Beudantite
Diffraction data computed using the structure from the paper listed below, 
along with the cell parameters refined from single crystal data of R070190
      Szymanski J T
      The Canadian Mineralogist 26 (1988) 923-932
      The crystal structure of beudantite, Pb(Fe,Al)3((As,S)O4)2(OH)6

      CELL PARAMETERS:   7.3230  7.3230 17.0250   90.000   90.000  120.000
      SPACE GROUP: R-3m      

           ATOM        X         Y         Z     OCCUPANCY  ISO(B)
            Pb     0.03830   0.00000   0.00000     0.167     1.717
            As     0.00000   0.00000   0.31490     0.535     0.724
            S      0.00000   0.00000   0.31490     0.465     0.724
            Fe     0.00000   0.50000   0.50000     0.847     0.661
            Al     0.00000   0.50000   0.50000     0.153     0.661
            O      0.00000   0.00000   0.40680     1.000     2.129
            O      0.21450   0.42900  -0.05320     1.000     1.410
            O      0.12540   0.25080   0.13430     1.000     0.957

            X-RAY WAVELENGTH:     1.541838
            BOUNDS ON TWO THETA:    0.0  90.0
            LIMITS IMPOSED ON THE INDICES ARE:  +/-  5 +/-  5 +/- 15
            MAX. ABS. INTENSITY / VOLUME**2:      81.57742267    
            The INTENSITY cut off value is   1.00

               2-THETA      INTENSITY    D-SPACING   H   K   L
                14.91         74.89        5.9430    1   0   1
                15.61          7.61        5.6750    0   0   3
                17.44          1.44        5.0857    0   1   2
                24.31         40.15        3.6615    1   1   0
                25.20          6.74        3.5341    1   0   4
                28.64          2.72        3.1173    0   2   1
                29.02        100.00        3.0767    1   1   3
                29.78          3.10        3.0000    0   1   5
                30.07         16.70        2.9715    2   0   2
                31.53         17.09        2.8375    0   0   6
                35.30         16.50        2.5428    0   2   4
                37.91          8.04        2.3736    2   1   1
                39.04          7.20        2.3073    1   2   2
                39.69         23.47        2.2709    1   0   7
                40.21         10.76        2.2429    1   1   6
                42.78          3.34        2.1140    3   0   0
                43.32          4.37        2.0886    2   1   4
                45.80         19.85        1.9810    0   3   3
                45.80          5.61        1.9810    3   0   3
                46.32          3.28        1.9600    1   2   5
                49.81         19.03        1.8307    2   2   0
                51.73          3.47        1.7671    2   0   8
                52.29          2.01        1.7496    1   3   1
                53.69          5.84        1.7072    2   1   7
                54.10          1.77        1.6952    0   3   6
                54.10          1.82        1.6952    3   0   6
                54.61          9.13        1.6806    1   1   9
                55.92          2.09        1.6443    1   0  10
                59.12          2.53        1.5627    3   1   5
                59.29          2.92        1.5587    0   4   2
                60.15         11.68        1.5383    2   2   6
                61.86          9.98        1.5000    0   2  10
                62.51          3.01        1.4857    4   0   4
                64.25          1.48        1.4496    3   2   1
                65.49          3.41        1.4253    1   3   7
                66.31          3.56        1.4097    0   3   9
                66.31          1.38        1.4097    3   0   9
                67.48          1.17        1.3880    2   1  10
                67.70          2.28        1.3839    4   1   0
                69.97          3.24        1.3445    1   4   3
                69.97          4.68        1.3445    4   1   3
                71.29          1.38        1.3229    1   1  12
                73.89          1.93        1.2826    1   0  13
                76.26          3.70        1.2486    3   2   7
                78.13          1.64        1.2233    1   3  10
                83.28          1.87        1.1603    4   0  10
                84.26          2.90        1.1493    2   1  13
                86.86          2.35        1.1214    2   2  12
                87.29          1.40        1.1169    4   1   9
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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.