Hilgardite
      Ghose S, Wan C
      American Mineralogist 64 (1979) 187-195
      Hilgardite, Ca2[B5O9]Cl*H2O: a piezoelectric zeolite-type pentaborate
      Note: polytype Hilgardite-4M
      Locality: Choctow Salt Dome, Iberville Parish, Louisiana, USA
      _database_code_amcsd 0000696

      CELL PARAMETERS:   11.4380  11.3180   6.3180   90.000   90.060   90.000
      SPACE GROUP: Aa        
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    817.898
      Density (g/cm3):      2.693
      MAX. ABS. INTENSITY / VOLUME**2:      5.774737468    
      RIR:      0.698
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                15.49         29.51        5.7190    2   0   0         1
                15.66         31.10        5.6590    0   2   0         2
                16.07         10.20        5.5167    0   1   1         2
                17.48          1.67        5.0722    1   2   0         2
                17.86          7.02        4.9671    1   1   1         2
                22.10         14.40        4.0226    2   2   0         2
                22.38          4.18        3.9723   -2   1   1         2
                27.54         29.29        3.2391    0   3   1         2
                28.22          4.37        3.1620    3   2   0         2
                28.25         25.30        3.1590    0   0   2         1
                28.44         23.26        3.1378   -3   1   1         2
                28.47         21.51        3.1351    3   1   1         2
                28.64          4.86        3.1170   -1   3   1         2
                28.65          3.84        3.1161    1   3   1         2
                31.28        100.00        2.8595    4   0   0         1
                31.62         83.26        2.8295    0   4   0         2
                31.76         10.17        2.8178    2   3   1         2
                32.36          6.17        2.7664   -2   0   2         1
                32.39         11.95        2.7640    2   0   2         1
                32.46         43.50        2.7583    0   2   2         2
                32.60          2.93        2.7467    1   4   0         2
                33.41          4.30        2.6820   -1   2   2         2
                33.42          6.14        2.6809    1   2   2         2
                35.16         19.73        2.5522    4   2   0         2
                35.34          2.83        2.5397   -4   1   1         2
                35.37          6.75        2.5378    4   1   1         2
                35.39         15.81        2.5361    2   4   0         2
                36.14          5.57        2.4853   -2   2   2         2
                36.41          3.78        2.4679    3   3   1         2
                40.38          3.09        2.2338    3   2   2         2
                42.14          6.56        2.1443   -4   3   1         2
                42.17          1.86        2.1431    4   3   1         2
                42.42         11.29        2.1310    0   5   1         2
                42.63          5.04        2.1211   -4   0   2         1
                42.63          1.26        2.1209    5   2   0         2
                42.67         22.20        2.1189    4   0   2         1
                42.78         17.66        2.1138   -5   1   1         2
                42.91          8.88        2.1077    0   4   2         2
                43.18          2.19        2.0950   -1   5   1         2
                43.19         16.78        2.0948    1   5   1         2
                43.66          5.12        2.0730   -1   4   2         2
                43.67          5.43        2.0725    1   4   2         2
                43.72         10.35        2.0705    0   1   3         2
                44.46         29.83        2.0377   -1   1   3         2
                45.08         10.29        2.0113    4   4   0         2
                45.43          6.03        1.9966    2   5   1         2
                45.68         16.54        1.9861   -4   2   2         2
                45.72         19.48        1.9843    4   2   2         2
                45.88         12.99        1.9781   -2   4   2         2
                45.90         10.62        1.9772    2   4   2         2
                46.64          6.91        1.9474   -2   1   3         2
                46.67          5.07        1.9462    2   1   3         2
                47.71          2.54        1.9063    6   0   0         1
                48.24          3.28        1.8863    0   6   0         2
                48.72         22.42        1.8691   -5   3   1         2
                48.94          1.09        1.8612    1   6   0         2
                48.96         15.78        1.8604   -3   5   1         2
                48.98          2.17        1.8599    3   5   1         2
                49.39          5.17        1.8451   -3   4   2         2
                49.42          5.75        1.8440    3   4   2         2
                49.57          2.68        1.8389    0   3   3         2
                50.16          2.32        1.8187    3   1   3         2
                50.24          8.86        1.8158   -1   3   3         2
                50.26          3.36        1.8153    1   3   3         2
                50.52          2.33        1.8066    6   2   0         2
                51.95          2.22        1.7600    5   2   2         2
                52.27          1.18        1.7501    2   3   3         2
                53.63          6.44        1.7090   -4   5   1         2
                53.65          7.15        1.7084    4   5   1         2
                54.03          2.33        1.6972   -4   4   2         2
                54.07         16.30        1.6960    4   4   2         2
                54.71          6.94        1.6778   -4   1   3         2
                54.76          2.56        1.6762    4   1   3         2
                55.46          2.35        1.6569   -3   3   3         2
                55.98          1.06        1.6425    6   3   1         2
                56.40          1.80        1.6314    6   0   2         1
                56.85          3.52        1.6196    0   6   2         2
                57.47          1.19        1.6034    1   6   2         2
                58.37          2.07        1.5810    6   4   0         2
                58.82          1.37        1.5699    7   2   0         2
                58.94          1.73        1.5671   -7   1   1         2
                58.97          3.32        1.5664    0   7   1         2
                58.97          2.45        1.5663    7   1   1         2
                59.25          1.57        1.5595   -5   5   1         2
                59.27          2.69        1.5590    5   5   1         2
                59.29          1.12        1.5585   -2   6   2         2
                59.63          1.49        1.5506   -5   4   2         2
                59.67          1.76        1.5495    5   4   2         2
                59.77          1.09        1.5473   -4   3   3         2
                59.82          1.56        1.5460    4   3   3         2
                60.33          1.57        1.5343    5   1   3         2
                60.59          2.99        1.5282   -1   5   3         2
                60.60          3.25        1.5279    1   5   3         2
                60.86          1.47        1.5221    2   0   4         1
                60.89          5.10        1.5214    0   2   4         2
                61.37          2.61        1.5106    2   7   1         2
                63.23          2.79        1.4706   -2   2   4         2
                63.27          1.33        1.4699    2   2   4         2
                64.30          2.38        1.4487    3   7   1         2
                65.26          1.24        1.4298   -3   5   3         2
                65.26          3.71        1.4297    8   0   0         1
                66.04          1.02        1.4147    0   8   0         2
                66.06          1.35        1.4143   -6   4   2         2
                66.11          1.36        1.4133    6   4   2         2
                66.31          2.89        1.4096   -4   6   2         2
                66.35          1.71        1.4089    4   6   2         2
                66.61          1.22        1.4041    1   8   0         2
                66.66          1.66        1.4031   -6   1   3         2
                67.58          4.33        1.3862    8   2   0         2
                67.72          1.89        1.3837    8   1   1         2
                68.30          4.01        1.3734    2   8   0         2
                70.02          2.43        1.3437   -4   2   4         2
                70.09          2.69        1.3425    4   2   4         2
                70.19          1.08        1.3409    6   6   0         2
                70.22          1.03        1.3405    2   4   4         2
                71.29          1.16        1.3229    6   3   3         2
                72.21          1.03        1.3083   -8   3   1         2
                72.94          2.90        1.2969   -7   5   1         2
                73.23          2.68        1.2926   -5   7   1         2
                73.25          1.20        1.2923    5   7   1         2
                74.19          2.36        1.2781    5   5   3         2
                74.33          1.33        1.2761    8   4   0         2
                74.43          2.23        1.2746   -1   7   3         2
                74.76          2.63        1.2698   -8   2   2         2
                74.83          1.85        1.2689    8   2   2         2
                77.01          2.48        1.2382    9   1   1         2
                77.90          1.28        1.2263   -1   9   1         2
                77.91          2.73        1.2262    1   9   1         2
                78.14          1.02        1.2231   -3   8   2         2
                78.23          1.95        1.2220   -7   3   3         2
                78.70          1.91        1.2158   -3   7   3         2
                78.72          1.12        1.2156    6   0   4         1
                79.08          2.32        1.2110    0   6   4         2
                79.60          1.32        1.2044   -1   6   4         2
                79.61          1.83        1.2042    1   6   4         2
                80.56          3.81        1.1924    3   1   5         2
                80.63          2.08        1.1915    1   3   5         2
                80.78          4.30        1.1897   -6   2   4         2
                80.96          1.06        1.1875   -8   5   1         2
                81.00          1.95        1.1871    8   5   1         2
                81.31          1.36        1.1833   -9   3   1         2
                81.35          1.65        1.1829    9   3   1         2
                81.35          1.53        1.1828    8   4   2         2
                81.83          1.96        1.1771   -8   1   3         2
                81.87          1.92        1.1766    4   8   2         2
                82.13          2.12        1.1736   -3   9   1         2
                82.18          1.21        1.1730   -2   3   5         2
                82.22          1.38        1.1725    2   3   5         2
                84.79          2.32        1.1434   -3   3   5         2
                84.85          1.11        1.1427    3   3   5         2
                85.47          1.82        1.1361    6   8   0         2
                85.98          1.43        1.1306    7   7   1         2
                87.20          1.40        1.1179   -6   4   4         2
                87.44          2.30        1.1155   -4   6   4         2
                89.88          2.02        1.0913    9   5   1         2
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.