Bastnasite-Ce
Diffraction data computed using the structure from the paper listed below, 
along with the cell parameters refined from the powder pattern of R060550
      Ni Y, Hughes J M, Mariano A N
      American Mineralogist 78 (1993) 415-418
      The atomic arrangement of bastnasite-(Ce), Ce(CO3)F, and structural elements of
      synchysite-(Ce), rontgenite-(Ce), and parisite-(Ce)

      CELL PARAMETERS:   7.1128  7.1128  9.7591   90.000   90.000  120.000
      SPACE GROUP: P-62c     

           ATOM        X         Y         Z     OCCUPANCY  ISO(B)
            Ce     0.33941   0.00000   0.00000     1.000     0.360
            C      0.32200   0.29000   0.25000     1.000     0.600
            O      0.31600   0.10900   0.25000     1.000     0.900
            O      0.32450   0.38280   0.13540     1.000     1.000
            F      0.00000   0.00000   0.00000     1.000     0.800
            F      0.66667   0.33333   0.05100     1.000     0.700

            X-RAY WAVELENGTH:     1.541838
            BOUNDS ON TWO THETA:    5.0  90.0
            LIMITS IMPOSED ON THE INDICES ARE:  +/-  5 +/-  5 +/-  8
            MAX. ABS. INTENSITY / VOLUME**2:      119.4746040    
            The INTENSITY cut off value is   1.00

               2-THETA      INTENSITY    D-SPACING   H   K   L
                18.18         53.24        4.8795    0   0   2
                25.04         69.52        3.5564    1   1   0
                31.12        100.00        2.8740    1   1   2
                34.43          1.22        2.6045    2   0   2
                36.84         12.65        2.4398    0   0   4
                39.80          1.75        2.2647    2   1   1
                40.33          2.23        2.2365    2   0   3
                44.10         36.46        2.0533    3   0   0
                45.06         46.48        2.0119    1   1   4
                48.08         34.82        1.8926    3   0   2
                51.38          9.05        1.7782    2   2   0
                54.96         21.11        1.6707    2   2   2
                56.58          2.76        1.6265    0   0   6
                58.78         16.23        1.5710    3   0   4
                62.82         12.23        1.4792    1   1   6
                64.89         11.62        1.4370    2   2   4
                69.99          7.08        1.3442    4   1   0
                73.01         17.57        1.2959    4   1   2
                74.41          8.35        1.2750    3   0   6
                78.39          1.81        1.2199    0   0   8
                79.93          7.00        1.2002    2   2   6
                81.13          1.33        1.1855    3   3   0
                81.81         11.66        1.1773    4   1   4
                83.84          5.75        1.1539    1   1   8
                84.01          2.28        1.1520    3   3   2
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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.