Sklodowskite
      Ryan R R, Rosenzweig A
      Crystal Structure Communications 6 (1977) 611-615
      Sklodowskite, MgO*2UO3*2SiO2*7H2O
      Locality: Naica, Chihuahua, Mexico
      _database_code_amcsd 0012337

      CELL PARAMETERS:   17.3820   7.0470   6.6100   90.000  105.900   90.000
      SPACE GROUP: C2/m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    778.688
      Density (g/cm3):      3.673
      MAX. ABS. INTENSITY / VOLUME**2:      117.8511544    
      RIR:     10.448
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                10.58        100.00        8.3585    2   0   0         2
                13.93         10.58        6.3571    0   0   1         2
                15.02         25.16        5.8980   -2   0   1         2
                18.46         11.20        4.8055   -1   1   1         4
                19.73          5.05        4.5006    2   0   1         2
                20.57         24.48        4.3187    1   1   1         4
                21.26         27.92        4.1792    4   0   0         2
                22.02          8.60        4.0365   -4   0   1         2
                22.07         11.33        4.0285   -3   1   1         4
                25.28         20.70        3.5235    0   2   0         2
                27.13          9.95        3.2870    3   1   1         4
                27.47         25.18        3.2468    2   2   0         4
                28.07          1.10        3.1786    0   0   2         2
                28.97          3.25        3.0818    0   2   1         4
                29.43          1.57        3.0350   -5   1   1         4
                29.53          4.69        3.0248   -2   2   1         4
                29.95         24.73        2.9830   -1   1   2         4
                31.03         14.03        2.8821   -3   1   2         4
                31.32          7.41        2.8556   -6   0   1         2
                32.13          5.85        2.7862    6   0   0         2
                32.27          3.05        2.7744    2   2   1         4
                32.66         12.19        2.7420    1   1   2         4
                33.26          6.72        2.6939    4   2   0         4
                33.77          5.83        2.6544   -4   2   1         4
                35.57          4.46        2.5236   -5   1   2         4
                35.94          3.50        2.4991    5   1   1         4
                38.43          6.95        2.3424    3   1   2         4
                38.64          2.32        2.3304   -7   1   1         4
                39.86          1.12        2.2618    7   1   0         4
                40.67          2.91        2.2185   -6   2   1         4
                40.80          3.40        2.2119   -1   3   1         4
                40.97          2.59        2.2028   -2   0   3         2
                41.31          5.88        2.1855    6   2   0         4
                41.63          2.28        2.1692   -8   0   1         2
                41.86          5.79        2.1581    1   3   1         4
                42.20          1.42        2.1413   -4   0   3         2
                42.63          3.40        2.1211   -7   1   2         4
                42.67          3.54        2.1190    0   0   3         2
                42.67          2.53        2.1190   -3   3   1         4
                43.26          2.15        2.0913   -3   1   3         4
                43.30          4.08        2.0896    8   0   0         2
                43.49          1.95        2.0809   -1   1   3         4
                45.69          3.52        1.9856    3   3   1         4
                45.82          2.67        1.9805   -5   1   3         4
                45.95          3.18        1.9752    7   1   1         4
                46.17          1.21        1.9660   -6   0   3         2
                46.31          4.23        1.9607    5   1   2         4
                46.47          1.29        1.9541    1   1   3         4
                47.04          1.86        1.9318    2   0   3         2
                47.20          1.27        1.9257   -5   3   1         4
                47.55          9.23        1.9122   -1   3   2         4
                48.29          4.37        1.8848   -3   3   2         4
                48.75          1.27        1.8678   -2   2   3         4
                49.33          2.73        1.8472   -8   2   1         4
                49.43          3.58        1.8440    1   3   2         4
                49.83          1.49        1.8299   -4   2   3         4
                50.24          3.36        1.8159    0   2   3         4
                50.80          3.19        1.7973    8   2   0         4
                50.83          2.95        1.7963   -7   1   3         4
                51.38          2.97        1.7785   -9   1   2         4
                51.55          3.16        1.7730   -5   3   2         4
                51.82          2.55        1.7644    5   3   1         4
                51.90          3.20        1.7617    0   4   0         2
                52.66          3.15        1.7381  -10   0   1         2
                53.13          3.16        1.7239    2   4   0         4
                53.58          1.12        1.7104    4   0   3         2
                53.71          3.70        1.7066    3   3   2         4
                54.14          1.59        1.6939    2   2   3         4
                54.35          1.17        1.6881   -2   4   1         4
                54.92          1.00        1.6717   10   0   0         2
                55.65          2.50        1.6515    7   1   2         4
                55.85          1.81        1.6463   -2   0   4         2
                55.99          1.16        1.6425   -4   0   4         2
                56.70          2.25        1.6234    4   4   0         4
                56.84          3.23        1.6198    9   1   1         4
                57.02          1.92        1.6151   -7   3   2         4
                57.04          1.10        1.6147   -4   4   1         4
                57.54          1.05        1.6018   -3   3   3         4
                57.84          1.87        1.5942   -9   1   3         4
                59.28          2.52        1.5588  -10   2   1         4
                59.74          1.75        1.5478    7   3   1         4
                60.05          1.64        1.5408    5   3   2         4
                60.14          1.17        1.5387    4   2   3         4
                61.38          1.28        1.5103   10   2   0         4
                61.41          1.04        1.5098  -11   1   2         4
                61.88          1.22        1.4994   -6   4   1         4
                62.25          2.05        1.4915   -2   2   4         4
                62.36          1.47        1.4890    6   4   0         4
                62.38          1.69        1.4887   -4   2   4         4
                63.89          1.77        1.4571   -7   3   3         4
                64.30          1.54        1.4487    0   2   4         4
                64.36          1.96        1.4475   -9   3   2         4
                64.68          1.05        1.4411   -6   2   4         4
                66.20          1.15        1.4117    9   1   2         4
                66.49          1.69        1.4063  -11   1   3         4
                67.91          1.27        1.3803    6   2   3         4
                68.12          1.43        1.3766    7   3   2         4
                68.43          1.27        1.3710    2   2   4         4
                68.62          1.30        1.3677   11   1   1         4
                69.18          2.20        1.3580    9   3   1         4
                69.37          1.10        1.3547    0   4   3         4
                69.83          1.29        1.3469    8   4   0         4
                70.07          1.02        1.3428   -9   3   3         4
                70.37          1.29        1.3379  -12   2   1         4
                73.02          1.45        1.2957   -1   5   2         4
                73.59          1.04        1.2871   -3   5   2         4
                74.49          1.05        1.2738    1   5   2         4
                77.08          1.24        1.2373  -10   4   1         4
                77.28          1.31        1.2347    8   2   3         4
                78.03          1.28        1.2246  -11   3   3         4
                79.72          1.02        1.2028   -2   4   4         4
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.