Portlandite
      Xu H, Zhao Y, Zhang J, Hickmott D D, Daemen L L
      Physics and Chemistry of Minerals 34 (2007) 223-232
      In situ neutron diffraction study of deuterated portlandite Ca(OD)2 at high
      pressure and temperature
      Sample: P = 2.08 GPa
      _database_code_amcsd 0009073

      CELL PARAMETERS:    3.5384   3.5384   4.7084   90.000   90.000  120.000
      SPACE GROUP: P-3m1     
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:     51.053
      Density (g/cm3):      2.410
      MAX. ABS. INTENSITY / VOLUME**2:      24.92456417    
      RIR:      3.368
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                18.85         55.61        4.7084    0   0   1         2
                29.14         16.56        3.0643    1   0   0         6
                34.94         97.56        2.5683    0   1   1         6
                34.94          2.44        2.5683    1   0   1         6
                48.78         18.01        1.8669    1   0   2         6
                48.78         19.30        1.8669    0   1   2         6
                51.67         25.76        1.7692    1   1   0         6
                55.48         11.77        1.6561    1   1   1        12
                58.84          1.25        1.5695    0   0   3         2
                60.42          1.52        1.5322    2   0   0         6
                63.89          8.89        1.4570    2   0   1         6
                66.99          7.38        1.3969    1   0   3         6
                73.79          3.09        1.2842    0   2   2         6
                73.79          3.45        1.2842    2   0   2         6
                81.83          1.15        1.1771    0   0   4         2
                82.09          1.89        1.1741    1   1   3        12
                86.54          1.67        1.1247    1   2   1        12
                89.36          2.34        1.0964    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.