Scheelite
Diffraction data computed using the structure from the paper listed below, 
along with the cell parameters refined from the powder pattern of R040173
      Hazen R M, Finger L W, Mariathasan J W E
      Journal of Physics and Chemistry of Solids 46 (1985) 253-263
      High-pressure crystal chemistry of scheelite-type tungstates and molybdates
      Note: P = 0.0001 GPa, in air

      CELL PARAMETERS:   5.2430  5.2430 11.3761   90.000   90.000   90.000
      ALTERNATE SETTING FOR SPACE GROUP: I4_1/a    

           ATOM        X         Y         Z     OCCUPANCY  ISO(B)
            Ca     0.00000   0.25000   0.62500     1.000     0.580
            W      0.00000   0.25000   0.12500     1.000     0.440
            O      0.15070   0.00860   0.21060     1.000     0.680

            X-RAY WAVELENGTH:     1.541838
            BOUNDS ON TWO THETA:    5.0  90.0
            LIMITS IMPOSED ON THE INDICES ARE:  +/-  4 +/-  4 +/- 10
            MAX. ABS. INTENSITY / VOLUME**2:      249.0749574    
            The INTENSITY cut off value is   1.00

               2-THETA      INTENSITY    D-SPACING   H   K   L
                18.63         60.51        4.7616    1   0   1
                28.74        100.00        3.1059    1   1   2
                29.06         23.43        3.0726    1   0   3
                31.46         13.61        2.8440    0   0   4
                34.20         20.32        2.6215    2   0   0
                39.23          3.83        2.2965    1   2   1
                39.23         12.99        2.2965    2   1   1
                39.95          1.45        2.2565    1   1   4
                43.35          4.50        2.0872    1   0   5
                45.48          2.57        1.9943    2   1   3
                45.48          7.03        1.9943    1   2   3
                47.15         29.69        1.9275    2   0   4
                49.15         12.76        1.8537    2   2   0
                53.01          2.97        1.7274    3   0   1
                54.35         15.76        1.6881    1   1   6
                56.35          3.61        1.6328    2   1   5
                56.35          4.42        1.6328    1   2   5
                57.94         14.45        1.5917    3   1   2
                57.94         11.33        1.5917    1   3   2
                58.12          2.12        1.5872    3   0   3
                59.53         11.04        1.5529    2   2   4
                59.55          1.92        1.5523    1   0   7
                64.62          3.34        1.4424    3   2   1
                64.62          1.49        1.4424    2   3   1
                65.66          1.83        1.4220    0   0   8
                67.59          2.64        1.3860    3   0   5
                69.19          2.74        1.3577    2   3   3
                69.19          1.63        1.3577    3   2   3
                70.50          1.95        1.3357    2   1   7
                70.50          2.06        1.3357    1   2   7
                72.05          3.39        1.3107    4   0   0
                75.18          1.09        1.2637    4   1   1
                75.18          1.69        1.2637    1   4   1
                76.16          6.13        1.2500    2   0   8
                76.29          4.53        1.2481    3   1   6
                76.29          6.94        1.2481    1   3   6
                77.71          1.43        1.2288    1   0   9
                79.34          5.08        1.2076    3   3   2
                79.50          1.63        1.2056    4   1   3
                79.50          1.07        1.2056    1   4   3
                80.72          4.62        1.1904    4   0   4
                80.75          1.55        1.1901    3   0   7
                82.23          2.39        1.1724    2   4   0
                82.23          2.52        1.1724    4   2   0
                86.20          3.82        1.1283    2   2   8
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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.