Ba0.50HNb2O6*H2O
      Groult D, Michel C, Raveau B
      Journal of Inorganic and Nuclear Chemistry 37 (1975) 2203-2205
      Sur de nouveaux pyrochlores lacunaires d'ions bivalents synthetises par
      echanges d'ions
      Locality: synthetic
      _database_code_amcsd 0013044

      CELL PARAMETERS:   10.6070  10.6070  10.6070   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   1193.377
      Density (g/cm3):      4.137
      MAX. ABS. INTENSITY / VOLUME**2:      98.53290991    
      RIR:      7.756
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                14.46         49.57        6.1240    1   1   1         8
                27.90         12.50        3.1981    3   1   1        24
                29.16        100.00        3.0620    2   2   2         8
                33.80         30.33        2.6518    4   0   0         6
                41.72          2.50        2.1651    4   2   2        24
                44.38          4.54        2.0413    3   3   3         8
                48.55         36.20        1.8751    4   4   0        12
                50.93          4.88        1.7929    5   3   1        48
                56.93          2.55        1.6176    5   3   3        24
                57.65         34.63        1.5991    6   2   2        24
                60.47         10.44        1.5310    4   4   4         8
                62.54          2.75        1.4853    5   5   1        24
                62.54          1.50        1.4853    7   1   1        24
                67.87          2.28        1.3809    7   3   1        48
                71.10          4.77        1.3259    8   0   0         6
                78.63         11.63        1.2167    6   6   2        24
                81.09         10.70        1.1859    8   4   0        24
                87.79          1.24        1.1119    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.