Xenotime-(Y)
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from the powder pattern R050178
      Ni Y, Hughes J M, Mariano A N
      American Mineralogist 80 (1995) 21-26
      Crystal chemistry of the monazite and xenotime structures

      CELL PARAMETERS:   6.904225   6.904225   6.035515   90.00000   90.00000   90.00000
      ALTERNATE SETTING FOR SPACE GROUP: I4_1/amd
      X-RAY WAVELENGTH:     1.541838
               2-THETA      INTENSITY    D-SPACING   H   K   L
                19.56         21.64        4.5440    1   0   1
                25.82        100.00        3.4521    2   0   0
                32.58          6.11        2.7488    2   1   1
                34.96         55.67        2.5669    1   1   2
                36.83         14.06        2.4410    2   2   0
                39.67          6.74        2.2720    2   0   2
                42.02         17.47        2.1504    3   0   1
                47.04         10.07        1.9315    1   0   3
                49.96         14.75        1.8252    3   2   1
                51.67         46.45        1.7689    3   1   2
                53.05         12.90        1.7261    4   0   0
                54.42          4.79        1.6856    2   1   3
                57.07          1.94        1.6136    4   1   1
                59.90          8.48        1.5438    4   2   0
                61.17          1.28        1.5147    3   0   3
                61.43          1.58        1.5089    0   0   4
                65.10         13.49        1.4324    3   3   2
                67.75          7.82        1.3826    2   0   4
                69.85          4.60        1.3461    4   3   1
                73.56          2.14        1.2870    4   1   3
                73.80          8.74        1.2835    2   2   4
                77.18          9.79        1.2354    5   1   2
                78.30          2.22        1.2205    4   4   0
                84.08          4.17        1.1507    6   0   0
                85.19          1.44        1.1385    5   0   3
                85.42          3.85        1.1360    4   0   4
                86.53          2.09        1.1242    2   1   5
                88.70          8.63        1.1023    5   3   2
                88.70          8.63        1.1023    5   3   2
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.