Ankangite
      Diffraction data computed using the structure from the paper listed below,
      along with the cell parameters refined from single crystal data of R080136
      Shi-bin X, Hai-fu F, Xiao-jing W, Fang-hua L
      Acta Crystallographica A46 (1990) 929-934
      Direct methods in superspace. II The first application to an unknown
      incommensurate modulated structure
      Note: this is the average structure, isomorphous with hollandite
      Note: y-coordinate of O2 altered from .248 to make regular TiO6 polyhedra
      Locality: Shiti barite deposit, Ankang County, Shaanxi, China

      CELL PARAMETERS:  10.1680 10.1680  2.9560   90.000   90.000   90.000
      SPACE GROUP: I4/m      

           ATOM        X         Y         Z     OCCUPANCY  ISO(B)
            Ba     0.00000   0.00000   0.50000     0.400     0.500
            Ti     0.36600   0.15500   0.00000     1.000     2.500
            O      0.16500   0.19800   0.00000     1.000     3.000
            O      0.57200   0.14800   0.00000     1.000     3.750

            X-RAY WAVELENGTH:     1.541838
            BOUNDS ON TWO THETA:    5.0  90.0
            LIMITS IMPOSED ON THE INDICES ARE:  +/-  9 +/-  9 +/-  2
            MAX. ABS. INTENSITY / VOLUME**2:      33.69075943    
            The INTENSITY cut off value is   1.00

               2-THETA      INTENSITY    D-SPACING   H   K   L
                12.31         36.01        7.1899    1   1   0
                17.44          5.40        5.0840    2   0   0
                24.77         15.43        3.5949    2   2   0
                27.74         33.96        3.2154    3   1   0
                27.74         66.04        3.2154    1   3   0
                31.52          5.96        2.8385    1   0   1
                35.31         20.18        2.5420    4   0   0
                36.25         32.78        2.4784    1   2   1
                36.25          6.56        2.4784    2   1   1
                39.64          4.91        2.2736    4   2   0
                39.64          6.70        2.2736    2   4   0
                40.49         32.15        2.2278    3   0   1
                44.40          9.87        2.0405    3   2   1
                45.49         10.02        1.9941    5   1   0
                45.49          1.20        1.9941    1   5   0
                48.05         11.08        1.8936    4   1   1
                50.79          9.97        1.7975    4   4   0
                54.12          9.03        1.6947    6   0   0
                54.79          1.65        1.6754    4   3   1
                57.96         25.17        1.5912    2   5   1
                57.96          1.28        1.5912    5   2   1
                62.88          6.53        1.4780    0   0   2
                63.99          8.14        1.4551    6   1   1
                64.84          1.03        1.4380    5   5   0
                66.88         11.50        1.3989    5   4   1
                68.66          1.21        1.3670    2   2   2
                70.07          2.79        1.3429    3   1   2
                70.07          5.28        1.3429    1   3   2
                70.54          3.81        1.3351    7   3   0
                70.54          1.67        1.3351    3   7   0
                74.22          1.19        1.2777    4   0   2
                76.94          1.05        1.2392    2   4   2
                76.94          1.35        1.2392    4   2   2
                80.64          1.00        1.1914    6   5   1
                80.97          1.76        1.1874    5   1   2
                81.42          1.55        1.1820    5   7   0
                83.30          1.28        1.1600    1   8   1
                84.95          2.70        1.1416    4   4   2
                86.72          1.08        1.1229    1   9   0
                87.59          2.65        1.1139    6   0   2
                88.58          1.61        1.1040    3   8   1
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.