Posnjakite
      Mellini M, Merlino S
      Zeitschrift fur Kristallographie 149 (1979) 249-257
      Posnjakite: [Cu4(OH)6(H2O)O] octahedral sheets in its structure
      Locality: Fowey Consols, England
      _database_code_amcsd 0010806

      CELL PARAMETERS:   10.5780   6.3450   7.8630   90.000  117.980   90.000
      SPACE GROUP: Pa        
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    466.057
      Density (g/cm3):      3.344
      MAX. ABS. INTENSITY / VOLUME**2:      65.87566233    
      RIR:      6.415
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                12.75        100.00        6.9439    0   0   1         1
                16.89          5.28        5.2487    1   1   0         2
                17.20          2.50        5.1540   -2   0   1         1
                18.31          3.90        4.8466   -1   1   1         2
                19.00          1.44        4.6708    2   0   0         1
                25.66         24.73        3.4720    0   0   2         1
                26.79          4.24        3.3273   -1   1   2         2
                27.57          1.78        3.2358    2   0   1         1
                33.16         20.28        2.7017   -2   2   1         2
                34.17          4.24        2.6244    2   2   0         2
                34.29         10.13        2.6151   -4   0   1         1
                34.81          1.64        2.5770   -4   0   2         1
                37.10         23.44        2.4233   -2   2   2         2
                38.55         11.29        2.3354    4   0   0         1
                38.91          2.18        2.3146    0   0   3         1
                39.79          7.91        2.2653    2   2   1         2
                39.96          3.98        2.2564   -4   0   3         1
                44.87         14.00        2.0201   -2   2   3         2
                46.48          6.01        1.9538    4   0   1         1
                48.49          2.21        1.8774   -4   0   4         1
                48.70          4.32        1.8699    2   2   2         2
                52.73          1.57        1.7360    0   0   4         1
                55.21          5.49        1.6637   -2   2   4         2
                56.91          2.94        1.6179    4   0   2         1
                58.16          3.26        1.5862    0   4   0         2
                59.36          2.17        1.5570   -4   0   5         1
                59.80          3.37        1.5464    0   4   1         2
                59.84          4.02        1.5455    2   2   3         2
                60.05          6.57        1.5407   -6   2   2         2
                61.37          3.67        1.5107   -6   2   3         2
                61.96          3.29        1.4976   -6   2   1         2
                64.60          2.24        1.4428    0   4   2         2
                65.81          1.94        1.4191   -6   2   4         2
                66.95          1.97        1.3977    6   2   0         2
                67.48          1.65        1.3881   -2   2   5         2
                69.28          1.77        1.3562   -4   4   1         2
                71.96          2.02        1.3122    4   4   0         2
                72.82          1.83        1.2989    2   2   4         2
                72.89          1.02        1.2977   -4   4   3         2
                73.50          1.19        1.2885   -8   0   4         1
                77.51          1.60        1.2315    4   4   1         2
                85.78          1.12        1.1327    4   4   2         2
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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.