Nahcolite
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from the powder pattern for R070237
      Sass R L, Scheuerman R F
      Acta Crystallographica 15 (1962) 77-81
      The crystal structure of sodium bicarbonate
      Locality: synthetic

      CELL PARAMETERS:   3.479775   9.681716   8.053732   90.00000   112.1440   90.00000
      SPACE GROUP: P2_1/c
      X-RAY WAVELENGTH:     1.541838
               2-THETA      INTENSITY    D-SPACING   H   K   L
                14.98          8.94        5.9091    0   1   1
                18.32          8.34        4.8409    0   2   0
                21.87          3.11        4.0608    0   2   1
                23.84          2.30        3.7298    0   0   2
                25.58         30.60        3.4805    0   1   2
                27.26          8.33        3.2696   -1   1   1
                27.66          6.84        3.2231    1   0   0
                28.97         12.09        3.0797   -1   0   2
                29.18         38.66        3.0581    1   1   0
                30.15         17.18        2.9619    0   3   1
                30.23         58.42        2.9546    0   2   2
                30.44        100.00        2.9348   -1   1   2
                33.38         29.17        2.6828    1   2   0
                34.49         92.41        2.5984   -1   2   2
                37.31          3.37        2.4084    0   1   3
                37.56          1.67        2.3932   -1   1   3
                39.05         24.26        2.3047    1   2   1
                40.77         37.03        2.2118    0   2   3
                43.45          2.13        2.0813    1   0   2
                44.49          1.78        2.0348    1   1   2
                44.50         24.81        2.0345    1   3   1
                44.60         11.08        2.0304    0   4   2
                45.65          7.67        1.9859   -1   4   1
                46.05          9.45        1.9697    0   3   3
                46.10         15.72        1.9673   -1   0   4
                46.91         13.43        1.9354    1   4   0
                47.52          5.03        1.9121    1   2   2
                47.76         22.65        1.9030   -1   4   2
                48.54          3.48        1.8742    0   5   1
                48.80          2.02        1.8649    0   0   4
                50.01          2.56        1.8226   -1   2   4
                51.35          4.49        1.7781    1   4   1
                52.66         12.21        1.7368   -2   0   2
                52.55          2.66        1.7402    0   2   4
                52.74          3.71        1.7344    0   4   3
                54.31         11.89        1.6880   -2   1   1
                54.19          1.74        1.6913   -1   5   1
                55.29         15.01        1.6604    1   1   3
                56.23          1.45        1.6348   -2   2   2
                56.06          3.96        1.6393   -1   5   2
                57.11          2.80        1.6116    2   0   0
                57.03         10.22        1.6136    0   6   0
                58.44          3.48        1.5781    1   4   2
                58.42          1.30        1.5785   -2   2   3
                58.27          8.53        1.5823   -1   1   5
                59.29          1.84        1.5574    1   5   1
                60.04          1.38        1.5399   -2   0   4
                60.56          1.80        1.5278    0   5   3
                60.61          2.43        1.5267   -1   4   4
                60.73          3.23        1.5239   -1   5   3
                60.87         11.52        1.5207   -2   1   4
                60.79          1.34        1.5225   -1   2   5
                62.69          3.66        1.4810    0   6   2
                63.33          3.28        1.4674   -2   2   4
                64.54          2.43        1.4429    1   6   0
                65.41          1.67        1.4258    0   2   5
                66.63          2.10        1.4025    2   2   1
                68.18          1.05        1.3745   -2   4   3
                68.20          1.16        1.3741    1   6   1
                69.34          5.12        1.3542    0   3   5
                69.53          1.03        1.3509   -1   6   3
                70.53          5.82        1.3342    2   3   1
                69.99          1.64        1.3432    0   5   4
                72.77          1.68        1.2986    2   1   2
                72.73          2.40        1.2992   -2   4   4
                74.59          1.02        1.2713    1   5   3
                76.57          1.45        1.2433    0   0   6
                78.29          1.32        1.2203    0   6   4
                79.06          1.01        1.2102    0   8   0
                79.46          1.36        1.2052   -2   5   4
                80.15          1.42        1.1966   -2   2   6
                81.15          1.72        1.1843    1   1   5
                81.36          1.34        1.1818    0   5   5
                84.99          3.64        1.1403    2   6   0
                87.49          1.15        1.1140   -2   6   4
                87.80          1.50        1.1109    0   7   4
                89.20          1.47        1.0970    2   3   3
                90.13          1.56        1.0882    0   8   3
                90.13          1.56        1.0882    0   8   3
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.