Monteregianite-(Y)
      Ghose S, Sen Gupta P K, Campana C F
      American Mineralogist 72 (1987) 365-374
      Symmetry and crystal structure of monteregianite, Na4K2Y2Si16O38.10H2O, a
      double-sheet silicate with zeolitic properties
      Note: Several bond lengths cannot be reproduced with this data, but the authors
      no longer have the original data, so they cannot check
      _database_code_amcsd 0001072

      CELL PARAMETERS:    9.5120  23.9560   9.6170   90.000   93.850   90.000
      SPACE GROUP: P2_1/n    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   2186.475
      Density (g/cm3):      2.294
      MAX. ABS. INTENSITY / VOLUME**2:      7.689093844    
      RIR:      1.092
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 7.38         63.57       11.9780    0   2   0         2
                 9.93          2.99        8.9074    0   1   1         4
                10.02          3.34        8.8234    1   1   0         4
                12.67        100.00        6.9862   -1   0   1         2
                13.56         40.82        6.5318    1   0   1         2
                14.05         41.49        6.3018    1   1   1         4
                14.43          1.54        6.1379    0   3   1         4
                14.50          1.62        6.1102    1   3   0         4
                14.68         11.41        6.0347   -1   2   1         4
                14.79         18.94        5.9890    0   4   0         2
                17.54         14.49        5.0559    1   3   1         4
                18.49          7.41        4.7976    0   0   2         2
                18.70          6.28        4.7453    2   0   0         2
                18.86         16.72        4.7042    0   1   2         4
                19.07         19.20        4.6548    2   1   0         4
                19.94          1.41        4.4537    0   2   2         4
                20.12         43.70        4.4143    1   4   1         4
                20.13          2.77        4.4117    2   2   0         4
                21.61          4.18        4.1125    0   3   2         4
                22.27          1.33        3.9927    0   6   0         2
                23.02          2.85        3.8633    1   5   1         4
                23.76         15.64        3.7444    0   4   2         4
                23.93         17.54        3.7193    2   4   0         4
                25.50          4.46        3.4931   -2   0   2         2
                25.70         21.77        3.4665   -1   6   1         4
                26.16         26.92        3.4066    1   6   1         4
                26.29          1.23        3.3902    0   5   2         4
                27.31          1.68        3.2659    2   0   2         2
                27.56         12.25        3.2360    2   1   2         4
                27.67          1.19        3.2234    0   7   1         4
                27.71          1.29        3.2194    1   7   0         4
                28.85          5.75        3.0945   -1   0   3         2
                29.10         15.64        3.0690   -1   1   3         4
                29.10         23.24        3.0689    0   6   2         4
                29.12          4.56        3.0663   -3   0   1         2
                29.23         21.04        3.0551    2   6   0         4
                29.37         15.17        3.0415   -3   1   1         4
                29.47         16.84        3.0314    1   7   1         4
                29.55          7.28        3.0229    2   3   2         4
                29.61         19.53        3.0174   -2   4   2         4
                29.84         12.40        2.9945    0   8   0         2
                30.08         13.07        2.9712    1   0   3         2
                30.34         13.72        2.9462    3   0   1         2
                30.99         25.17        2.8854   -1   3   3         4
                31.19         23.35        2.8673    2   4   2         4
                31.25         24.15        2.8625   -3   3   1         4
                32.13          3.76        2.7861    0   7   2         4
                32.14          4.90        2.7847    1   3   3         4
                32.25          3.31        2.7757    2   7   0         4
                32.39          1.50        2.7641    3   3   1         4
                32.57         17.02        2.7492   -1   4   3         4
                32.81         20.13        2.7294   -3   4   1         4
                32.90          2.06        2.7221    1   8   1         4
                33.20          2.08        2.6986    2   5   2         4
                34.10          6.32        2.6290   -2   6   2         4
                35.45          1.39        2.5324    2   8   0         4
                35.51          8.79        2.5279    2   6   2         4
                35.78          2.02        2.5097    3   5   1         4
                36.45          1.66        2.4650    1   9   1         4
                36.74          4.42        2.4459   -1   6   3         4
                36.96          4.62        2.4319   -3   6   1         4
                37.74          1.62        2.3836    1   6   3         4
                37.92          1.94        2.3726    4   0   0         2
                37.95          2.07        2.3706    3   6   1         4
                38.27          1.04        2.3521    0   2   4         4
                38.66          1.38        2.3287   -3   0   3         2
                38.79          1.06        2.3215    2   9   0         4
                39.42          2.10        2.2859   -3   2   3         4
                39.78          4.05        2.2661   -1  10   1         4
                40.89          2.34        2.2072    2   8   2         4
                41.18          2.35        2.1919   -2   1   4         4
                41.48          2.34        2.1768   -4   1   2         4
                41.99          7.66        2.1519   -1   8   3         4
                42.02          1.42        2.1504   -4   2   2         4
                42.18          6.16        2.1424   -3   8   1         4
                42.88          2.82        2.1091    1   8   3         4
                43.06          1.77        2.1006    3   3   3         4
                43.07          2.91        2.1001    3   8   1         4
                43.40          2.69        2.0852    2   0   4         2
                43.68          2.03        2.0722    4   0   2         2
                43.82          1.29        2.0660    1  11   1         4
                44.10          1.29        2.0534   -4   4   2         4
                44.26          2.81        2.0463    3   4   3         4
                46.09          1.56        1.9693    2   4   4         4
                46.22          3.29        1.9643    0   7   4         4
                46.37          1.88        1.9583    4   4   2         4
                46.58          2.26        1.9499    4   7   0         4
                47.04          2.44        1.9317    2  10   2         4
                47.15          2.16        1.9276   -2   6   4         4
                47.36          2.29        1.9195   -1  12   1         4
                47.42          1.42        1.9174   -4   6   2         4
                47.57          3.39        1.9115    3   6   3         4
                47.63          5.91        1.9092    1  12   1         4
                48.03          2.82        1.8943   -1  10   3         4
                48.21          2.80        1.8878   -3  10   1         4
                48.63          1.57        1.8722    0   8   4         4
                48.83          3.28        1.8649    1  10   3         4
                48.98          1.87        1.8597    4   8   0         4
                49.01          3.08        1.8587    3  10   1         4
                49.06          8.59        1.8569    1   0   5         2
                49.14          1.19        1.8539   -1   3   5         4
                49.45          2.13        1.8431    0  12   2         4
                49.54          2.47        1.8401    2  12   0         4
                49.58          7.62        1.8387    5   0   1         2
                49.63          5.13        1.8370    3   7   3         4
                49.66          1.43        1.8358   -5   3   1         4
                49.68          2.94        1.8350    1   2   5         4
                50.20          2.59        1.8174    5   2   1         4
                50.23          4.09        1.8163   -1   4   5         4
                50.74          2.42        1.7992   -5   4   1         4
                52.39         15.60        1.7465   -4   0   4         2
                52.82          2.63        1.7332   -2  12   2         4
                52.98          1.34        1.7283   -4   2   4         4
                53.26          1.31        1.7201   -1   6   5         4
                53.56          1.89        1.7111    0  14   0         2
                53.75          1.28        1.7055   -5   6   1         4
                53.82          5.61        1.7033    2  12   2         4
                54.10          5.69        1.6951    0  10   4         4
                54.21          1.10        1.6919   -3   0   5         2
                54.43          5.43        1.6858    4  10   0         4
                54.50          1.08        1.6837    1   6   5         4
                54.54          1.02        1.6826   -5   0   3         2
                54.72          3.10        1.6775   -1  12   3         4
                54.88          3.55        1.6730   -3  12   1         4
                54.99          4.58        1.6698   -3  10   3         4
                55.16          1.10        1.6652   -1   7   5         4
                55.64          1.21        1.6520   -5   7   1         4
                56.34          2.44        1.6330    4   0   4         2
                56.52          1.46        1.6282   -3   4   5         4
                56.80          1.76        1.6208   -2  10   4         4
                56.84          1.55        1.6199   -5   4   3         4
                57.04          1.18        1.6147   -4  10   2         4
                57.64          1.67        1.5992    0   0   6         2
                57.78          1.41        1.5957    0   1   6         4
                58.34          1.48        1.5818    6   0   0         2
                58.48          1.27        1.5783    6   1   0         4
                59.32          1.30        1.5578   -3   6   5         4
                60.06          2.13        1.5404    3   4   5         4
                60.09          4.34        1.5398    3  11   3         4
                60.37          2.17        1.5334    5   4   3         4
                61.14          1.03        1.5157    2  14   2         4
                61.34          1.28        1.5114    4   6   4         4
                61.46          1.81        1.5087   -4   8   4         4
                61.94          3.26        1.4981   -2   4   6         4
                61.98          2.73        1.4972    0  16   0         2
                62.54          3.35        1.4852   -6   4   2         4
                62.77          1.03        1.4804    3   6   5         4
                64.60          1.63        1.4427   -2   6   6         4
                64.64          1.49        1.4419    2   4   6         4
                65.03          1.00        1.4343   -1  11   5         4
                65.06          1.80        1.4336    4   8   4         4
                65.18          1.13        1.4313   -6   6   2         4
                65.22          1.30        1.4305    6   4   2         4
                65.46          1.30        1.4258   -5  11   1         4
                65.80          1.33        1.4192   -1  15   3         4
                65.95          1.33        1.4165   -3  15   1         4
                67.24          2.92        1.3923    2   6   6         4
                67.81          2.52        1.3820    6   6   2         4
                68.90          1.23        1.3627    2   7   6         4
                69.47          1.13        1.3531    6   7   2         4
                69.69          1.99        1.3493    4  10   4         4
                69.78          2.00        1.3478   -1  16   3         4
                69.92          2.15        1.3454   -3  16   1         4
                70.42          1.25        1.3371    1  16   3         4
                70.56          1.52        1.3348    3  16   1         4
                70.80          2.68        1.3309    0  18   0         2
                70.90          1.15        1.3293   -6   4   4         4
                71.54          1.28        1.3188   -5   6   5         4
                72.27          1.12        1.3074   -1  18   1         4
                73.05          1.84        1.2953   -4   6   6         4
                73.39          1.35        1.2901   -6   6   4         4
                73.41          1.58        1.2897   -3   0   7         2
                73.85          1.02        1.2832   -7   6   1         4
                73.90          1.47        1.2825   -1  17   3         4
                74.04          1.07        1.2804   -3  17   1         4
                74.10          1.24        1.2795   -7   0   3         2
                76.47          1.11        1.2456    3  12   5         4
                78.16          1.49        1.2229   -2  12   6         4
                78.69          1.43        1.2159   -6  12   2         4
                82.82          1.18        1.1656    1  16   5         4
                84.47          1.56        1.1469    5  10   5         4
                85.40          1.64        1.1367   -4  16   4         4
                86.17          1.03        1.1286   -7  10   3         4
                86.63          1.03        1.1238   -7   4   5         4
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.