Scheelite
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from single crystal data of R050543
      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:   5.2400  5.2400 11.3590   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:      249.8330597    
            The INTENSITY cut off value is   1.00

               2-THETA      INTENSITY    D-SPACING   H   K   L
                18.65         60.55        4.7581    1   0   1
                28.77        100.00        3.1032    1   1   2
                29.10         23.41        3.0690    1   0   3
                31.50         13.58        2.8398    0   0   4
                34.22         20.33        2.6200    2   0   0
                39.25         12.99        2.2951    2   1   1
                39.25          3.84        2.2951    1   2   1
                40.00          1.44        2.2539    1   1   4
                43.41          4.49        2.0843    1   0   5
                45.52          2.57        1.9926    2   1   3
                45.52          7.03        1.9926    1   2   3
                47.20         29.66        1.9256    2   0   4
                49.18         12.77        1.8526    2   2   0
                53.05          2.97        1.7264    3   0   1
                54.42         15.72        1.6859    1   1   6
                56.41          3.61        1.6311    2   1   5
                56.41          4.41        1.6311    1   2   5
                57.98         14.45        1.5907    3   1   2
                57.98         11.33        1.5907    1   3   2
                58.16          2.12        1.5860    3   0   3
                59.58         11.03        1.5516    2   2   4
                59.65          1.92        1.5501    1   0   7
                64.66          3.34        1.4416    3   2   1
                64.66          1.50        1.4416    2   3   1
                65.77          1.82        1.4199    0   0   8
                67.66          2.64        1.3847    3   0   5
                69.25          2.74        1.3568    2   3   3
                69.25          1.63        1.3568    3   2   3
                70.60          1.95        1.3341    2   1   7
                70.60          2.05        1.3341    1   2   7
                72.10          3.39        1.3100    4   0   0
                75.23          1.69        1.2630    1   4   1
                75.23          1.09        1.2630    4   1   1
                76.28          6.11        1.2483    2   0   8
                76.38          4.53        1.2469    3   1   6
                76.38          6.93        1.2469    1   3   6
                77.85          1.42        1.2270    1   0   9
                79.40          5.08        1.2069    3   3   2
                79.56          1.63        1.2048    4   1   3
                79.56          1.07        1.2048    1   4   3
                80.79          4.62        1.1895    4   0   4
                80.85          1.55        1.1888    3   0   7
                82.29          2.39        1.1717    2   4   0
                82.29          2.52        1.1717    4   2   0
                86.33          3.82        1.1270    2   2   8
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.