Polybasite
      Bindi L, Menchetti S
      American Mineralogist 94 (2009) 151-155
      Adding further complexity to the polybasite structure: The role of Ag in the
      B layer of the -M2a2b2c polytype
      Locality: Gowganda, Timiskaming District, Ontario, Canada
      _database_code_amcsd 0004814

      CELL PARAMETERS:   26.2625  15.1623  24.1061   90.000   90.045   90.000
      SPACE GROUP: C2/c      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   9599.044
      Density (g/cm3):      6.352
      MAX. ABS. INTENSITY / VOLUME**2:      36.36968471    
      RIR:      1.864
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 7.33         24.91       12.0530    0   0   2         2
                13.49          5.02        6.5656    4   0   0         2
                13.49          9.24        6.5655    2   2   0         4
                13.79          1.12        6.4193   -3   1   2         4
                14.70         11.22        6.0265    0   0   4         2
                15.36          1.02        5.7676   -4   0   2         2
                15.37          1.86        5.7666   -2   2   2         4
                15.37          1.17        5.7647    2   2   2         4
                17.87          1.13        4.9631    4   2   0         4
                19.34          2.33        4.5905   -5   1   2         4
                19.34          2.54        4.5890    1   3   2         4
                20.00          1.71        4.4406   -2   2   4         4
                22.13          1.99        4.0177    0   0   6         2
                24.44          3.06        3.6419    7   1   0         4
                24.44          3.11        3.6419    5   3   0         4
                24.61          1.39        3.6167   -6   2   2         4
                24.62          1.41        3.6160    0   4   2         4
                24.72          2.09        3.6013   -5   3   1         4
                24.73          1.06        3.6007    7   1   1         4
                25.55          1.48        3.4864   -2   4   2         4
                26.00          1.00        3.4276   -2   2   6         4
                26.01          2.42        3.4264    2   2   6         4
                26.87          1.53        3.3178   -5   3   3         4
                26.88          1.42        3.3168    2   4   3         4
                26.89          1.70        3.3162    7   1   3         4
                27.16          2.90        3.2828    8   0   0         2
                27.16          7.43        3.2828    4   4   0         4
                27.80          6.73        3.2097   -6   2   4         4
                27.80          7.10        3.2086    0   4   4         4
                27.81          7.20        3.2077    6   2   4         4
                28.17          9.19        3.1681   -8   0   2         2
                28.17         57.61        3.1677   -4   4   2         4
                28.18         15.69        3.1671    4   4   2         4
                28.18         29.01        3.1668    8   0   2         2
                28.63          1.81        3.1180   -7   1   4         4
                28.65          1.35        3.1162    5   3   4         4
                29.65        100.00        3.0133    0   0   8         2
                29.89          1.09        2.9895   -7   3   1         4
                29.89          5.64        2.9890    8   2   1         4
                30.43          1.26        2.9374   -2   0   8         2
                30.58         12.89        2.9230   -7   3   2         4
                30.59         13.75        2.9226   -1   5   2         4
                30.59          3.16        2.9225    1   5   2         4
                30.59          5.02        2.9222    7   3   2         4
                31.01          6.20        2.8838   -8   0   4         2
                31.02         44.71        2.8833   -4   4   4         4
                31.03         12.61        2.8823    4   4   4         4
                31.03         23.88        2.8819    8   0   4         2
                31.21          4.17        2.8655    9   1   0         4
                31.21          4.04        2.8654    3   5   0         4
                31.44          2.53        2.8456   -6   4   1         4
                31.71          7.19        2.8215   -8   2   3         4
                31.73         10.52        2.8201    8   2   3         4
                32.11          3.84        2.7879   -3   5   2         4
                32.11          1.44        2.7876    3   5   2         4
                32.11          4.54        2.7873    9   1   2         4
                32.69          3.42        2.7390   -2   2   8         4
                32.70          1.00        2.7382    2   2   8         4
                32.71          1.41        2.7378    4   0   8         2
                33.19          2.85        2.6994   -6   4   3         4
                33.20          1.60        2.6985    6   4   3         4
                33.20          1.06        2.6983    9   1   3         4
                33.21          1.17        2.6980    2   4   6         4
                33.24         11.81        2.6953   -7   3   4         4
                33.25         10.97        2.6947   -1   5   4         4
                33.25         12.26        2.6945    1   5   4         4
                33.26         12.33        2.6939    7   3   4         4
                34.65          1.59        2.5886   -9   1   4         4
                34.66          2.10        2.5881   -3   5   4         4
                34.67          2.21        2.5875    3   5   4         4
                34.67          1.04        2.5873    6   4   4         4
                34.67          1.36        2.5871    9   1   4         4
                34.84          1.16        2.5749    5   1   8         4
                35.11          8.25        2.5556   -8   2   5         4
                35.14          5.50        2.5540    8   2   5         4
                35.29         10.56        2.5431   -8   0   6         2
                35.30         28.43        2.5426   -4   4   6         4
                35.31         24.06        2.5416    4   4   6         4
                35.32         14.97        2.5411    8   0   6         2
                35.52          5.02        2.5271    9   3   0         4
                35.52          1.37        2.5271    0   6   0         2
                35.73          1.55        2.5133    0   6   1         4
                35.73          1.08        2.5131    9   3   1         4
                36.32          2.06        2.4737   -9   3   2         4
                36.33          2.24        2.4730    9   3   2         4
                36.46          1.17        2.4641   -9   1   5         4
                36.47          1.81        2.4638   -6   4   5         4
                36.49          2.92        2.4627    6   4   5         4
                36.98          1.74        2.4309  -10   2   2         4
                36.98         12.03        2.4309   -8   4   2         4
                36.98         13.05        2.4306   -2   6   2         4
                36.99          1.19        2.4305    2   6   2         4
                36.99          1.28        2.4303    8   4   2         4
                36.99         12.86        2.4302   10   2   2         4
                37.31          9.30        2.4101    1   5   6         4
                37.32          7.48        2.4095    7   3   6         4
                38.14          5.02        2.3596   -6   2   8         4
                38.15          7.27        2.3588    0   4   8         4
                38.17          6.44        2.3580    6   2   8         4
                38.58          5.70        2.3338   -9   1   6         4
                38.60          5.06        2.3326    3   5   6         4
                38.78          1.06        2.3222   -5   3   8         4
                38.80          1.35        2.3210    5   3   8         4
                38.80          1.04        2.3208    7   1   8         4
                39.21          1.55        2.2977   -3   1  10         4
                39.22          1.63        2.2968    3   1  10         4
                39.74          3.57        2.2682   -8   2   7         4
                39.83          1.35        2.2635   -4   0  10         2
                39.83          1.06        2.2632   -2   2  10         4
                39.84          3.09        2.2626    2   2  10         4
                40.63         10.58        2.2208   -8   0   8         2
                40.63          8.58        2.2203   -4   4   8         4
                40.65         21.30        2.2194    4   4   8         4
                40.66          3.46        2.2190    8   0   8         2
                40.98          1.47        2.2021    6   4   7         4
                41.25          1.95        2.1885    6   6   0         4
                41.64          1.30        2.1690   -5   1  10         4
                41.65          1.97        2.1682    1   3  10         4
                41.86          1.11        2.1583   -5   3   9         4
                41.95          1.72        2.1534   -6   6   2         4
                42.02          1.31        2.1500   10   4   1         4
                42.42          1.67        2.1311   -7   3   8         4
                42.43          1.66        2.1303    1   5   8         4
                42.44          1.60        2.1298    7   3   8         4
                42.54          2.73        2.1252  -11   3   2         4
                42.55          2.94        2.1249    1   7   2         4
                42.82          2.05        2.1120  -10   2   6         4
                42.84          2.80        2.1111    2   6   6         4
                42.84          2.05        2.1107    8   4   6         4
                43.57          1.34        2.0773   -9   1   8         4
                43.59          1.22        2.0762    3   5   8         4
                43.60          1.50        2.0757    9   1   8         4
                44.01          3.26        2.0576  -12   0   4         2
                44.03          7.49        2.0568    6   6   4         4
                44.53          7.67        2.0348   -6   2  10         4
                44.54          6.73        2.0341    0   4  10         4
                44.56          6.18        2.0335    6   2  10         4
                45.13          1.02        2.0088    0   0  12         2
                45.69          1.57        1.9856   -9   5   4         4
                45.70          1.30        1.9854   -3   7   4         4
                46.74          6.46        1.9434   -4   4  10         4
                46.77          3.75        1.9423    8   0  10         2
                47.31          1.56        1.9216    6   6   6         4
                47.32          2.38        1.9211   -2   2  12         4
                47.33          1.75        1.9205    4   0  12         2
                47.45          1.10        1.9161   -8   4   8         4
                47.46          2.25        1.9157   -2   6   8         4
                47.48          1.67        1.9149   10   2   8         4
                47.83          1.20        1.9017   -1   7   6         4
                47.85          1.44        1.9011   11   3   6         4
                48.00         27.09        1.8953   12   4   0         4
                48.00         15.16        1.8953    0   8   0         2
                48.34          1.29        1.8828   -7   3  10         4
                48.36          1.21        1.8823   -1   5  10         4
                48.62          2.36        1.8725  -12   4   2         4
                48.63          2.50        1.8723    0   8   2         4
                48.63          2.73        1.8721   12   4   2         4
                49.43          1.37        1.8440    9   1  10         4
                50.70          1.21        1.8007  -10   6   2         4
                51.63          1.00        1.7704    6   6   8         4
                52.48          1.24        1.7435  -14   2   4         4
                52.50          1.11        1.7430    4   8   4         4
                52.94          1.25        1.7296   -8   4  10         4
                52.98          1.22        1.7285   10   2  10         4
                53.21          1.66        1.7215   -9   7   2         4
                53.22          1.71        1.7213   15   1   2         4
                53.44          3.11        1.7146  -12   4   6         4
                53.45          3.07        1.7141    0   8   6         4
                53.47          6.81        1.7138   -4   4  12         4
                53.47          3.32        1.7137   12   4   6         4
                53.50          3.46        1.7129    8   0  12         2
                54.92          1.41        1.6718   -7   3  12         4
                54.93          1.19        1.6714   -1   5  12         4
                54.94          1.33        1.6712    1   5  12         4
                54.95          1.13        1.6708    7   3  12         4
                55.15          1.20        1.6654    2   2  14         4
                56.58          1.74        1.6266  -16   0   2         2
                56.59          1.16        1.6265   -8   8   2         4
                56.59          2.52        1.6263    8   8   2         4
                56.83          1.17        1.6200    6   6  10         4
                57.42          2.70        1.6048  -12   4   8         4
                57.44          2.92        1.6043    0   8   8         4
                57.46          2.50        1.6039   12   4   8         4
                57.75          1.12        1.5964   -9   7   6         4
                58.25          1.47        1.5840  -16   0   4         2
                58.27          3.99        1.5835    8   8   4         4
                60.72          2.34        1.5253   -8   0  14         2
                60.73          2.12        1.5251   -4   4  14         4
                60.75          5.35        1.5246    4   4  14         4
                60.76          1.13        1.5244    8   0  14         2
                60.96          1.09        1.5199  -16   0   6         2
                60.97          1.15        1.5197   -8   8   6         4
                60.99          3.12        1.5193    8   8   6         4
                61.55          2.90        1.5066    0   0  16         2
                62.30          1.19        1.4904  -12   4  10         4
                62.32          1.21        1.4899    0   8  10         4
                62.34          1.54        1.4895   12   4  10         4
                64.65          3.08        1.4416   -8   8   8         4
                64.68          1.47        1.4412    8   8   8         4
                64.69          1.57        1.4409   16   0   8         2
                68.54          1.16        1.3691    4   4  16         4
                74.69          1.69        1.2708    8   8  12         4
                77.30          1.08        1.2343  -16   8   2         4
                77.31          1.07        1.2343   -4  12   2         4
                79.52          1.05        1.2053    0   0  20         2
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.