Ca0.40H1.20Nb2O6*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 0013040

      CELL PARAMETERS:   10.5120  10.5120  10.5120   90.000   90.000   90.000
      SPACE GROUP: Fd3m      
      X-RAY WAVELENGTH:     1.541838
      Cell Volume:   1161.599
      Density (g/cm3):      3.650
      MAX. ABS. INTENSITY / VOLUME**2:      77.14886789    
      RIR:      6.882
      RIR based on corundum from Acta Crystallographica A38 (1982) 733-739
               2-THETA      INTENSITY    D-SPACING   H   K   L   Multiplicity
                14.60        100.00        6.0691    1   1   1         8
                23.94          1.12        3.7166    2   2   0        12
                28.15         34.89        3.1695    3   1   1        24
                29.43         90.71        3.0346    2   2   2         8
                34.12         22.77        2.6280    4   0   0         6
                37.29          4.88        2.4116    3   3   1        24
                42.11          2.94        2.1458    4   2   2        24
                44.80          2.60        2.0230    5   1   1        24
                44.80          8.22        2.0230    3   3   3         8
                49.02         36.12        1.8583    4   4   0        12
                51.43         13.17        1.7769    5   3   1        48
                57.49          5.36        1.6031    5   3   3        24
                58.22         30.81        1.5847    6   2   2        24
                61.07          8.32        1.5173    4   4   4         8
                63.17          5.91        1.4720    5   5   1        24
                63.17          3.07        1.4720    7   1   1        24
                68.57          6.02        1.3685    7   3   1        48
                68.57          1.40        1.3685    5   5   3        24
                71.85          4.32        1.3140    8   0   0         6
                78.86          2.05        1.2138    7   5   1        48
                79.48         10.37        1.2058    6   6   2        24
                81.98          9.32        1.1753    8   4   0        24
                83.85          1.34        1.1538    9   1   1        24
                83.85          2.02        1.1538    7   5   3        48
                88.79          2.50        1.1020    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.