Scheelite
Diffraction data computed using the structure from the paper listed below,  along with the cell parameters refined from single crystal data of R150130
      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
      _database_code_amcsd 0013201

      CELL PARAMETERS:   5.2460  5.2460 11.4090   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:      247.8959474    
            The INTENSITY cut off value is   1.00

               2-THETA      INTENSITY    D-SPACING   H   K   L
                18.62         60.45        4.7663    1   0   1
                28.71        100.00        3.1098    1   1   2
                29.00         23.48        3.0790    1   0   3
                31.36         13.66        2.8523    0   0   4
                34.18         20.28        2.6230    2   0   0
                39.20         12.97        2.2980    2   1   1
                39.20          3.83        2.2980    1   2   1
                39.87          1.45        2.2611    1   1   4
                43.24          4.52        2.0924    1   0   5
                45.42          2.57        1.9967    2   1   3
                45.42          7.03        1.9967    1   2   3
                47.07         29.75        1.9307    2   0   4
                49.12         12.75        1.8547    2   2   0
                52.98          2.96        1.7285    3   0   1
                54.21         15.83        1.6921    1   1   6
                56.24          3.62        1.6357    2   1   5
                56.24          4.43        1.6357    1   2   5
                57.89         14.45        1.5929    3   1   2
                57.89         11.32        1.5929    1   3   2
                58.06          2.12        1.5888    3   0   3
                59.38          1.93        1.5565    1   0   7
                59.44         11.05        1.5549    2   2   4
                64.57          3.33        1.4433    3   2   1
                64.57          1.49        1.4433    2   3   1
                65.44          1.84        1.4261    0   0   8
                67.48          2.64        1.3880    3   0   5
                69.12          2.74        1.3589    2   3   3
                69.12          1.63        1.3589    3   2   3
                70.33          1.96        1.3385    2   1   7
                70.33          2.07        1.3385    1   2   7
                72.00          3.38        1.3115    4   0   0
                75.13          1.09        1.2645    4   1   1
                75.13          1.69        1.2645    1   4   1
                75.95          6.16        1.2529    2   0   8
                76.15          6.96        1.2501    1   3   6
                76.15          4.54        1.2501    3   1   6
                77.46          1.44        1.2322    1   0   9
                79.28          5.07        1.2084    3   3   2
                79.42          1.63        1.2066    4   1   3
                79.42          1.07        1.2066    1   4   3
                80.57          1.56        1.1923    3   0   7
                80.63          4.62        1.1916    4   0   4
                82.17          2.39        1.1730    2   4   0
                82.17          2.51        1.1730    4   2   0
                85.98          3.83        1.1306    2   2   8
                89.97          3.66        1.0905    1   1  10
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.