Hydrotungstite
Diffraction data computed using the structure from the paper listed below, 
along with the cell parameters refined from single crystal data of R120104
      Barkley M C, Yang H, Evans S H, Downs R T, Origlieri M J
      Acta Crystallographica E67 (2011) i47-i48
      Redetermination of despujolsite, Ca3Mn4+(SO4)2(OH)6*3H2O
      Locality: N'Chwaning III mine, Kalahari Manganese Field, South Africa
      _database_code_amcsd 0018458

      CELL PARAMETERS:   8.5232  8.5232 10.8009   90.000   90.000  120.000
      SPACE GROUP: P-62c     

           ATOM        X         Y         Z     OCCUPANCY  ISO(B)
            Ca     0.15210   0.30348   0.25000     1.000     0.857
            Mn     0.00000   0.00000   0.00000     1.000     0.668
            S      0.33333   0.66667   0.02544     1.000     0.739
            O      0.33333   0.66667  -0.11153     1.000     1.319
            O      0.24190   0.47842   0.06891     1.000     1.484
            Oh     0.89450   0.09660   0.11070     1.000     0.861
            O      0.50060   0.48530   0.25000     1.000     1.350
            H      0.83600   0.12500   0.07600     1.000     2.053
            H      0.52100   0.44500   0.19300     1.000     3.632

            X-RAY WAVELENGTH:     1.541838
            BOUNDS ON TWO THETA:    5.0  90.0
            LIMITS IMPOSED ON THE INDICES ARE:  +/-  6 +/-  6 +/-  9
            MAX. ABS. INTENSITY / VOLUME**2:      18.76389174    
            The INTENSITY cut off value is   1.00

               2-THETA      INTENSITY    D-SPACING   H   K   L
                11.99         30.31        7.3813    1   0   0
                14.53         13.29        6.0942    1   0   1
                16.41          1.58        5.4005    0   0   2
                20.84         42.92        4.2616    1   1   0
                24.11          3.48        3.6907    2   0   0
                25.51         23.68        3.4924    2   0   1
                26.65        100.00        3.3454    1   1   2
                27.57          2.03        3.2359    1   0   3
                33.17          1.19        2.7012    2   1   1
                33.18          4.67        2.7002    0   0   4
                34.81         22.29        2.5771    2   0   3
                36.24          9.81        2.4787    2   1   2
                37.49          2.81        2.3990    3   0   1
                40.28         17.29        2.2390    3   0   2
                40.92         13.81        2.2053    2   1   3
                41.43          1.39        2.1792    2   0   4
                42.42         24.28        2.1308    2   2   0
                43.66          9.07        2.0732    1   0   5
                44.61         16.65        2.0314    3   0   3
                45.78          1.33        1.9821    2   2   2
                46.82          2.12        1.9403    2   1   4
                48.85          2.52        1.8643    2   0   5
                50.15          6.96        1.8190    4   0   1
                50.16          1.74        1.8187    3   0   4
                50.71          2.61        1.8002    0   0   6
                52.40          2.08        1.7462    4   0   2
                53.66          6.82        1.7080    2   1   5
                54.16          3.36        1.6934    3   2   0
                54.89         17.16        1.6727    2   2   4
                55.41          3.40        1.6583    1   1   6
                56.40          3.83        1.6314    3   1   4
                56.91          2.12        1.6179    2   0   6
                57.19          1.54        1.6107    4   1   0
                57.88          1.78        1.5931    4   1   1
                59.93          9.64        1.5435    4   1   2
                64.10          5.45        1.4528    3   0   6
                65.01          1.67        1.4346    3   2   4
                65.58          2.70        1.4236    2   0   7
                65.73          4.43        1.4205    3   3   0
                67.73          1.55        1.3834    4   2   1
                68.27          4.56        1.3738    3   3   2
                68.72          1.61        1.3659    5   0   3
                69.64          1.10        1.3501    0   0   8
                70.97          1.44        1.3281    1   0   8
                72.70          2.57        1.3007    4   2   3
                77.61          1.67        1.2302    6   0   0
                79.92          2.84        1.2004    4   1   6
                81.28          3.07        1.1837    4   0   7
                83.78          1.70        1.1546    5   2   2
                85.06          3.40        1.1405    2   2   8
                87.04          3.20        1.1195    6   0   4
                88.74          1.41        1.1024    2   1   9
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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.