Montesommaite
      Rouse R C, Dunn P J, Grice J D, Schlenker J L, Higgins J B
      American Mineralogist 75 (1990) 1415-1420
      Montesommaite, (K,Na)9Al9Si23O64.10H2O, a new zeolite related to merlinoite and
      the gismondine group

      CELL PARAMETERS:   7.1410  7.1410 17.3070   90.000   90.000   90.000
      ALTERNATE SETTING FOR SPACE GROUP: I4_1/amd  
      X-RAY WAVELENGTH:     1.541838
      MAX. ABS. INTENSITY / VOLUME**2:      18.96562632    
               2-THETA      INTENSITY    D-SPACING   H   K   L
                13.41         61.36        6.6012    1   0   1
                19.78         17.92        4.4876    1   0   3
                20.36          5.97        4.3613    1   1   2
                20.53         39.82        4.3267    0   0   4
                24.94          4.65        3.5705    2   0   0
                27.01        100.00        3.3006    2   0   2
                28.42         24.70        3.1405    2   1   1
                28.66         48.75        3.1148    1   0   5
                32.03         29.41        2.7940    2   1   3
                32.51          5.39        2.7539    2   0   4
                35.56          9.78        2.5247    2   2   0
                38.16          2.96        2.3581    3   0   1
                38.35         22.22        2.3472    2   1   5
                38.53          2.80        2.3364    1   0   7
                41.32          4.59        2.1850    3   1   2
                41.41         21.28        2.1806    2   2   4
                41.75         15.01        2.1634    0   0   8
                45.30          2.50        2.0019    3   1   4
                46.13          3.36        1.9677    3   2   1
                48.60          3.73        1.8732    3   2   3
                49.06          2.09        1.8569    1   0   9
                49.25          2.01        1.8502    2   0   8
                51.17         14.27        1.7852    4   0   0
                51.39          3.86        1.7781    3   1   6
                53.43          6.46        1.7148    3   0   7
                55.63          8.96        1.6522    3   3   2
                58.81         11.95        1.5703    4   2   2
                59.14          1.75        1.5622    3   1   8
                59.34         11.39        1.5574    2   0  10
                59.70          2.26        1.5489    4   1   5
                59.83         10.11        1.5458    3   2   7
                62.04          2.38        1.4959    3   0   9
                64.05          1.95        1.4538    3   3   6
                65.84          1.87        1.4185    4   1   7
                67.57          1.39        1.3863    4   3   3
                68.09          1.58        1.3769    4   0   8
                68.28          2.36        1.3737    3   1  10
                71.33          3.85        1.3222    5   2   1
                71.45          4.34        1.3202    5   0   5
                71.94          2.18        1.3125    3   0  11
                73.24          5.60        1.2923    5   2   3
                75.28          2.68        1.2624    4   4   0
                75.99          7.99        1.2523    2   2  12
                77.01          2.38        1.2383    5   2   5
                77.48          1.32        1.2319    3   2  11
                78.95          2.87        1.2126    5   3   2
                80.74          1.32        1.1902    6   0   0
                81.66          1.46        1.1791    6   0   2
                81.72          1.28        1.1784    5   3   4
                82.13          5.55        1.1736    4   2  10
                84.41          1.63        1.1475    6   0   4
                84.50          1.56        1.1466    5   0   9
                86.12          2.59        1.1291    6   2   0
                86.29          1.77        1.1273    5   3   6
                86.81          2.51        1.1219    4   0  12
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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.