Langite
Diffraction data computed using the structure from the paper listed below,
along with the cell parameters refined from the powder pattern for R060090
      Galy J, Jaud J, Pulou R, Sempere R
      Bulletin de Mineralogie 107 (1984) 641-648
      Structure cristalline de la langite, Cu4[SO4(OH)6H2O]*H2O
      Locality: Mazega, Aveyrone, France

      CELL PARAMETERS:   7.129378   6.033447   11.23106   90.00000   89.99221   90.00000
      SPACE GROUP: Pc
      X-RAY WAVELENGTH:     1.541838
               2-THETA      INTENSITY    D-SPACING   H   K   L
                12.47        100.00        7.1294    1   0   0
                15.83          1.95        5.6155    0   0   2
                16.73          5.56        5.3150    0   1   1
                20.89          2.83        4.2611   -1   1   1
                20.89          1.94        4.2613    1   1   1
                25.02         35.07        3.5647    2   0   0
                28.09          1.25        3.1811    0   1   3
                29.72          1.18        3.0093   -2   0   2
                30.22          1.48        2.9604   -2   1   1
                30.22          2.30        2.9606    2   1   1
                30.81          2.06        2.9051    1   1   3
                31.91          7.44        2.8078    0   0   4
                33.76         10.44        2.6575    0   2   2
                34.36         16.76        2.6123   -1   0   4
                34.36          3.36        2.6126    1   0   4
                36.10          5.59        2.4901   -1   2   2
                36.10         29.79        2.4902    1   2   2
                37.89          2.13        2.3765    3   0   0
                39.14          1.03        2.3028    2   2   0
                40.94         10.94        2.2056   -2   0   4
                40.94          4.27        2.2059    2   0   4
                42.45          6.85        2.1305   -2   2   2
                42.45         16.80        2.1307    2   2   2
                50.32          4.65        1.8138   -3   0   4
                50.31          2.54        1.8141    3   0   4
                51.27          2.82        1.7823    4   0   0
                51.61          5.92        1.7714   -3   2   2
                51.61          9.86        1.7715    3   2   2
                57.99          8.40        1.5905    0   2   6
                59.56          4.03        1.5523   -1   2   6
                59.56          4.07        1.5524    1   2   6
                61.48          2.76        1.5084    0   4   0
                61.64          1.49        1.5047   -4   0   4
                61.64          1.97        1.5049    4   0   4
                62.78          3.91        1.4802   -4   2   2
                62.77          2.99        1.4803    4   2   2
                62.99          4.58        1.4757    1   4   0
                64.12          2.47        1.4524   -2   2   6
                64.11          2.73        1.4526    2   2   6
                67.41          1.54        1.3891    2   4   0
                68.06          1.89        1.3775    1   0   8
                70.92          1.30        1.3288    0   4   4
                71.34          1.32        1.3219    3   2   6
                72.33          2.25        1.3063   -1   4   4
                74.50          1.09        1.2735    3   4   0
                75.69          1.66        1.2564   -5   2   2
                75.68          1.69        1.2565    5   2   2
                76.50          2.39        1.2450   -2   4   4
                79.23          1.12        1.2088    3   0   8
                81.01          1.01        1.1867   -4   2   6
                83.30          1.35        1.1597   -3   4   4
                83.30          1.35        1.1597   -3   4   4
       XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs
  For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.