Analcime
Diffraction data computed using the structure from the paper listed below, 
along with the cell parameters refined from the powder pattern of R040128
      Cruciani G, Gualtieri A
      American Mineralogist 84 (1999) 112-119
      Dehydration dynamics of analcime by in situ synchrotron powder diffraction
      Sample at T = 298 K

      CELL PARAMETERS:  13.7318 13.7318 13.7232   90.000   90.000   90.000
      ALTERNATE SETTING FOR SPACE GROUP: I4_1/acd  

           ATOM        X         Y         Z     OCCUPANCY  ISO(B)
            Si     0.12430   0.16090   0.41410     0.575     3.000
            Al     0.12430   0.16090   0.41410     0.425     3.000
            Si     0.16190   0.41190   0.12500     0.900     3.079
            Al     0.16190   0.41190   0.12500     0.100     3.079
            Na     0.13430   0.00000   0.25000     0.860     6.553
            Na     0.00000   0.25000   0.12500     0.230     6.553
            O      0.09900   0.37340   0.21880     1.000     1.895
            O      0.22190   0.11200   0.36270     1.000     4.343
            O      0.35820   0.21790   0.10520     1.000     3.000
            Wa     0.11650   0.13350   0.12500     1.000     5.448

            X-RAY WAVELENGTH:     1.541838
            BOUNDS ON TWO THETA:    5.0  90.0
            LIMITS IMPOSED ON THE INDICES ARE:  +/- 12 +/- 12 +/- 12
            MAX. ABS. INTENSITY / VOLUME**2:      10.14170640    
            The INTENSITY cut off value is   1.00

               2-THETA      INTENSITY    D-SPACING   H   K   L
                12.89          2.21        6.8659    2   0   0
                15.81         51.79        5.6054    2   1   1
                15.82         31.17        5.6036    1   1   2
                18.27          1.80        4.8549    2   2   0
                18.28         17.83        4.8534    2   0   2
                24.25          1.65        3.6698    3   2   1
                24.26          2.90        3.6685    2   1   3
                25.95        100.00        3.4330    4   0   0
                25.97         36.40        3.4308    0   0   4
                30.54         18.94        2.9273    3   3   2
                30.54         48.67        2.9269    3   2   3
                31.93          6.61        2.8027    4   2   2
                33.27          2.89        2.6930    4   3   1
                33.28         10.53        2.6924    4   1   3
                33.28          4.14        2.6920    3   1   4
                35.82          6.43        2.5070    5   2   1
                35.84          3.90        2.5058    2   1   5
                37.03          2.51        2.4275    4   4   0
                37.05          8.75        2.4267    4   0   4
                40.50          1.91        2.2276    6   1   1
                40.50          3.61        2.2273    5   2   3
                40.51          2.45        2.2267    3   2   5
                40.52          1.04        2.2263    1   1   6
                47.76          5.80        1.9043    6   4   0
                47.77          2.40        1.9039    6   0   4
                47.78          4.94        1.9034    4   0   6
                48.73          1.35        1.8686    7   2   1
                48.74          4.93        1.8685    6   3   3
                48.75          2.11        1.8679    3   3   6
                52.47          1.74        1.7439    6   5   1
                52.47          4.96        1.7439    7   3   2
                52.48          5.42        1.7438    7   2   3
                52.48          1.51        1.7435    6   1   5
                52.50          5.62        1.7431    3   2   7
                53.38          4.39        1.7165    8   0   0
                53.41          1.76        1.7154    0   0   8
                54.27          2.76        1.6903    7   4   1
                54.28          1.43        1.6900    7   1   4
                54.30          1.71        1.6895    4   1   7
                55.16          1.01        1.6652    8   0   2
                56.92          1.38        1.6178    6   0   6
                57.76          2.59        1.5962    8   1   3
                57.79          1.90        1.5954    3   1   8
                61.94          1.02        1.4982    8   4   2
                62.75          1.14        1.4807    9   2   1
                65.96          1.01        1.4163    9   3   2
                65.98          1.23        1.4159    6   3   7
                66.00          1.14        1.4156    3   2   9
                68.31          1.19        1.3732    8   6   0
                69.08          1.74        1.3596   10   1   1
                69.08          1.11        1.3596    7   7   2
                69.11          4.39        1.3592    7   2   7
                69.13          1.06        1.3588    1   1  10
                73.66          1.12        1.2861    8   7   1
                73.69          1.65        1.2856    7   1   8
                78.17          1.12        1.2227    5   1  10
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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.