H3.8 O7 Ta1.8 W0.2
      Hervieu M, Michel C, Raveau B
      Bulletin de la Societe Chimique de France 1971 (1971) 3939-3943
      Proprietes d'echanges d'ions de quelques oxydes ternaires de type
      pyrochlore: les pyrochlores H1+x(H2O)Ta1+xW1-xO6 et NH4TaWO6
      _cod_database_code 1001165
      _database_code_amcsd 0012103

      CELL PARAMETERS:   10.5500  10.5500  10.5500   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   1174.241
      Density (g/cm3):      5.367
      MAX. ABS. INTENSITY / VOLUME**2:      259.7881669    
      RIR:     15.761
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                14.54        100.00        6.0910    1   1   1         8
                28.05         62.54        3.1809    3   1   1        24
                29.33         62.01        3.0455    2   2   2         8
                33.99         17.89        2.6375    4   0   0         6
                37.15         13.54        2.4203    3   3   1        24
                44.63         10.21        2.0303    5   1   1        24
                44.63          8.94        2.0303    3   3   3         8
                48.83         26.82        1.8650    4   4   0        12
                51.23         17.49        1.7833    5   3   1        48
                57.26          8.02        1.6089    5   3   3        24
                57.99         23.38        1.5905    6   2   2        24
                60.83          5.94        1.5228    4   4   4         8
                62.91          6.13        1.4773    5   5   1        24
                62.91          4.17        1.4773    7   1   1        24
                68.29          8.68        1.3735    7   3   1        48
                68.29          2.97        1.3735    5   5   3        24
                71.55          3.39        1.3188    8   0   0         6
                73.47          1.37        1.2889    7   3   3        24
                78.52          3.81        1.2182    7   5   1        48
                79.14          7.90        1.2102    6   6   2        24
                81.62          6.64        1.1795    8   4   0        24
                83.48          2.80        1.1580    7   5   3        48
                83.48          1.67        1.1580    9   1   1        24
                88.38          3.51        1.1059    9   3   1        48
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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.