Portlandite
      Busing W, Levy H
      Journal of Chemical Physics 26 (1957) 563-568
      Neutron diffraction study of calcium hydroxide
      _cod_database_code 1000045
      _database_code_amcsd 0012953

      CELL PARAMETERS:    3.5862   3.5862   4.8801   90.000   90.000  120.000
      SPACE GROUP: P-3m1     
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     54.354
      Density (g/cm3):      2.263
      MAX. ABS. INTENSITY / VOLUME**2:      23.93587174    
      RIR:      3.444
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.18         62.83        4.8801    0   0   1         2
                28.74         16.80        3.1057    1   0   0         6
                34.22          2.51        2.6201    1   0   1         6
                34.22         97.49        2.6201    0   1   1         6
                47.38         17.98        1.9187    1   0   2         6
                47.38         23.40        1.9187    0   1   2         6
                50.93         27.54        1.7931    1   1   0         6
                54.52         14.21        1.6831    1   1   1        12
                56.58          1.20        1.6267    0   0   3         2
                59.53          1.89        1.5529    2   0   0         6
                62.80          9.83        1.4798    2   0   1         6
                64.69          1.09        1.4410    0   1   3         6
                64.69          9.27        1.4410    1   0   3         6
                72.10          4.46        1.3101    2   0   2         6
                72.10          3.40        1.3101    0   2   2         6
                78.38          1.40        1.2200    0   0   4         2
                79.57          2.06        1.2048    1   1   3        12
                84.98          1.99        1.1413    1   2   1        12
                85.51          1.09        1.1356    1   0   4         6
                86.68          3.03        1.1232    0   2   3         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.