Ice Ih
      Bernal J, Fowler R
      Journal of Chemical Physics 1 (1933) 515-548
      A Theory of Water and Ionic Solution, with Particular Reference to
      Hydrogen and Hydroxyl Ions
      _cod_database_code 1011023
      _database_code_amcsd 0017930

      CELL PARAMETERS:    7.8200   7.8200   7.3600   90.000   90.000  120.000
      SPACE GROUP: P6_3cm    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    389.782
      Density (g/cm3):      0.921
      MAX. ABS. INTENSITY / VOLUME**2:      4.282599534    
      RIR:      1.514
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                22.74        100.00        3.9100    1   1   0         6
                24.18         55.64        3.6800    0   0   2         1
                25.80         59.46        3.4530    1   1   1         6
                33.44         27.47        2.6798    1   1   2         6
                39.94         53.08        2.2574    3   0   0         6
                43.55         46.85        2.0781    1   1   3         6
                46.45          5.82        1.9550    2   2   0         6
                47.24         24.10        1.9242    3   0   2         6
                48.16          6.00        1.8895    2   2   1         6
                53.04          2.78        1.7265    2   2   2         6
                60.56         10.98        1.5289    2   2   3         6
                62.89          4.01        1.4778    4   1   0        12
                64.29          3.12        1.4489    4   1   1        12
                68.06          6.61        1.3776    1   1   5         6
                68.41          2.54        1.3714    4   1   2        12
                72.53          3.72        1.3033    3   3   0         6
                75.03          8.01        1.2659    4   1   3        12
                77.73          2.50        1.2286    3   3   2         6
                81.93          2.88        1.1759    2   2   5         6
                86.16          1.94        1.1287    6   0   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.