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 Moore, Sen Gupta, Schlemper
      _database_code_amcsd 0001129

      CELL PARAMETERS:   23.9940  23.9940  17.5120   90.000   90.000   90.000
      SPACE GROUP: I4/mmm    
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:  10081.868
      Density (g/cm3):      2.533
      MAX. ABS. INTENSITY / VOLUME**2:      48.52402875    
      RIR:      6.237
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 5.21        100.00       16.9663    1   1   0         4
                 6.25         22.71       14.1452    1   0   1         8
                 7.37         40.35       11.9970    2   0   0         4
                10.10          2.04        8.7560    0   0   2         2
                10.43          4.80        8.4832    2   2   0         4
                11.66          7.49        7.5876    3   1   0         8
                12.52         10.33        7.0726    2   0   2         8
                14.54          6.45        6.0927    2   2   2         8
                14.77          4.81        5.9985    4   0   0         4
                15.67          1.59        5.6554    3   3   0         4
                16.52          4.45        5.3652    4   2   0         8
                18.82          1.30        4.7151    3   0   3         8
                19.18          1.38        4.6282    5   0   1         8
                20.24          1.34        4.3883    3   2   3        16
                20.28          2.35        4.3780    0   0   4         2
                20.94          2.12        4.2416    4   4   0         4
                21.56          1.37        4.1213    4   1   3        16
                22.23          1.02        3.9990    6   0   0         4
                23.30          1.93        3.8173    4   4   2         8
                24.29          3.09        3.6643    5   4   1        16
                24.47          1.12        3.6376    6   0   2         8
                25.14          2.65        3.5417    5   2   3        16
                25.18          4.32        3.5363    4   0   4         8
                25.59          1.84        3.4811    6   2   2        16
                26.26          1.81        3.3933    7   1   0         8
                27.29          1.31        3.2683    6   1   3        16
                27.83          3.44        3.2053    5   1   4        16
                28.70          6.83        3.1104    6   4   2        16
                28.81          3.13        3.0994    3   2   5        16
                29.28          2.25        3.0498    6   3   3        16
                29.79          2.14        2.9992    8   0   0         4
                30.24          4.67        2.9558    7   0   3         8
                31.09          1.40        2.8764    1   1   6         8
                31.63          1.20        2.8290    5   0   5         8
                31.63          3.00        2.8290    4   3   5        16
                32.88          1.30        2.7241    3   1   6        16
                33.40          4.94        2.6826    8   4   0         8
                33.41          3.07        2.6820    7   1   4        16
                33.84          1.44        2.6491    6   4   4        16
                35.09          1.68        2.5572    7   3   4        16
                35.47          1.16        2.5307    8   3   3        16
                35.89          1.18        2.5025    6   3   5        16
                37.07          2.72        2.4251    9   0   3         8
                39.39          1.33        2.2874    8   4   4        16
                41.24          1.36        2.1890    0   0   8         2
                42.21          1.39        2.1411    7   3   6        16
                43.31          1.25        2.0889    9   2   5        16
                44.01          1.52        2.0575   10   6   0         8
                52.11          1.65        1.7552   13   4   1        16
                52.42          1.57        1.7454    9   4   7        16
                53.70          1.13        1.7070    9   7   6        16
                53.74          1.38        1.7056   10   9   3        16
                64.65          1.15        1.4417   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.