Tantalaeschynite-(Eu)
      Jacobsen H, Lissner F, Manek E, Meyer G
      Zeitschrift fur Kristallographie 211 (1996) 547-548
      Crystal structures of dieuropium(II) ditantalum heptoxide,
      Eu2Ta2O7 and europium(II) ditantalum hexoxide, EuTa2O6
      Locality: Synthetic
      _database_code_amcsd 0018933

      CELL PARAMETERS:   11.0200   7.6400   5.6100   90.000   90.000   90.000
      SPACE GROUP: Pnma      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:    472.322
      Density (g/cm3):      8.575
      MAX. ABS. INTENSITY / VOLUME**2:      234.1325841    
      RIR:      8.890
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                16.09          2.46        5.5100    2   0   0         2
                17.74         13.28        4.9995    1   0   1         4
                19.63          1.89        4.5219    0   1   1         4
                19.87          4.87        4.4690    2   1   0         4
                21.24          3.85        4.1834    1   1   1         8
                22.62          4.71        3.9310    2   0   1         4
                23.29         20.73        3.8200    0   2   0         2
                25.48          1.11        3.4955    2   1   1         8
                28.43         18.71        3.1393    2   2   0         4
                29.06         78.37        3.0731    3   0   1         4
                29.43        100.00        3.0354    1   2   1         8
                31.37          7.20        2.8511    3   1   1         8
                31.90         31.20        2.8050    0   0   2         2
                32.50          8.60        2.7550    4   0   0         2
                32.69          5.16        2.7396    2   2   1         8
                32.95          4.36        2.7183    1   0   2         4
                34.61          3.50        2.5916    4   1   0         4
                35.04          1.36        2.5610    1   1   2         8
                36.33          2.63        2.4729    4   0   1         4
                37.56         12.84        2.3945    3   2   1         8
                37.87          2.40        2.3758    2   1   2         8
                38.83          1.38        2.3189    0   3   1         4
                38.96          1.74        2.3117    2   3   0         4
                39.87          3.99        2.2609    0   2   2         4
                40.36         20.45        2.2345    4   2   0         4
                40.46          3.82        2.2294    3   0   2         4
                40.74          2.14        2.2148    1   2   2         8
                42.23          1.93        2.1401    3   1   2         8
                43.25         11.83        2.0917    2   2   2         8
                44.15          3.05        2.0514    5   0   1         4
                45.80          4.70        1.9812    5   1   1         8
                46.19          7.75        1.9655    4   0   2         4
                46.30          2.25        1.9609    3   3   1         8
                47.61         17.35        1.9100    0   4   0         2
                47.78          2.74        1.9035    4   1   2         8
                48.69          1.89        1.8701    4   3   0         4
                49.64          2.96        1.8367    6   0   0         2
                50.23          1.31        1.8164    0   1   3         4
                51.15          2.26        1.7858    6   1   0         4
                51.20          1.62        1.7842    1   4   1         8
                51.21          1.69        1.7839    2   3   2         8
                51.62          3.22        1.7708    2   0   3         4
                52.35         22.62        1.7477    4   2   2         8
                52.42          1.03        1.7455    6   0   1         4
                52.83          1.10        1.7330    5   0   2         4
                53.09          1.27        1.7251    2   1   3         8
                55.11          8.55        1.6665    3   0   3         4
                55.33          9.99        1.6604    1   2   3         8
                55.52          2.99        1.6553    6   2   0         4
                56.75         22.93        1.6222    3   4   1         8
                57.35         10.18        1.6066    2   2   3         8
                57.71          3.00        1.5975    5   3   1         8
                58.46         11.07        1.5787    0   4   2         4
                58.48          6.29        1.5782    5   2   2         8
                58.83          3.60        1.5697    4   4   0         4
                59.11          2.17        1.5628    1   4   2         8
                59.77          1.64        1.5472    4   0   3         4
                60.23          2.03        1.5366    6   0   2         4
                60.62          3.59        1.5275    3   2   3         8
                61.14          8.49        1.5157    7   0   1         4
                61.56          1.54        1.5064    6   1   2         8
                62.47          1.63        1.4868    7   1   1         8
                64.21          1.40        1.4505    3   4   2         8
                65.47          2.34        1.4256    6   2   2         8
                66.35          7.81        1.4089    7   2   1         8
                66.69          1.50        1.4025    0   0   4         2
                66.94          1.34        1.3979    5   4   1         8
                67.30          2.43        1.3913    1   0   4         4
                68.50          3.96        1.3698    4   4   2         8
                71.23          1.76        1.3239    6   4   0         4
                72.08          1.90        1.3103    6   0   3         4
                72.08          1.22        1.3102    3   0   4         4
                72.27          2.72        1.3073    1   2   4         8
                72.84          1.98        1.2986    2   4   3         8
                73.01          2.16        1.2958    8   2   0         4
                75.75          5.51        1.2557    3   4   3         8
                76.58          1.06        1.2442    5   3   3         8
                77.33          5.48        1.2339    1   6   1         8
                79.60          1.60        1.2043    7   0   3         4
                79.77          1.28        1.2023    4   4   3         8
                80.17          1.71        1.1972    6   4   2         8
                80.93          2.29        1.1879    4   2   4         8
                80.98          6.47        1.1873    7   4   1         8
                81.89          2.57        1.1764    8   2   2         8
                81.89          1.59        1.1764    3   6   1         8
                83.67          2.71        1.1558    4   6   0         4
                84.32          2.02        1.1486    7   2   3         8
                84.95          1.01        1.1416    9   2   1         8
                85.60          1.16        1.1346    2   6   2         8
                85.99          1.47        1.1305    0   4   4         4
                86.01          5.46        1.1303    5   2   4         8
                86.55          2.20        1.1246    1   4   4         8
                88.78          1.53        1.1020   10   0   0         2
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       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.