Richterite
      Yang H, Konzett J, Prewitt C T, Fei Y
      American Mineralogist 84 (1999) 681-684
      Single-crystal structure refinement of synthetic K-substituted potassic
      richterite, K(KCa)Mg5Si8O22(OH)2
      _database_code_amcsd 0002223

      CELL PARAMETERS:   10.1926  18.1209   5.2736   90.000  105.514   90.000
      SPACE GROUP: C2/m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    938.540
      Density (g/cm3):      3.147
      MAX. ABS. INTENSITY / VOLUME**2:      6.320481778    
      RIR:      0.654
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 9.76          2.72        9.0604    0   2   0         2
                17.23          4.13        5.1451    1   3   0         4
                17.45          2.88        5.0815    0   0   1         2
                19.60          4.38        4.5302    0   4   0         2
                20.03          4.29        4.4320    0   2   1         4
                20.57          1.52        4.3173    2   2   0         4
                21.54          1.73        4.1254   -2   0   1         2
                22.29         26.63        3.9885    1   1   1         4
                22.81          1.22        3.8989   -1   3   1         4
                23.70         17.97        3.7545   -2   2   1         4
                26.21         11.75        3.4001    1   5   0         4
                26.32        100.00        3.3860    1   3   1         4
                26.36          7.62        3.3815    0   4   1         4
                26.77         82.71        3.3297    2   4   0         4
                27.69         22.58        3.2216    3   1   0         4
                28.64         17.39        3.1171   -3   1   1         4
                29.28          3.35        3.0502   -2   4   1         4
                29.58          1.71        3.0201    0   6   0         2
                30.15         67.05        2.9641    2   2   1         4
                30.24         18.46        2.9551   -1   5   1         4
                31.07         21.67        2.8782    3   3   0         4
                31.93         56.96        2.8029   -3   3   1         4
                33.03         61.20        2.7121    1   5   1         4
                34.37          5.29        2.6092   -1   1   2         4
                34.55         50.15        2.5962    0   6   1         4
                34.79          2.66        2.5789    2   4   1         4
                34.88          3.74        2.5725    2   6   0         4
                35.16         70.75        2.5523   -2   0   2         2
                35.33          2.10        2.5407    0   0   2         2
                35.87          1.41        2.5032    1   7   0         4
                36.60          7.66        2.4553    4   0   0         2
                36.88          1.37        2.4369   -2   6   1         4
                37.00         19.86        2.4294    3   5   0         4
                37.51         27.30        2.3979   -4   2   1         4
                37.74         14.92        2.3836   -3   5   1         4
                38.94          8.31        2.3128   -3   1   2         4
                39.01         32.67        2.3088   -1   7   1         4
                39.44          5.51        2.2846    3   3   1         4
                39.80          2.13        2.2651    0   8   0         2
                40.57         18.65        2.2237   -2   4   2         4
                40.72          5.83        2.2160    0   4   2         4
                41.42          1.33        2.1798   -4   4   1         4
                41.51         38.76        2.1756    2   6   1         4
                41.51          9.18        2.1754   -3   3   2         4
                41.85          1.58        2.1586    4   4   0         4
                42.39         11.99        2.1321   -1   5   2         4
                43.76          1.45        2.0689    0   8   1         4
                43.89         14.84        2.0627   -4   0   2         2
                44.02          1.72        2.0568    2   8   0         4
                44.31         20.74        2.0444    2   0   2         2
                44.41          5.02        2.0399    3   5   1         4
                44.62          1.05        2.0306    3   7   0         4
                45.69          1.49        1.9855   -2   8   1         4
                46.01         11.41        1.9724    1   9   0         4
                46.30          9.33        1.9610   -3   5   2         4
                46.50         17.04        1.9528    5   1   0         4
                46.59          1.22        1.9494   -2   6   2         4
                47.36         10.87        1.9197   -4   6   1         4
                47.39          1.62        1.9184   -5   3   1         4
                48.49          3.62        1.8773   -4   4   2         4
                48.61          4.08        1.8730   -1   9   1         4
                48.75          1.37        1.8680    5   3   0         4
                49.62          1.24        1.8374    4   4   1         4
                49.64          1.35        1.8364    2   8   1         4
                50.36          7.37        1.8121    0  10   0         2
                50.53          3.82        1.8063    1   9   1         4
                51.14          1.14        1.7862    3   7   1         4
                51.33          2.68        1.7801    3   1   2         4
                52.56          1.60        1.7413   -1   1   3         4
                53.03          1.45        1.7269    5   5   0         4
                53.08          1.51        1.7253    1   7   2         4
                53.93          3.39        1.7000    2  10   0         4
                53.98          3.61        1.6987   -3   9   1         4
                54.14          2.15        1.6942   -2   8   2         4
                54.25          1.93        1.6908    0   8   2         4
                54.62          9.20        1.6803   -1   3   3         4
                54.86         27.04        1.6734    4   6   1         4
                55.16         11.42        1.6650    0   2   3         4
                55.17          3.72        1.6649    4   8   0         4
                56.19          4.01        1.6369    6   0   0         2
                56.29          1.30        1.6342   -2   4   3         4
                56.66          5.50        1.6247    1  11   0         4
                56.66          1.32        1.6245    5   3   1         4
                57.45          1.69        1.6040    3   5   2         4
                57.84          5.62        1.5941   -5   7   1         4
                58.32         15.32        1.5821   -6   0   2         2
                58.59         12.03        1.5754   -1   5   3         4
                58.85          2.23        1.5691    2  10   1         4
                58.88          5.23        1.5684    4   0   2         2
                60.10          1.58        1.5395    6   4   0         4
                60.55          3.99        1.5292    5   5   1         4
                60.60          1.15        1.5280    1  11   1         4
                60.73          4.93        1.5251   -4   8   2         4
                60.78          3.31        1.5240   -3   9   2         4
                61.00          6.75        1.5190    1   9   2         4
                61.15         26.41        1.5156   -2   6   3         4
                61.40         11.05        1.5101    0  12   0         2
                62.15          1.00        1.4936   -6   4   2         4
                62.69          5.97        1.4821    4   4   2         4
                62.84         23.86        1.4788   -6   6   1         4
                62.90          3.41        1.4776   -2  10   2         4
                62.91          1.29        1.4773    0   6   3         4
                63.01          1.55        1.4753    0  10   2         4
                63.19          1.33        1.4715    3  11   0         4
                63.53          1.35        1.4645   -4  10   1         4
                63.69          2.87        1.4612   -3  11   1         4
                63.84          3.81        1.4580    4  10   0         4
                64.14          3.91        1.4519   -5   3   3         4
                64.36          1.44        1.4475    0  12   1         4
                65.20          2.75        1.4308    6   2   1         4
                65.66          1.20        1.4219   -3   7   3         4
                65.86          1.84        1.4181   -2  12   1         4
                66.00          2.19        1.4155   -7   3   1         4
                67.77          2.60        1.3827   -5   5   3         4
                67.87          7.94        1.3810    5   1   2         4
                68.68          1.59        1.3666    7   3   0         4
                68.98          2.09        1.3614   -4  10   2         4
                69.04          1.37        1.3605    1   7   3         4
                69.09          1.53        1.3596   -6   2   3         4
                69.29          2.85        1.3561    2  10   2         4
                69.58          9.18        1.3511   -7   5   1         4
                69.65          3.59        1.3500    5   3   2         4
                69.92          3.39        1.3455   -3  11   2         4
                70.00          2.80        1.3440   -5   9   2         4
                70.12          3.51        1.3421    1  11   2         4
                70.75          6.12        1.3316    2   6   3         4
                71.05          3.37        1.3267    6   8   0         4
                71.43          1.36        1.3206   -1   9   3         4
                71.51          1.48        1.3194    1  13   1         4
                72.33          1.22        1.3064    6   6   1         4
                72.43          4.09        1.3048   -3   1   4         4
                72.55          1.95        1.3030   -7   5   2         4
                72.63          4.35        1.3017   -1   1   4         4
                72.77         13.38        1.2996   -2  12   2         4
                72.87          3.47        1.2981    0  12   2         4
                73.15          1.90        1.2938    5   5   2         4
                73.65          1.83        1.2863    4  12   0         4
                74.33          4.84        1.2762   -4   0   4         2
                74.36          2.44        1.2756   -1   3   4         4
                74.72          2.20        1.2704    0   0   4         2
                75.36          1.18        1.2612   -8   2   1         4
                76.04          1.34        1.2516    2  14   0         4
                76.05          1.14        1.2515   -6   6   3         4
                77.07          1.62        1.2374    0  10   3         4
                77.22          1.76        1.2354    4   2   3         4
                77.33          1.99        1.2339    6   0   2         2
                77.45          2.54        1.2323   -1  13   2         4
                77.78          1.23        1.2279   -1   5   4         4
                77.80          3.40        1.2277    8   0   0         2
                78.63          3.18        1.2168   -5  11   2         4
                80.00          1.28        1.1993   -1  11   3         4
                80.03          4.80        1.1990   -8   4   2         4
                80.61          2.87        1.1918   -6  10   2         4
                83.43          1.44        1.1586    1  15   1         4
                83.56          5.02        1.1571    2   0   4         2
                84.09          3.48        1.1511    7   9   0         4
                85.00          1.21        1.1411    5   9   2         4
                85.21          1.41        1.1389    7   7   1         4
                85.40          1.39        1.1368    5  13   0         4
                85.87          2.81        1.1318   -7   7   3         4
                86.12          3.02        1.1291   -6   4   4         4
                86.91          1.55        1.1209    5   3   3         4
                88.44          2.43        1.1054    0  16   1         4
                89.04          1.28        1.0995    3  13   2         4
                89.78          2.47        1.0924   -6  12   2         4
                89.80          1.12        1.0921   -2  16   1         4
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.