Hollandite
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from the powder pattern R070539.
      Post J E, Von Dreele R B, Buseck P R
      Acta Crystallographica B38 (1982) 1056-1065
      Symmetry and cation displacements in hollandites:
      structure refinements of hollandite, cryptomelane and priderite
      Locality: Stuor Njuoskes, Sweden
      Note: Anisotropic displacement factors from ICSD

      CELL PARAMETERS:   9.918019   2.852453   9.811461   90.00000   90.70820   90.00000
      SPACE GROUP: I2/m
      X-RAY WAVELENGTH:     1.541838
               2-THETA      INTENSITY    D-SPACING   H   K   L
                12.51         13.72        7.0181   -1   0   1
                12.67         14.70        6.9319    1   0   1
                17.78         20.66        4.9586    2   0   0
                17.98         32.39        4.9054    0   0   2
                25.27         24.10        3.5090   -2   0   2
                25.59         23.09        3.4659    2   0   2
                28.27         49.42        3.1445   -3   0   1
                28.49        100.00        3.1210    3   0   1
                28.52         99.52        3.1172   -1   0   3
                28.74         49.83        3.0944    1   0   3
                32.55          6.76        2.7413    1   1   0
                32.58          6.84        2.7390    0   1   1
                36.11         15.05        2.4793    4   0   0
                36.52          8.42        2.4527    0   0   4
                37.33         22.87        2.4011   -2   1   1
                37.45         62.77        2.3941    2   1   1
                37.41         48.80        2.3965   -1   1   2
                37.52         27.92        2.3895    1   1   2
                38.36          4.02        2.3394   -3   0   3
                38.85          1.47        2.3106    3   0   3
                40.44          8.40        2.2238   -4   0   2
                40.86         13.77        2.2018    4   0   2
                40.72         20.39        2.2093   -2   0   4
                41.70         47.27        2.1596    3   1   0
                41.14          6.28        2.1877    2   0   4
                41.90         44.54        2.1496    0   1   3
                45.64          9.21        1.9825   -3   1   2
                46.47         10.46        1.9488   -5   0   1
                46.03          6.90        1.9664    2   1   3
                46.97          2.41        1.9294   -1   0   5
                47.21          3.88        1.9203    1   0   5
                49.37         29.70        1.8413   -4   1   1
                49.55         12.74        1.8350    4   1   1
                49.67         11.60        1.8310   -1   1   4
                49.85         38.90        1.8248    1   1   4
                51.99          5.40        1.7545   -4   0   4
                52.69          5.91        1.7330    4   0   4
                53.91          4.47        1.6965   -3   0   5
                54.26          2.96        1.6867    5   0   3
                55.46         31.64        1.6529    6   0   0
                54.55          1.27        1.6782    3   0   5
                56.12         31.44        1.6351    0   0   6
                56.91          1.76        1.6144    3   1   4
                58.58          1.11        1.5722   -6   0   2
                59.50         10.52        1.5502   -5   1   2
                59.90         42.21        1.5408    5   1   2
                59.86         34.12        1.5416   -2   1   5
                60.26         12.73        1.5324    2   1   5
                65.29         24.37        1.4262    0   2   0
                65.75          8.00        1.4173   -6   1   1
                66.68          2.47        1.3998    7   0   1
                66.55          3.90        1.4022    1   1   6
                68.29          1.46        1.3707    2   2   0
                68.36          2.12        1.3695    0   2   2
                67.21          1.00        1.3901   -1   0   7
                68.17          1.90        1.3728   -4   0   6
                68.73         35.27        1.3630   -5   1   4
                68.74          1.25        1.3629    6   0   4
                68.88          3.19        1.3605   -4   1   5
                69.47          5.26        1.3504    5   1   4
                69.61         23.64        1.3479    4   1   5
                71.23          1.00        1.3213   -2   2   2
                71.38          1.00        1.3189    2   2   2
                72.20          7.16        1.3059   -7   0   3
                72.25          1.79        1.3052    6   1   3
                72.65          3.39        1.2989   -3   2   1
                72.76          7.72        1.2972    3   2   1
                72.02          1.03        1.3087   -3   1   6
                72.78          7.98        1.2969   -1   2   3
                72.89          3.79        1.2953    1   2   3
                72.96          4.82        1.2942    7   0   3
                72.67          2.83        1.2986    3   1   6
                72.83          3.68        1.2961   -3   0   7
                73.59          5.76        1.2847    3   0   7
                75.43          1.47        1.2579    0   1   7
                76.99          3.57        1.2363    4   2   0
                77.33          1.68        1.2317   -7   1   2
                77.24          2.38        1.2329    0   2   4
                78.38          2.28        1.2178   -3   2   3
                78.70          1.58        1.2136    3   2   3
                79.73          1.37        1.2005   -4   2   2
                78.51          2.83        1.2161    2   1   7
                79.91          1.23        1.1984    8   0   2
                80.01          1.62        1.1970    4   2   2
                79.92          2.34        1.1982   -2   2   4
                80.20          1.01        1.1948    2   2   4
                82.29          3.79        1.1697   -6   0   6
                83.93          1.32        1.1509   -5   2   1
                83.54          6.43        1.1553    6   0   6
                83.89          1.96        1.1513   -5   0   7
                85.78          1.06        1.1308   -8   1   1
                86.05          2.52        1.1279    8   1   1
                86.16          1.81        1.1268   -4   1   7
                86.63          1.25        1.1219    7   1   4
                87.60          1.36        1.1119   -8   0   4
                86.73          1.90        1.1209   -1   1   8
                88.12          1.34        1.1067   -4   2   4
                87.01          1.74        1.1180    1   1   8
                88.68          1.58        1.1012    4   2   4
                89.47          4.41        1.0935    9   0   1
                89.66          1.23        1.0917   -3   2   5
                90.92          9.97        1.0798    6   2   0
                90.92          9.97        1.0798    6   2   0
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.