Natanite
      Diffraction data computed using the structure from the paper listed below, 
      along with the cell parameters refined from single crystal data of R100016 
      Strunz V H, Contag B
      Acta Crystallographica 13 (1960) 601-603
      Hexahydroxostannate Fe, Mn, Co, Mg, Ca[Sn(OH)6] und deren kristallstruktur
      Locality: synthetic

      CELL PARAMETERS:   7.8650  7.8650  7.8650   90.000   90.000   90.000
      ALTERNATE SETTING FOR SPACE GROUP: Pn3m      

           ATOM        X         Y         Z     OCCUPANCY  ISO(B)
            Fe     0.50000   0.50000   0.50000     1.000     0.700
            Sn     0.00000   0.00000   0.00000     1.000     1.000
            OH     0.05620   0.05620   0.24800     1.000     1.000

            X-RAY WAVELENGTH:     1.541838
            BOUNDS ON TWO THETA:    5.0  90.0
            LIMITS IMPOSED ON THE INDICES ARE:  +/-  7 +/-  7 +/-  7
            MAX. ABS. INTENSITY / VOLUME**2:      107.5054783    
            The INTENSITY cut off value is   1.00

               2-THETA      INTENSITY    D-SPACING   H   K   L
                15.94         10.76        5.5614    1   1   0
                19.55         17.02        4.5409    1   1   1
                22.61        100.00        3.9325    2   0   0
                27.78          1.23        3.2109    2   1   1
                32.19         43.09        2.7807    2   2   0
                36.11          2.17        2.4871    3   1   0
                37.94          8.52        2.3714    3   1   1
                39.70         10.96        2.2704    2   2   2
                46.17         16.16        1.9662    4   0   0
                50.59          3.50        1.8044    3   3   1
                52.00         36.28        1.7587    4   2   0
                54.74          2.64        1.6768    3   3   2
                57.40         22.90        1.6054    4   2   2
                59.97          1.12        1.5425    5   1   0
                61.24          2.00        1.5136    5   1   1
                67.35          6.46        1.3903    4   4   0
                70.89          2.41        1.3294    5   3   1
                72.05          1.19        1.3108    6   0   0
                72.05          9.83        1.3108    4   4   2
                76.62          6.29        1.2436    6   2   0
                81.11          6.62        1.1857    6   2   2
                85.55          1.82        1.1352    4   4   4
                89.95          3.82        1.0907    6   4   0
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.