Nb30 O90 Rb12 W3
      Michel C, Guyomarch A, Raveau B
      Journal of Solid State Chemistry 22 (1977) 393-403
      Nouveaux echangeurs cationiques avec une structure a tunnels
      entrecroises: les oxides  A12M33O90 et A12M33O90(H2O)12
      _cod_database_code 1001017
      _database_code_amcsd 0013353

      CELL PARAMETERS:    7.4860   7.4860  43.1000   90.000   90.000  120.000
      SPACE GROUP: R-3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   2091.739
      Density (g/cm3):      4.607
      MAX. ABS. INTENSITY / VOLUME**2:      61.69742661    
      RIR:      4.360
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                 6.15         14.35       14.3667    0   0   3         2
                12.32         25.08        7.1833    0   0   6         2
                13.81         27.13        6.4109    1   0   1         6
                14.27          5.93        6.2082    0   1   2         6
                15.95         11.43        5.5551    1   0   4         6
                18.53          5.26        4.7889    0   0   9         2
                21.45          3.96        4.1435    0   1   8         6
                23.77          3.29        3.7430    1   1   0         6
                24.58          9.65        3.6221    1   1   3        12
                24.81         11.50        3.5892    1   0  10         6
                26.58         48.07        3.3533    0   1  11         6
                26.86         53.53        3.3194    1   1   6        12
                27.60         24.06        3.2324    0   2   1         6
                27.83          1.57        3.2055    2   0   2         6
                28.76         19.71        3.1041    0   2   4         6
                29.44        100.00        3.0341    2   0   5         6
                30.28          1.92        2.9518    1   0  13         6
                30.31         12.08        2.9491    1   1   9        12
                31.13         16.58        2.8733    0   0  15         2
                31.18          5.33        2.8683    0   2   7         6
                32.19          7.25        2.7810    0   1  14         6
                34.62         13.87        2.5906    0   2  10         6
                36.11          2.87        2.4876    1   0  16         6
                39.54          6.19        2.2792    1   1  15        12
                42.21          1.65        2.1411    1   0  19         6
                42.29          1.24        2.1370    3   0   3         6
                43.56         10.92        2.0775    1   2  11        12
                43.69          2.15        2.0718    0   2  16         6
                43.74          3.51        2.0694    0   3   6         6
                43.74         11.75        2.0694    3   0   6         6
                44.13         10.49        2.0524    0   0  21         2
                44.94          3.20        2.0170    1   1  18        12
                45.42          1.57        1.9970    2   0  17         6
                46.08          3.49        1.9698    3   0   9         6
                47.42          5.28        1.9172    1   2  14        12
                48.55          1.58        1.8753    1   0  22         6
                48.65         40.03        1.8715    2   2   0         6
                50.34          4.54        1.8126    2   1  16        12
                50.39          2.36        1.8110    2   2   6        12
                50.82          1.33        1.7965    1   3   1        12
                50.88         19.93        1.7946    2   0  20         6
                51.89          3.05        1.7619    1   2  17        12
                52.50          1.01        1.7431    2   2   9        12
                53.02          1.28        1.7271    0   3  15         6
                53.02          1.25        1.7271    3   0  15         6
                54.75          1.26        1.6767    0   2  22         6
                55.18          1.93        1.6646    2   1  19        12
                55.36          4.09        1.6595    1   3  10        12
                56.29         10.69        1.6342    3   1  11        12
                56.85          3.36        1.6196    4   0   1         6
                57.37          1.04        1.6060    0   1  26         6
                57.50          2.28        1.6027    4   0   4         6
                57.89         12.98        1.5929    0   4   5         6
                58.89         12.86        1.5682    2   2  15        12
                59.54          3.27        1.5526    3   1  14        12
                60.51          1.63        1.5302    2   1  22        12
                60.86         10.94        1.5221    0   2  25         6
                61.08          5.48        1.5170    4   0  10         6
                62.06          2.83        1.4955    1   3  16        12
                62.48          1.19        1.4864    3   2   1        12
                62.98          5.68        1.4759    2   0  26         6
                63.42          1.31        1.4667    3   1  17        12
                64.91          2.31        1.4367    0   0  30         2
                66.50          1.45        1.4060    3   2  10        12
                67.34          6.07        1.3905    2   3  11        12
                67.34          1.06        1.3905    0   2  28         6
                67.48          2.99        1.3881    1   4   6        12
                67.48          2.59        1.3881    4   1   6        12
                67.76          9.12        1.3829    2   2  21        12
                69.10          1.33        1.3594    1   0  31         6
                69.25          1.22        1.3568    1   4   9        12
                70.29          1.09        1.3392    2   3  14        12
                73.05          6.39        1.2953    0   4  20         6
                78.92          2.99        1.2130    4   2   5        12
                79.22          1.37        1.2092    2   1  31        12
                81.51          4.18        1.1809    4   0  25         6
                81.71          1.25        1.1785    2   4  10        12
                83.40          1.78        1.1589    0   4  26         6
                84.09          2.07        1.1512    2   0  35         6
                85.07          2.09        1.1403    1   1  36        12
                85.14          5.13        1.1396    2   2  30        12
                89.00          1.90        1.0999    1   3  31        12
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.