density (g/cm3):      1.747
      MAX. ABS. INTENSITY / VOLUME**2:      20.69001458    
      RIR:      3.857
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                32.27         24.18        2.7739    1   0   0         6
                34.49         26.65        2.6001    0   0   2         2
                36.72        100.00        2.4475    1   0   1        12
                47.96         14.62        1.8970    1   0   2        12
                57.55         15.71        1.6015    1   1   0         6
                63.26         16.77        1.4700    1   0   3        12
                67.54          2.20        1.3869    2   0   0         6
                68.85         16.40        1.3636    1   1   2        12
                70.24         11.44        1.3401    2   0   1        12
                72.74          2.24        1.3001    0   0   4         2
                78.10          2.61        1.2237    2   0   2        12
                81.82          2.22        1.1772    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.