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 II

      CELL PARAMETERS:  13.1503 13.1503  6.2469   90.000   90.000   90.000
      SPACE GROUP: I-42d     
      X-RAY WAVELENGTH:     1.541838
      MAX. ABS. INTENSITY / VOLUME**2:      18.34707494    
               2-THETA      INTENSITY    D-SPACING   H   K   L
                13.47        100.00        6.5752    2   0   0
                15.71         10.88        5.6426    1   0   1
                19.09          2.26        4.6493    2   2   0
                20.74         30.66        4.2820    2   1   1
                21.37          3.80        4.1585    3   1   0
                28.34          1.25        3.1497    3   2   1
                30.18          9.58        2.9609    1   1   2
                30.40          5.41        2.9405    4   2   0
                31.49         51.07        2.8406    4   1   1
                31.72          7.96        2.8213    2   0   2
                35.96         12.27        2.4974    3   1   2
                37.09          1.46        2.4240    5   0   1
                37.09         14.65        2.4240    4   3   1
                38.73          2.45        2.3247    4   4   0
                39.63          3.29        2.2744    5   2   1
                39.81          3.33        2.2644    4   0   2
                41.02          2.06        2.2001    3   3   2
                42.21          2.66        2.1410    4   2   2
                45.62          1.67        1.9887    5   1   2
                46.25          3.94        1.9629    2   1   3
                46.55          2.23        1.9510    5   4   1
                50.47          2.45        1.8083    3   2   3
                52.48          3.42        1.7436    4   1   3
                53.03          1.30        1.7267    7   3   0
                55.94          2.49        1.6438    8   0   0
                56.62          2.07        1.6257    6   5   1
                57.69          5.11        1.5979    5   5   2
                57.82          4.19        1.5947    8   2   0
                58.23          2.65        1.5845    5   2   3
                59.16          2.47        1.5617    0   0   4
                61.35          1.17        1.5112    7   3   2
                61.87          1.08        1.4998    6   1   3
                62.76          1.04        1.4804    2   2   4
                63.25          2.63        1.4702    8   4   0
                63.64          1.51        1.4622    5   4   3
                64.01          2.12        1.4546    8   0   2
                65.38          1.23        1.4273    6   3   3
                65.62          1.28        1.4227    9   0   1
                67.34          1.41        1.3906    9   2   1
                67.96          1.70        1.3793    4   2   4
                68.31          2.88        1.3731    7   5   2
                70.84          1.31        1.3302    8   4   2
                72.15          2.30        1.3093    6   5   3
                74.96          1.64        1.2670    9   3   2
                78.88          1.00        1.2135    8   7   1
                83.01          1.14        1.1633    4   1   5
                85.36          1.07        1.1372   10   4   2
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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.