Portlandite
      Wyckoff R W G
      Crystal Structures 1 (1963) 239-444
      Second edition. Interscience Publishers, New York, New York
      Note: cadmium iodide structure
      _database_code_amcsd 0011777

      CELL PARAMETERS:    3.5844   3.5844   4.8962   90.000   90.000  120.000
      SPACE GROUP: P-3m1     
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     54.478
      Density (g/cm3):      2.197
      MAX. ABS. INTENSITY / VOLUME**2:      22.14971240    
      RIR:      3.283
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.12         81.37        4.8962    0   0   1         2
                28.76         20.74        3.1042    1   0   0         6
                34.20          2.54        2.6217    1   0   1         6
                34.20         97.46        2.6217    0   1   1         6
                47.29         18.46        1.9222    1   0   2         6
                47.29         27.63        1.9222    0   1   2         6
                50.95         27.97        1.7922    1   1   0         6
                54.52         16.73        1.6830    1   1   1        12
                56.37          1.27        1.6321    0   0   3         2
                59.56          2.16        1.5521    2   0   0         6
                62.81         10.11        1.4795    2   0   1         6
                64.51         10.47        1.4446    1   0   3         6
                64.51          1.11        1.4446    0   1   3         6
                72.05          5.10        1.3108    2   0   2         6
                72.05          3.52        1.3108    0   2   2         6
                78.07          1.53        1.2241    0   0   4         2
                79.41          2.16        1.2067    1   1   3        12
                85.01          2.07        1.1410    1   2   1        12
                85.22          1.19        1.1387    1   0   4         6
                86.54          3.36        1.1247    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.