Beudantite
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from single crystal data of R060985
      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:   7.2500  7.2500 16.9700   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:      83.56067367    
            The INTENSITY cut off value is   1.00

               2-THETA      INTENSITY    D-SPACING   H   K   L
                15.05         75.03        5.8886    1   0   1
                15.67          7.73        5.6567    0   0   3
                17.57          1.45        5.0471    0   1   2
                24.56         40.00        3.6250    1   1   0
                25.34          6.81        3.5153    1   0   4
                28.92          2.70        3.0870    0   2   1
                29.26        100.00        3.0521    1   1   3
                29.93          3.14        2.9857    0   1   5
                30.36         16.66        2.9443    2   0   2
                31.63         17.32        2.8283    0   0   6
                35.58         16.51        2.5236    0   2   4
                38.30          7.99        2.3503    2   1   1
                39.43          7.11        2.2854    1   2   2
                39.86         23.67        2.2616    1   0   7
                40.45         10.82        2.2299    1   1   6
                43.23          3.32        2.0929    3   0   0
                43.71          4.34        2.0711    2   1   4
                46.25         19.63        1.9629    0   3   3
                46.25          5.58        1.9629    3   0   3
                46.71          3.26        1.9449    1   2   5
                50.34         18.75        1.8125    2   2   0
                52.03          3.48        1.7576    2   0   8
                52.85          1.99        1.7323    1   3   1
                54.08          5.83        1.6958    2   1   7
                54.55          1.77        1.6824    0   3   6
                54.55          1.81        1.6824    3   0   6
                54.88          9.17        1.6728    1   1   9
                56.14          2.11        1.6382    1   0  10
                59.68          2.48        1.5494    3   1   5
                59.93          2.86        1.5435    0   4   2
                60.69         11.59        1.5260    2   2   6
                62.18         10.00        1.4929    0   2  10
                63.16          2.97        1.4721    4   0   4
                64.98          1.46        1.4353    3   2   1
                66.06          3.38        1.4143    1   3   7
                66.78          1.38        1.4009    3   0   9
                66.78          3.55        1.4009    0   3   9
                67.90          1.17        1.3804    2   1  10
                68.48          2.24        1.3701    4   1   0
                70.75          3.20        1.3316    1   4   3
                70.75          4.60        1.3316    4   1   3
                71.63          1.39        1.3175    1   1  12
                74.20          1.95        1.2781    1   0  13
                77.00          3.65        1.2383    3   2   7
                78.74          1.63        1.2154    1   3  10
                83.98          1.86        1.1523    4   0  10
                84.76          2.92        1.1438    2   1  13
                87.49          2.35        1.1149    2   2  12
                88.14          1.40        1.1084    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.