Goudeyite
      Diffraction data computed using the structure from the paper listed below, 
      along with the cell parameters refined from single crystal data of R070649 
      Hess H
      Neues Jahrbuch fur Mineralogie, Monatshefte 1983 (1983) 385-392
      Die kristallstruktur des chlorotils, SECu6(AsO4)3(OH)6*3H2O
      (SE = seltene erdmetalle)
      Locality: Clara mine, Black Forest, Baden-Wurttemberg, Germany

      CELL PARAMETERS:  13.4590 13.4590  5.8791   90.000   90.000  120.000
      SPACE GROUP: P6_3/m    

           ATOM        X         Y         Z     OCCUPANCY  ISO(B)
            Ce     0.66667   0.33333   0.25000     0.707     0.708
            Cu     0.41091   0.31377   0.50230     1.000     0.883
            As     0.49393   0.14946   0.75000     1.000     0.596
            O      0.57280   0.17920   0.51720     1.000     1.107
            O      0.39140   0.39900   0.25000     1.000     1.089
            O      0.41320   0.21370   0.75000     1.000     0.947
            OH     0.36920   0.37650   0.75000     1.000     1.064
            OH     0.43880   0.24320   0.25000     1.000     1.491
            Wa     0.16440   0.15510   0.46140     0.500     1.733

            X-RAY WAVELENGTH:     1.541838
            BOUNDS ON TWO THETA:    5.0  90.0
            LIMITS IMPOSED ON THE INDICES ARE:  +/- 10 +/- 10 +/-  5
            MAX. ABS. INTENSITY / VOLUME**2:      101.4145156    
            The INTENSITY cut off value is   1.00

               2-THETA      INTENSITY    D-SPACING   H   K   L
                 7.58        100.00       11.6558    1   0   0
                16.89          1.80        5.2492    1   0   1
                20.06          3.33        4.4275    1   1   1
                20.16         13.72        4.4055    1   2   0
                21.47          4.10        4.1389    2   0   1
                22.89          2.06        3.8853    3   0   0
                25.26         17.34        3.5255    1   2   1
                25.26          2.61        3.5255    2   1   1
                26.49          5.61        3.3647    2   2   0
                27.59          1.18        3.2327    1   3   0
                27.59          7.69        3.2327    3   1   0
                30.61          9.34        2.9203    2   2   1
                30.68         10.15        2.9140    4   0   0
                31.38          1.52        2.8503    1   0   2
                31.58          3.47        2.8327    3   1   1
                33.26          2.63        2.6938    1   1   2
                33.51          5.64        2.6740    2   3   0
                33.51          3.32        2.6740    3   2   0
                35.29         10.76        2.5435    4   1   0
                36.76         15.86        2.4452    1   2   2
                36.76         11.04        2.4452    2   1   2
                36.93          3.62        2.4341    2   3   1
                40.76          1.89        2.2137    2   2   2
                43.22          2.64        2.0934    5   1   0
                43.74          1.28        2.0695    4   0   2
                43.89          1.36        2.0627    2   4   1
                45.88          1.51        1.9780    2   3   2
                47.45          1.93        1.9162    4   3   0
                50.07          1.85        1.8219    4   3   1
                51.01          2.62        1.7905    1   2   3
                51.23          2.76        1.7833    3   3   2
                51.87          4.55        1.7627    2   4   2
                51.87          2.18        1.7627    4   2   2
                53.76          5.60        1.7052    1   5   2
                54.55          1.42        1.6824    4   4   0
                54.78          1.14        1.6758    3   1   3
                55.16          1.32        1.6651    3   5   0
                56.81          4.42        1.6207    6   0   2
                56.93          1.05        1.6175    4   4   1
                57.40          2.87        1.6053    3   4   2
                57.53          1.44        1.6021    3   5   1
                58.59          2.38        1.5757    5   2   2
                59.91          1.55        1.5439    7   1   0
                60.91          3.08        1.5210    6   1   2
                63.27          2.91        1.4698    0   0   4
                63.74          3.01        1.4601    4   4   2
                64.29          1.22        1.4488    7   0   2
                65.56          1.58        1.4240    2   7   0
                65.56          1.06        1.4240    7   2   0
                71.95          1.14        1.3123    4   0   4
                72.01          1.02        1.3114    7   3   0
                74.57          1.92        1.2726    4   1   4
                78.10          1.24        1.2237    5   5   2
================================================================================
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.