Hilgardite
      Wan C, Ghose S
      American Mineralogist 68 (1983) 604-613
      Parahilgardite, Ca6[B5O9]3Cl3*3H2O: a triclinic piezoelectric
      zeolite-type pentaborate
      Note: polytype Hilgardite-3A
      Locality: Iberville Parish, Louisiana, USA
      _database_code_amcsd 0000901

      CELL PARAMETERS:   17.4950   6.4870   6.3130   60.770   79.560   83.960
      SPACE GROUP: P1        
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    614.766
      Density (g/cm3):      2.687
      MAX. ABS. INTENSITY / VOLUME**2:      5.601747507    
      RIR:      0.679
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                15.45         32.62        5.7340    3   0   0         1
                15.66         31.17        5.6599    0   1   0         1
                16.24          3.23        5.4572    1   1   1         1
                16.27          2.13        5.4471    0   0   1         1
                16.29          1.85        5.4399    0   1   1         1
                16.32          2.93        5.4322    1   0   1         1
                17.77          6.44        4.9923    2   1   1         1
                17.92          1.76        4.9487    2   0   1         1
                18.60          1.10        4.7710    2   1   0         1
                21.85         10.50        4.0680    3   1   0         1
                22.28          4.90        3.9894   -3   1   0         1
                24.16          2.35        3.6836   -3   0   1         1
                24.37          2.05        3.6518   -3   1   1         1
                26.27          1.13        3.3925   -4   1   0         1
                27.59          8.61        3.2325    1   2   1         1
                27.65          8.05        3.2267    0  -1   1         1
                27.68          4.71        3.2222    0   2   1         1
                27.73          4.79        3.2169    1  -1   1         1
                28.26         11.24        3.1574    5   1   1         1
                28.27         24.80        3.1565    1   1   2         1
                28.30         17.27        3.1537   -4   0   1         1
                28.54          3.10        3.1278   -1  -1   1         1
                28.54         10.91        3.1277    5   0   1         1
                28.54          7.56        3.1275   -4   1   1         1
                28.75          3.38        3.1055   -1   2   1         1
                28.79          5.40        3.1012    2  -1   1         1
                30.13          1.17        2.9657    5   1   0         1
                30.28          3.44        2.9521    3   2   1         1
                30.72          4.75        2.9101    3  -1   1         1
                31.20        100.00        2.8670    6   0   0         1
                31.62         83.45        2.8300    0   2   0         1
                31.95          2.27        2.8012    1   2   0         1
                32.15          2.79        2.7837   -1   2   0         1
                32.37         12.07        2.7661    4   1   2         1
                32.39          5.85        2.7643   -2   1   2         1
                32.45         21.92        2.7591    1   2   2         1
                32.51         22.74        2.7545    1   0   2         1
                32.82          1.29        2.7286    2   2   2         1
                32.83          1.49        2.7276    4   2   1         1
                32.89          1.45        2.7236    0   0   2         1
                32.93          1.58        2.7199    0   2   2         1
                32.98          2.01        2.7161    2   0   2         1
                33.06          1.07        2.7096    6   0   1         1
                34.02          1.77        2.6350    3   2   2         1
                34.27          1.12        2.6165    3   0   2         1
                34.80         10.24        2.5780    6   1   0         1
                35.09          8.10        2.5576    3   2   0         1
                35.37          8.21        2.5377   -6   1   0         1
                35.65          8.17        2.5183   -3   2   0         1
                35.98          1.68        2.4962    4   2   2         1
                36.02          1.51        2.4935    5   2   1         1
                36.05          2.35        2.4915   -2   0   2         1
                36.28          3.29        2.4764   -2   2   2         1
                36.68          2.81        2.4502    5  -1   1         1
                37.54          2.40        2.3958    7   1   1         1
                37.57          1.22        2.3938   -6   0   1         1
                37.84          2.10        2.3773    7   0   1         1
                37.85          1.23        2.3768   -6   1   1         1
                40.42          1.63        2.2318   -5   2   1         1
                42.42          5.62        2.1308    1   3   1         1
                42.48          2.58        2.1280    0  -2   1         1
                42.56         10.63        2.1241   -7   0   1         1
                42.58          2.81        2.1233    1  -2   1         1
                42.58         21.21        2.1231    7   1   2         1
                42.62          4.32        2.1215   -5   1   2         1
                42.85          7.22        2.1104   -7   1   1         1
                42.88          4.45        2.1092    1   3   2         1
                42.97          5.55        2.1050    1  -1   2         1
                43.00         12.59        2.1035    2   3   1         1
                43.13          1.14        2.0973    2   3   2         1
                43.30          1.33        2.0897    0   3   2         1
                43.30          1.96        2.0895   -1   3   1         1
                43.35          4.68        2.0872    2  -2   1         1
                43.38          2.15        2.0859    2  -1   2         1
                43.79          1.11        2.0675    7   2   1         1
                43.81          3.20        2.0664    2   2   3         1
                43.83          1.58        2.0653    1   2   3         1
                43.84          2.03        2.0652   -6  -1   1         1
                43.85          1.96        2.0648    1   1   3         1
                43.86          2.62        2.0641    2   1   3         1
                44.05          1.01        2.0556    3   3   2         1
                44.15          2.15        2.0513   -1  -1   2         1
                44.38          1.30        2.0414   -1   3   2         1
                44.49         11.61        2.0363    0   1   3         1
                44.52         18.89        2.0352    0   2   3         1
                44.54          1.20        2.0343    3   1   3         1
                44.55          4.73        2.0340    6   2   0         1
                44.57          1.29        2.0330   -6   2   1         1
                44.58          1.07        2.0324    7  -1   1         1
                44.77          1.67        2.0242    3  -2   1         1
                45.39          8.16        1.9982    7   2   2         1
                45.46          7.62        1.9951   -5   0   2         1
                45.47          5.16        1.9947   -6   2   0         1
                45.60          3.63        1.9892    4   3   2         1
                45.70          8.84        1.9851   -2  -1   2         1
                45.72          1.45        1.9843    4   2   3         1
                45.78          1.24        1.9822   -1   1   3         1
                45.84          1.53        1.9796   -1   2   3         1
                45.85          1.73        1.9791    4   1   3         1
                45.88          8.56        1.9780   -5   2   2         1
                45.89         11.95        1.9776    7   0   2         1
                46.08          4.27        1.9699   -2   3   2         1
                46.08          2.47        1.9697    4   3   1         1
                46.14          7.42        1.9672    4  -1   2         1
                47.57          3.15        1.9113    9   0   0         1
                47.66          2.15        1.9082   -2   1   3         1
                47.76          1.82        1.9045   -2   2   3         1
                48.24          2.93        1.8866    0   3   0         1
                48.26         10.44        1.8858   -7  -1   1         1
                48.35          1.22        1.8825   -3   3   2         1
                48.41          1.78        1.8803    5  -1   2         1
                48.56          7.18        1.8750   -4  -2   1         1
                49.05         12.25        1.8574   -7   2   1         1
                49.32          8.12        1.8477   -4   3   1         1
                49.36          1.68        1.8463    5  -2   1         1
                49.60          1.04        1.8378    2   3   3         1
                50.03          1.76        1.8233    6   2   3         1
                50.07          2.06        1.8217    9   1   0         1
                50.15          2.79        1.8191    3   3   3         1
                50.25          4.63        1.8157    0   0   3         1
                50.32          4.28        1.8133    0   3   3         1
                50.41          2.13        1.8103    6   3   2         1
                50.51          2.00        1.8069   -4  -1   2         1
                50.71          1.14        1.8003   -9   1   0         1
                51.19          1.16        1.7845    6  -1   2         1
                52.38          1.91        1.7468   -5   3   1         1
                52.41          2.30        1.7457    6  -2   1         1
                53.01          1.60        1.7274   -4   1   3         1
                53.17          1.96        1.7225   -4   2   3         1
                53.55          8.90        1.7113    7   3   2         1
                53.65          1.29        1.7082   -5  -1   2         1
                54.39          1.37        1.6869   -5   3   2         1
                54.43          7.15        1.6856    7  -1   2         1
                54.78          2.67        1.6758    7   3   1         1
                54.84          2.20        1.6741   -6  -2   1         1
                55.31          1.06        1.6610   -3   0   3         1
                55.67          1.43        1.6509   -3   3   3         1
                55.87          1.20        1.6456   -6   3   1         1
                55.90          1.08        1.6447    7  -2   1         1
                56.25          1.71        1.6355   10   1   2         1
                56.31          1.08        1.6337    8   2   3         1
                56.38          1.51        1.6318   -5   1   3         1
                56.57          1.30        1.6269   -5   2   3         1
                56.80          1.59        1.6208    1   4   2         1
                56.91          1.93        1.6180    1  -2   2         1
                58.55          2.13        1.5764    8   3   1         1
                58.61          1.44        1.5749   -7  -2   1         1
                58.62          1.32        1.5749   11   1   1         1
                58.65          1.40        1.5741  -10   0   1         1
                58.94          1.23        1.5670    1   4   1         1
                58.96          1.21        1.5666   11   0   1         1
                59.00          1.16        1.5655    0  -3   1         1
                60.09          1.29        1.5398    9   2   3         1
                60.43          1.32        1.5319    3   4   3         1
                60.57          1.57        1.5287    0  -1   3         1
                60.68          1.21        1.5263    0   4   3         1
                60.79          1.87        1.5236    3  -1   3         1
                60.87          1.39        1.5220    5   2   4         1
                60.91          3.09        1.5210    2   3   4         1
                60.92          1.32        1.5206    3  -3   1         1
                60.98          2.11        1.5195    2   1   4         1
                63.24          1.49        1.4704   -1   1   4         1
                63.36          1.19        1.4680   -1   3   4         1
                64.76          1.20        1.4395    5  -3   1         1
                65.07          3.37        1.4335   12   0   0         1
                65.81          1.31        1.4191   -5  -2   2         1
                66.03          1.08        1.4150    0   4   0         1
                66.54          1.08        1.4053   10  -1   2         1
                66.79          1.53        1.4007   -5   4   2         1
                67.03          2.13        1.3961   12   1   0         1
                67.74          1.68        1.3832  -12   1   0         1
                67.92          1.94        1.3800    3   4   0         1
                68.63          1.81        1.3676   -3   4   0         1
                69.83          1.24        1.3470    8   3   4         1
                69.94          1.05        1.3451   -4   1   4         1
                70.22          1.35        1.3403   -4   3   4         1
                70.24          1.17        1.3401    8   1   4         1
                72.10          1.34        1.3100  -10  -2   1         1
                72.45          1.24        1.3046   -7  -3   1         1
                73.50          1.09        1.2885    9   4   3         1
                73.56          1.11        1.2876  -10   3   1         1
                73.89          1.33        1.2827   -7   4   1         1
                74.32          1.25        1.2762  -11   0   2         1
                74.53          1.25        1.2733    0   5   3         1
                74.68          1.10        1.2710    9  -1   3         1
                74.97          1.14        1.2668  -11   2   2         1
                76.57          1.79        1.2443   14   1   1         1
                77.67          1.13        1.2294    2   5   1         1
                77.78          1.08        1.2279   -9   0   3         1
                78.11          1.18        1.2235    2  -4   1         1
                78.58          1.15        1.2174   11   2   4         1
                78.65          1.01        1.2165   -7   2   4         1
                79.02          1.80        1.2117    2   5   4         1
                80.47          1.65        1.1935    7   3   5         1
                80.59          2.11        1.1920   -7   1   4         1
                80.63          2.22        1.1915    7   2   5         1
                80.80          1.30        1.1895    4   1   5         1
                81.03          1.79        1.1867   -7   3   4         1
                81.58          1.14        1.1801   -4  -4   1         1
                81.66          1.19        1.1791   14  -1   1         1
                84.76          1.74        1.1438   -2   1   5         1
                87.89          1.47        1.1109   -4   5   4         1
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.