Mottramite
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from the powder pattern for R050521
      Cooper M A, Hawthorne F C
      The Canadian Mineralogist 33 (1995) 1119-1124
      The crystal structure of mottramite, and the nature of Cu=Zn solid solution in
      the mottramite-descloizite series

      CELL PARAMETERS:   7.691245   6.045510   9.227469   90.00000   90.00000   90.00000
      SPACE GROUP: Pnma
      X-RAY WAVELENGTH:     1.541838
               2-THETA      INTENSITY    D-SPACING   H   K   L
                17.55         63.91        5.0569    0   1   1
                19.25         13.63        4.6137    0   0   2
                21.03         36.24        4.2254    1   1   1
                22.48         22.63        3.9565    1   0   2
                23.13          3.52        3.8456    2   0   0
                25.09         25.43        3.5497    2   0   1
                26.93         16.49        3.3105    1   1   2
                27.49        100.00        3.2448    2   1   0
                29.55         26.97        3.0228    0   2   0
                30.25          6.12        2.9540    2   0   2
                31.32         56.66        2.8559    1   0   3
                33.29         42.91        2.6910    1   2   1
                33.77         42.54        2.6541    2   1   2
                34.73         56.82        2.5823    1   1   3
                35.50         22.01        2.5284    0   2   2
                36.36          9.92        2.4702    3   0   1
                37.43          1.89        2.4020    2   0   3
                37.43          6.74        2.4020    1   2   2
                37.85          5.64        2.3765    2   2   0
                39.13         37.06        2.3014    2   2   1
                39.39          2.05        2.2867    3   1   1
                40.23          5.92        2.2410    3   0   2
                40.83         11.31        2.2096    1   0   4
                42.79          3.28        2.1127    2   2   2
                43.03         12.30        2.1013    3   1   2
                43.60         10.95        2.0753    1   1   4
                43.59         12.35        2.0759    1   2   3
                45.86          2.04        1.9782    2   0   4
                46.07          4.53        1.9693    3   0   3
                46.09          5.86        1.9688    0   3   1
                47.26          7.35        1.9228    4   0   0
                47.66          3.89        1.9073    1   3   1
                48.39          1.63        1.8801    2   1   4
                48.60         14.50        1.8725    3   1   3
                49.70          6.68        1.8338    0   2   4
                50.69          3.11        1.8002    3   2   2
                50.83          2.79        1.7957    1   3   2
                51.19          6.13        1.7838    1   2   4
                50.78         10.05        1.7973    4   1   1
                51.15         15.08        1.7849    2   3   0
                51.77          4.97        1.7651    0   1   5
                51.47         13.72        1.7748    4   0   2
                53.22          7.62        1.7204    1   1   5
                53.41          1.86        1.7148    3   0   4
                55.18          2.99        1.6638    2   0   5
                55.15          8.49        1.6647    2   3   2
                55.49          1.53        1.6553    2   2   4
                55.69          5.14        1.6498    3   1   4
                55.68         27.67        1.6501    3   2   3
                55.81         12.61        1.6465    1   3   3
                56.71         15.02        1.6224    4   2   0
                59.91         12.88        1.5431    1   2   5
                60.14          4.85        1.5379    0   0   6
                61.31          9.73        1.5114    0   4   0
                61.04          2.30        1.5173    5   0   1
                61.92          5.83        1.4978    3   0   5
                61.89          3.52        1.4984    3   3   2
                62.33          3.00        1.4889    1   3   4
                62.89          1.56        1.4770    4   0   4
                63.15          1.82        1.4717    5   1   1
                63.83          3.25        1.4576    2   2   5
                64.01          4.34        1.4538    3   1   5
                63.74          1.36        1.4593    5   0   2
                66.15          1.90        1.4119    1   4   2
                66.33          5.02        1.4085    3   3   3
                67.34          9.95        1.3897    2   1   6
                67.30          3.01        1.3906    2   4   1
                68.41          1.33        1.3707    0   2   6
                68.13          3.86        1.3756    4   3   1
                68.96          1.78        1.3610    0   3   5
                70.08          1.87        1.3421    3   2   5
                70.19          2.95        1.3402    1   3   5
                70.11          6.59        1.3415    5   1   3
                70.45          8.01        1.3358    1   4   3
                71.79          1.46        1.3142    5   2   2
                72.31          2.03        1.3060    3   3   4
                72.68          2.27        1.3003    4   1   5
                73.49          2.29        1.2879    0   1   7
                73.40          2.12        1.2892    3   4   1
                74.03          1.77        1.2798    5   0   4
                76.32          1.44        1.2470    2   0   7
                75.89          1.23        1.2530    3   4   2
                76.29          2.40        1.2475    1   4   4
                75.95          6.00        1.2522    5   2   3
                75.82          4.70        1.2540    6   1   0
                79.09          1.86        1.2101    6   1   2
                79.72          2.01        1.2021    3   3   5
                79.81          1.30        1.2010    4   0   6
                79.97          1.48        1.1990    3   4   3
                80.84          2.19        1.1882    4   4   0
                81.39          1.06        1.1816    5   0   5
                81.65          1.98        1.1785    5   2   4
                82.80          4.80        1.1651    2   3   6
                82.32          2.00        1.1706    6   2   1
                83.27          1.85        1.1597    5   1   5
                83.88          2.67        1.1527    2   2   7
                83.82          2.89        1.1534    2   5   0
                84.07          4.58        1.1507    4   4   2
                85.39          3.45        1.1362    5   3   3
                87.05          1.32        1.1187    2   4   5
                87.30          6.18        1.1161    4   2   6
                87.03          1.91        1.1190    2   5   2
                87.57          2.52        1.1134    1   5   3
                87.82          1.25        1.1109    4   3   5
                88.60          1.26        1.1032    0   3   7
                90.29          3.17        1.0868    2   1   8
                90.29          3.17        1.0868    2   1   8
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.