Tamaite
      Hughes J M, Rakovan J F, Bracco R, Gunter M E
      American Mineralogist 88 (2003) 1324-1330
      The atomic arrangemetn of the ganophyllite-group modulated layer silicates as
      determined from the orthorhombic dimorph of tamaite, with the elusive 16.8 A
      ganophyllite-group superstructure revealed
      Note: signs of the y-coordinates for O24 and O25 have been changed
      _database_code_amcsd 0003154

      CELL PARAMETERS:   16.8146  25.2036  13.3866   90.000   90.000   90.000
      SPACE GROUP: Pnma      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   5673.086
      Density (g/cm3):      2.698
      MAX. ABS. INTENSITY / VOLUME**2:      58.52285809    
      RIR:      7.062
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 7.01        100.00       12.6018    0   2   0         2
                 7.48         17.22       11.8225    0   1   1         4
                 9.14          1.08        9.6712    1   1   1         8
                10.98          1.52        8.0545    1   2   1         8
                12.44          1.14        7.1159    0   3   1         4
                17.15          1.87        5.1700    3   0   1         4
                21.15          2.31        4.2006    0   6   0         2
                22.24          1.44        3.9968    3   4   1         8
                22.56          3.12        3.9408    0   3   3         4
                23.25          2.08        3.8258    3   3   2         8
                25.62          3.19        3.4769    0   7   1         4
                26.17          1.40        3.4049    1   7   1         8
                28.33          4.73        3.1504    0   8   0         2
                31.13          1.17        2.8734    3   0   4         4
                31.94          1.16        2.8021    0   7   3         4
                31.95          3.51        2.8015    3   2   4         8
                32.74          1.52        2.7356    6   2   0         4
                32.94          4.09        2.7188    3   3   4         8
                33.71          2.17        2.6584    6   3   0         4
                34.30          7.29        2.6144    3   4   4         8
                35.04          3.59        2.5606    6   4   0         4
                37.94          4.36        2.3716    3   6   4         8
                38.62          2.71        2.3312    6   6   0         4
                42.58          3.17        2.1230    3   8   4         8
                43.21          1.18        2.0939    6   8   0         4
                48.02          1.17        1.8948    3  10   4         8
                54.87          1.23        1.6733    0   0   8         2
                56.40          2.55        1.6313    9   0   4         4
                56.92          2.29        1.6178    9   2   4         8
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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.