Ashcroftine-(Y)
      Moore P B, Sen Gupta P K, Schlemper E O, Merlino S
      American Mineralogist 72 (1987) 1176-1189
      Ashcroftine, ca. K10Na10(Y,Ca)24(OH)4(CO3)16(Si56O140).16H2O, a
      structure with enormous polyanions
      Sample: investigated by Merlino
      _database_code_amcsd 0001130

      CELL PARAMETERS:   24.0390  24.0390  17.5380   90.000   90.000   90.000
      SPACE GROUP: I4/mmm    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:  10134.745
      Density (g/cm3):      2.492
      MAX. ABS. INTENSITY / VOLUME**2:      47.25600396    
      RIR:      6.175
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 5.20        100.00       16.9981    1   1   0         4
                 6.24         24.81       14.1682    1   0   1         8
                 7.35         33.29       12.0195    2   0   0         4
                10.09          2.37        8.7690    0   0   2         2
                10.41          4.99        8.4991    2   2   0         4
                11.35          1.17        7.7931    1   1   2         8
                11.64          5.65        7.6018    3   1   0         8
                12.50          8.79        7.0841    2   0   2         8
                14.51          6.01        6.1029    2   2   2         8
                14.74          4.36        6.0097    4   0   0         4
                16.49          4.40        5.3753    4   2   0         8
                18.79          1.16        4.7227    3   0   3         8
                19.14          1.30        4.6367    5   0   1         8
                20.20          1.38        4.3956    3   2   3        16
                20.25          2.37        4.3845    0   0   4         2
                20.90          1.80        4.2495    4   4   0         4
                21.53          1.05        4.1282    4   1   3        16
                23.26          1.62        3.8242    4   4   2         8
                24.24          2.54        3.6711    5   4   1        16
                24.43          1.09        3.6442    6   0   2         8
                25.10          2.44        3.5479    5   2   3        16
                25.14          3.64        3.5420    4   0   4         8
                25.54          1.71        3.4874    6   2   2        16
                26.21          1.48        3.3996    7   1   0         8
                27.24          1.20        3.2741    6   1   3        16
                27.79          3.60        3.2106    5   1   4        16
                28.65          6.13        3.1160    6   4   2        16
                28.76          2.86        3.1042    3   2   5        16
                29.23          1.90        3.0552    6   3   3        16
                29.73          2.23        3.0049    8   0   0         4
                30.18          4.29        2.9610    7   0   3         8
                31.04          1.28        2.8807    1   1   6         8
                31.57          1.17        2.8336    5   0   5         8
                31.57          2.83        2.8336    4   3   5        16
                32.83          1.15        2.7283    3   1   6        16
                33.34          4.65        2.6876    8   4   0         8
                33.35          3.19        2.6866    7   1   4        16
                33.78          1.36        2.6537    6   4   4        16
                35.03          1.56        2.5617    7   3   4        16
                35.82          1.11        2.5067    6   3   5        16
                37.00          2.26        2.4294    9   0   3         8
                39.32          1.43        2.2914    8   4   4        16
                41.18          1.33        2.1923    0   0   8         2
                42.13          1.30        2.1447    7   3   6        16
                43.92          1.53        2.0613   10   6   0         8
                52.00          1.41        1.7585   13   4   1        16
                52.33          1.60        1.7483    9   4   7        16
                53.60          1.09        1.7100    9   7   6        16
                53.64          1.31        1.7088   10   9   3        16
                64.53          1.07        1.4442   13   4   7        16
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.