Wermlandite
      Rius J, Allmann R
      Zeitschrift fur Kristallographie 168 (1984) 133-144
      The superstructure of the double layer mineral wermlandite
      [Mg7(Al0.57,Fe3+0.43)2(OH)18]2+[(Ca0.6,Mg0.4)(SO4)2(H2O)12]2-
      Locality: Langban, Warmland, Sweden
      _database_code_amcsd 0010871

      CELL PARAMETERS:    9.3030   9.3030  22.5700   90.000   90.000  120.000
      SPACE GROUP: P-3c1     
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   1691.641
      Density (g/cm3):      1.957
      MAX. ABS. INTENSITY / VOLUME**2:      9.964006029    
      RIR:      1.658
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 7.83        100.00       11.2850    0   0   2         2
                10.98          3.40        8.0566    1   0   0         6
                13.50         11.43        6.5571    0   1   2         6
                13.50          1.94        6.5571    1   0   2         6
                15.71         67.14        5.6425    0   0   4         2
                19.08         29.62        4.6515    1   1   0         6
                19.20          9.05        4.6217    0   1   4         6
                19.20          2.18        4.6217    1   0   4         6
                20.65         10.52        4.3005    1   1   2        12
                22.07          1.64        4.0283    2   0   0         6
                23.45          3.29        3.7939    0   2   2         6
                23.45          3.35        3.7939    2   0   2         6
                23.65         34.17        3.7617    0   0   6         2
                24.81         10.84        3.5892    1   1   4        12
                26.14          4.82        3.4085    0   1   6         6
                27.20          4.30        3.2785    0   2   4         6
                27.20          2.99        3.2785    2   0   4         6
                29.33          1.21        3.0451    2   1   0        12
                29.60          2.01        3.0178    1   2   1        12
                29.60          7.87        3.0178    2   1   1        12
                30.40          1.45        2.9400    2   1   2        12
                31.70          2.06        2.8227    1   2   3        12
                31.70          2.69        2.8227    2   1   3        12
                31.72          1.87        2.8212    0   0   8         2
                32.57          1.31        2.7493    2   0   6         6
                33.36          6.56        2.6855    3   0   0         6
                33.44          2.45        2.6798    2   1   4        12
                34.32          4.09        2.6126    0   3   2         6
                34.32         11.61        2.6126    3   0   2         6
                35.56          6.02        2.5244    1   2   5        12
                37.07          1.03        2.4249    0   3   4         6
                37.07         34.42        2.4249    3   0   4         6
                38.02          2.01        2.3668    1   2   6        12
                40.60          1.50        2.2220    2   2   3        12
                40.76          1.89        2.2139    1   2   7        12
                41.31         24.80        2.1857    3   0   6         6
                42.02          2.48        2.1503    2   2   4        12
                46.10          1.43        1.9690    0   2  10         6
                46.70          2.65        1.9452    0   3   8         6
                46.70         23.13        1.9452    3   0   8         6
                50.32          1.81        1.8132    2   1  10        12
                52.02          3.23        1.7581    4   1   0        12
                52.69          1.44        1.7371    1   4   2        12
                53.00          7.15        1.7278    3   0  10         6
                53.00          5.44        1.7278    0   3  10         6
                59.63          9.45        1.5505    3   3   0         6
                60.05          5.42        1.5406    0   3  12         6
                60.05          3.59        1.5406    3   0  12         6
                60.25          9.97        1.5361    3   3   2        12
                62.08          9.41        1.4951    3   3   4        12
                65.07          1.23        1.4335    3   3   6        12
                67.80          3.21        1.3822    0   3  14         6
                70.08          1.40        1.3428    6   0   0         6
                72.34          3.18        1.3063    0   6   4         6
                75.12          2.91        1.2646    0   6   6         6
                76.24          3.69        1.2488    0   3  16         6
                78.96          1.77        1.2124    0   6   8         6
                83.83          1.80        1.1540    0   6  10         6
                89.73          1.24        1.0928    6   0  12         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.