Volborthite
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from the powder pattern R050216
      Lafontaine M A, LeBail A, Ferey G
      Journal of Solid State Chemistry 85 (1990) 220-227
      Copper-containing minerals - I. Cu3V2O7(OH)2,2H2O: The synthetic homolog
      of volborthite; crystal structure determination from X-ray and neutron data;
      structural correlations
      Note: neutron data on a synthetic sample

      CELL PARAMETERS:   10.60806   5.873115   7.204120   90.00000   94.96362   90.00000
      SPACE GROUP: C2/m
      X-RAY WAVELENGTH:     1.541838
               2-THETA      INTENSITY    D-SPACING   H   K   L
                12.35        100.00        7.1771    0   0   1
                16.79          1.66        5.2841    2   0   0
                17.29          2.65        5.1336    1   1   0
                20.00          3.34        4.4427   -2   0   1
                20.86          7.25        4.2611   -1   1   1
                21.71          5.41        4.0948    1   1   1
                21.74          2.38        4.0896    2   0   1
                24.82          4.02        3.5886    0   0   2
                28.84         12.84        3.0958   -2   0   2
                29.57          4.11        3.0210    3   1   0
                29.77         16.39        3.0010   -1   1   2
                30.44          1.78        2.9366    0   2   0
                31.00         15.44        2.8848    1   1   2
                31.32          6.97        2.8561    2   0   2
                31.26          5.82        2.8613   -3   1   1
                32.96          3.85        2.7179    0   2   1
                33.01          4.68        2.7133    3   1   1
                33.93         10.47        2.6421    4   0   0
                34.95         17.98        2.5668    2   2   0
                35.16          9.81        2.5520   -4   0   1
                36.68          1.66        2.4498   -2   2   1
                37.46          2.30        2.4005   -3   1   2
                37.71         19.27        2.3853    2   2   1
                39.65          1.78        2.2726    0   2   2
                40.00          1.43        2.2539   -2   0   3
                40.42          2.65        2.2310    3   1   2
                40.61          4.66        2.2214   -4   0   2
                42.34          1.89        2.1344    1   1   3
                44.23          6.94        2.0474    2   2   2
                47.17          1.75        1.9263   -4   2   1
                49.10          1.04        1.8548    0   2   3
                49.10          3.68        1.8550   -4   0   3
                50.37          1.03        1.8112    3   1   3
                50.62          3.14        1.8028   -5   1   2
                50.87          4.49        1.7943    0   0   4
                51.07          6.07        1.7880   -2   2   3
                51.57          2.64        1.7716   -4   2   2
                53.42          5.70        1.7145    2   2   3
                53.66          2.41        1.7076   -1   3   2
                53.86          2.09        1.7016    4   0   3
                54.42          1.94        1.6853    1   3   2
                54.53          2.42        1.6824    5   1   2
                54.68          2.12        1.6781    4   2   2
                54.59          1.10        1.6806   -3   3   1
                59.72          2.03        1.5479   -4   0   4
                61.35          9.47        1.5105    6   2   0
                61.80          6.77        1.5005   -2   2   4
                61.79          1.89        1.5007   -6   2   1
                63.31          4.22        1.4683    0   4   0
                63.89          2.40        1.4565    6   2   1
                64.58          2.88        1.4424    2   2   4
                64.78          1.91        1.4385    0   4   1
                65.31          3.12        1.4280    4   0   4
                67.03          1.03        1.3956   -7   1   2
                68.95          1.18        1.3613   -5   3   2
                71.02          1.12        1.3266   -2   4   2
                73.79          1.78        1.2834    4   4   0
                74.30          1.08        1.2759   -2   2   5
                74.52          1.23        1.2727   -4   4   1
                79.88          1.89        1.2003   -6   2   4
                85.38          1.41        1.1363    0   4   4
                87.37          1.19        1.1155    6   2   4
                87.37          1.19        1.1155    6   2   4
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.