Palygorskite
      Guistetto R, Chiari G
      European Journal of Mineralogy 16 (2004) 521-532
      Crystal structure refinement of palygorskite from neutron powder diffraction
      Locality: Lorenzo Pech mine, near Ticul, on the way to Chapab, Chiapas, Mexico
      Note: Occupancies created to match reported formula
      _database_code_amcsd 0007074

      CELL PARAMETERS:   13.3370  17.8790   5.2640   90.000  105.270   90.000
      SPACE GROUP: C2/m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   1210.898
      Density (g/cm3):      2.350
      MAX. ABS. INTENSITY / VOLUME**2:      11.92165245    
      RIR:      1.652
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 8.47        100.00       10.4432    1   1   0         4
                 9.89         12.06        8.9395    0   2   0         2
                13.77         10.28        6.4331    2   0   0         2
                16.39         11.55        5.4077    1   3   0         4
                16.98          2.47        5.2216    2   2   0         4
                17.46          1.06        5.0782    0   0   1         2
                17.71          2.16        5.0072   -1   1   1         4
                19.20          2.18        4.6216   -2   0   1         2
                19.86          6.58        4.4697    0   4   0         2
                21.02          6.18        4.2254    1   1   1         4
                21.31          3.50        4.1704    3   1   0         4
                21.65          2.85        4.1054   -2   2   1         4
                22.65          4.11        3.9250   -1   3   1         4
                24.25          2.46        3.6707    2   4   0         4
                25.35          2.79        3.5129    1   3   1         4
                25.59          1.41        3.4811    3   3   0         4
                25.86          2.01        3.4452    1   5   0         4
                26.98         14.62        3.3045    2   2   1         4
                27.73          4.50        3.2165    4   0   0         2
                27.80          4.12        3.2089   -3   3   1         4
                28.68          3.05        3.1131   -4   0   1         2
                30.31         10.84        2.9493   -1   5   1         4
                32.42          2.34        2.7620    1   5   1         4
                34.35          2.56        2.6108    4   4   0         4
                34.39          2.33        2.6079   -2   0   2         2
                34.91          1.23        2.5700    0   6   1         4
                35.06          2.02        2.5597   -5   1   1         4
                35.24          1.01        2.5470    5   1   0         4
                35.35          1.23        2.5391    0   0   2         2
                35.86          1.55        2.5044   -2   6   1         4
                36.80          1.30        2.4425    0   2   2         4
                37.43          1.23        2.4030   -1   3   2         4
                38.98          2.81        2.3108   -4   0   2         2
                39.86          7.75        2.2614    3   5   1         4
                40.03          1.92        2.2526   -2   4   2         4
                41.30          1.18        2.1860    4   6   0         4
                41.53          2.62        2.1743    2   0   2         2
                42.14          2.26        2.1444    6   0   0         2
                42.84          1.82        2.1111    2   8   0         4
                43.17          1.93        2.0956   -5   5   1         4
                43.26          1.29        2.0913   -5   1   2         4
                44.31          1.03        2.0441   -3   5   2         4
                46.26          1.23        1.9625   -2   6   2         4
                50.69          1.84        1.8009    5   5   1         4
                51.09          1.49        1.7879    0  10   0         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.