Gonnardite
      Lee Y, Hriljac J A, Vogt T
      American Mineralogist 90 (2005) 247-251
      Variable-temperature structural studies of tetranatrolite from Mt. Saint-Hilaire:
      Synchrotron X-ray powder diffraction and Rietveld analysis
      Sample: T = 300 C, phase I
      _database_code_amcsd 0003725

      CELL PARAMETERS:   12.9202  12.9202   6.6950   90.000   90.000   90.000
      SPACE GROUP: I-42d     
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   1117.607
      Density (g/cm3):      2.322
      MAX. ABS. INTENSITY / VOLUME**2:      7.733248882    
      RIR:      1.084
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                13.71         34.11        6.4601    2   0   0         4
                14.90         88.22        5.9443    1   0   1         8
                19.43         34.68        4.5680    2   2   0         4
                20.30         62.43        4.3743    2   1   1         8
                21.75         34.70        4.0857    3   1   0         8
                27.62          2.86        3.2301    4   0   0         4
                28.25         53.05        3.1593    3   2   1         8
                28.40         18.47        3.1432    1   1   2         4
                30.07         31.90        2.9722    2   0   2         8
                30.95          4.75        2.8890    4   2   0         8
                31.52        100.00        2.8381    4   1   1         8
                34.64         10.52        2.5894    3   1   2         8
                35.43          1.83        2.5339    5   1   0         8
                37.30         17.36        2.4107    4   3   1         8
                38.74          7.89        2.3244    4   0   2         8
                39.45          6.18        2.2840    4   4   0         4
                39.92          1.27        2.2586    5   2   1         8
                40.03         12.56        2.2526    3   3   2         4
                40.72          1.33        2.2158    5   3   0         8
                41.28         18.27        2.1871    4   2   2         8
                41.96          4.06        2.1534    6   0   0         4
                43.47          2.92        2.0818    2   1   3         8
                45.79          2.98        1.9814    3   0   3         8
                47.04          3.36        1.9320    5   4   1         8
                48.03          5.54        1.8943    3   2   3         8
                49.32          1.95        1.8477    5   3   2         8
                50.19          9.57        1.8178    4   1   3         8
                50.97          8.69        1.7917    6   4   0         8
                51.35          3.63        1.7794    7   0   1         8
                52.47          7.39        1.7438    6   2   2         8
                53.41          4.16        1.7155    7   2   1         8
                54.05          9.98        1.6965    7   3   0         8
                54.32          3.82        1.6890    5   0   3         8
                54.85          4.95        1.6738    0   0   4         2
                56.30          3.51        1.6341    5   2   3         8
                57.02          1.13        1.6150    8   0   0         4
                57.38          5.08        1.6060    6   5   1         8
                57.46          5.53        1.6038    5   5   2         4
                57.46          1.20        1.6038    7   1   2         8
                58.95          1.46        1.5668    8   2   0         8
                59.29          2.25        1.5585    8   1   1         8
                59.70          3.64        1.5488    3   1   4         8
                60.14          2.56        1.5386    6   1   3         8
                61.25          1.83        1.5133    7   3   2         8
                61.77          1.06        1.5019    7   5   0         8
                63.84          1.65        1.4581    6   3   3         8
                64.01          4.40        1.4546    8   0   2         8
                64.32          1.16        1.4483    4   2   4         8
                64.51          1.81        1.4445    8   4   0         8
                65.41          1.04        1.4268    9   1   0         8
                66.63          1.82        1.4037    9   0   1         8
                67.01          2.48        1.3966    5   1   4         8
                67.42          1.15        1.3890    7   2   3         8
                68.47          1.46        1.3703    7   5   2         8
                69.64          3.22        1.3501    4   4   4         4
                70.14          2.03        1.3418    8   5   1         8
                70.51          2.99        1.3355    5   3   4         8
                71.08          1.02        1.3263    8   4   2         8
                71.94          1.22        1.3125    9   1   2         8
                72.63          2.22        1.3017    8   1   3         8
                73.57          1.69        1.2874    9   4   1         8
                75.85          1.51        1.2543    3   2   5         8
                77.53          1.99        1.2313    4   1   5         8
                78.69          1.11        1.2160    7   7   2         4
                79.52          1.00        1.2054   10   0   2         8
                79.98          2.09        1.1996   10   4   0         8
                80.28          2.12        1.1959    8   7   1         8
                80.64          4.54        1.1915    7   3   4         8
                85.95          1.52        1.1309    9   4   3         8
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.