Erionite-K
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from single crystal data of R061104
      Staples L W, Gard J A
      Mineralogical Magazine 32 (1959) 261-281
      The fibrous zeolite erionite; its occurrence, unit cell, and structure
      Note: K atom was not located
      Locality: Durkee opal mine, Swayze Creek, Baker County, Oregon, USA

      CELL PARAMETERS:  13.2460 13.2460 15.1060   90.000   90.000  120.000
      SPACE GROUP: P6_3/mmc  

           ATOM        X         Y         Z     OCCUPANCY  ISO(B)
            Al     0.00000   0.23700   0.10600     0.250     0.600
            Si     0.00000   0.23700   0.10600     0.750     0.500
            Al     0.08800   0.42100   0.25000     0.250     0.600
            Si     0.08800   0.42100   0.25000     0.750     0.500
            O      0.01700   0.35000   0.16200     1.000     1.000
            O      0.10600   0.21200   0.12800     1.000     1.000
            O      0.12300   0.24600  -0.13300     1.000     1.000
            O      0.00000   0.26200   0.00000     1.000     1.000
            O      0.21700   0.43400   0.25000     1.000     1.000
            O      0.45000   0.90000   0.25000     1.000     1.000

            X-RAY WAVELENGTH:     1.541838
            BOUNDS ON TWO THETA:    0.0  90.0
            LIMITS IMPOSED ON THE INDICES ARE:  +/- 10 +/- 10 +/- 13
            MAX. ABS. INTENSITY / VOLUME**2:      18.83623400    
            The INTENSITY cut off value is   1.00

               2-THETA      INTENSITY    D-SPACING   H   K   L
                 7.71        100.00       11.4714    1   0   0
                 9.68         30.99        9.1357    1   0   1
                11.72         11.73        7.5530    0   0   2
                13.37         60.92        6.6230    1   1   0
                14.04         15.46        6.3084    1   0   2
                15.45          9.22        5.7357    2   0   0
                16.53          4.76        5.3622    2   0   1
                17.81          1.36        4.9797    1   1   2
                19.25          5.61        4.6107    1   0   3
                19.43          5.66        4.5679    2   0   2
                20.48         15.07        4.3358    2   1   0
                21.32          7.77        4.1675    2   1   1
                23.26          6.95        3.8238    3   0   0
                23.51          1.88        3.7840    2   0   3
                23.56          3.47        3.7765    0   0   4
                23.66          7.16        3.7603    2   1   2
                24.82         17.92        3.5871    1   0   4
                26.92          8.51        3.3115    2   2   0
                27.14          3.08        3.2856    2   1   3
                28.29          4.07        3.1542    2   0   4
                30.49          2.36        2.9321    3   1   2
                30.60          1.34        2.9216    1   0   5
                31.19          4.91        2.8678    4   0   0
                31.41         11.91        2.8477    2   1   4
                31.76          5.19        2.8175    4   0   1
                33.42          7.94        2.6811    4   0   2
                35.87          2.27        2.5033    4   1   0
                39.45          2.40        2.2839    4   0   4
                40.88          1.30        2.2077    3   3   0
                42.67          1.49        2.1190    3   3   2
                43.01          1.48        2.1028    3   0   6
                48.19          2.83        1.8882    0   0   8
                49.63          3.53        1.8369    5   2   0
                51.48          3.52        1.7751    4   1   6
                52.30          1.01        1.7494    6   1   0
                55.35          1.57        1.6599    3   3   6
                55.50          2.62        1.6558    4   4   0
                58.11          2.10        1.5873    6   1   4
                60.84          1.13        1.5226    6   0   6
                61.51          1.30        1.5075    4   1   8
                67.73          1.58        1.3834    4   4   6
                68.55          1.09        1.3689    5   4   4
                70.21          1.97        1.3405    8   0   4
                70.45          2.60        1.3365    4   0  10
                74.43          1.78        1.2746    9   0   0
                75.09          1.52        1.2651    8   1   4
                76.52          1.44        1.2449    4   4   8
                78.28          1.17        1.2213    7   3   4
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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.