Bismutite
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from the powder pattern for R060665
      Grice J D
      The Canadian Mineralogist 40 (2002) 693-698
      A solution to the crystal structures of bismutite and beyerite

      CELL PARAMETERS:   3.865000   3.862000   13.67500   90.00000   90.00000   90.00000
      SPACE GROUP: Imm2
      X-RAY WAVELENGTH:     1.541838
               2-THETA      INTENSITY    D-SPACING   H   K   L
                12.90         44.50        6.8787    0   0   2
                23.87         25.83        3.7304    1   0   1
                23.85         41.14        3.7337    0   1   1
                25.92         19.98        3.4394    0   0   4
                30.21        100.00        2.9601    1   0   3
                30.19         86.90        2.9617    0   1   3
                32.67         67.21        2.7418    1   1   0
                35.25         10.72        2.5469    1   1   2
                39.30         16.69        2.2929    0   0   6
                40.20          2.20        2.2436    1   0   5
                40.19          2.77        2.2443    0   1   5
                42.15         40.22        2.1439    1   1   4
                46.89         17.59        1.9378    2   0   0
                46.84         14.16        1.9397    0   2   0
                48.83          3.20        1.8652    2   0   2
                48.78          5.22        1.8669    0   2   2
                51.99         35.27        1.7589    1   1   6
                52.18         10.85        1.7528    1   0   7
                52.17         10.45        1.7532    0   1   7
                53.25          8.66        1.7199    2   1   1
                53.22          9.96        1.7209    1   2   1
                54.33          5.24        1.6883    2   0   4
                54.29          6.52        1.6895    0   2   4
                56.76         25.79        1.6215    2   1   3
                56.73         24.26        1.6224    1   2   3
                62.77          7.55        1.4800    2   0   6
                62.73          7.19        1.4809    0   2   6
                63.40          1.19        1.4667    2   1   5
                63.37          1.32        1.4673    1   2   5
                65.64          6.40        1.4220    1   0   9
                65.63          6.75        1.4222    0   1   9
                68.14          2.92        1.3757    0   0  10
                68.41          7.80        1.3709    2   2   0
                69.95          2.82        1.3444    2   2   2
                72.71          6.78        1.3001    2   1   7
                72.68          6.79        1.3005    1   2   7
                73.62          1.18        1.2862    3   0   1
                73.54          1.26        1.2874    0   3   1
                74.48          4.40        1.2735    2   2   4
                76.60          5.02        1.2435    3   0   3
                76.51          4.90        1.2446    0   3   3
                77.62          5.67        1.2296    1   1  10
                77.91          4.31        1.2257    3   1   0
                77.84          4.61        1.2266    1   3   0
                81.83          6.12        1.1766    2   2   6
                83.74          3.87        1.1546    3   1   4
                83.67          3.67        1.1554    1   3   4
                84.46          5.89        1.1465    2   1   9
                84.43          6.08        1.1468    1   2   9
                84.47          1.14        1.1465    0   0  12
                86.77          2.68        1.1218    2   0  10
                86.74          2.39        1.1221    0   2  10
                86.74          2.39        1.1221    0   2  10
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.