Leightonite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R050211 Menchetti S, Bindi L, Bonazzi P, Olmi F American Mineralogist 87 (2002) 721-725 Disordered distribution of Cu in the crystal structure of leightonite, K2Ca2Cu(SO4)4.2H2O CELL PARAMETERS: 11.65400 7.497000 10.09700 90.00000 125.2100 90.00000 SPACE GROUP: C2/c X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 15.03 1.63 5.8973 1 1 0 18.58 2.00 4.7760 2 0 0 21.55 2.63 4.1236 0 0 2 26.11 7.09 3.4125 0 2 1 26.36 12.30 3.3810 -3 1 1 26.42 9.38 3.3723 -3 1 2 28.30 100.00 3.1526 -2 2 1 30.30 2.60 2.9487 2 2 0 30.38 3.14 2.9410 -2 2 2 30.53 61.71 2.9277 1 1 2 30.63 64.42 2.9183 -1 1 3 30.49 12.39 2.9306 3 1 0 30.68 13.42 2.9137 -3 1 3 30.67 22.76 2.9141 -4 0 2 35.77 5.25 2.5093 2 2 1 35.91 4.87 2.4998 -2 2 3 37.59 4.82 2.3919 3 1 1 37.84 6.07 2.3766 -3 1 4 37.65 1.34 2.3880 4 0 0 37.92 1.23 2.3718 -4 0 4 40.68 3.24 2.2168 0 2 3 40.64 5.86 2.2193 -4 2 1 40.76 6.10 2.2128 -4 2 3 40.92 1.36 2.2044 -1 1 4 43.89 6.26 2.0618 0 0 4 46.18 6.50 1.9649 1 3 2 46.25 6.86 1.9621 -1 3 3 46.16 4.40 1.9658 3 3 0 46.28 4.65 1.9607 -3 3 3 46.51 4.03 1.9516 3 1 2 46.81 4.58 1.9400 -3 1 5 48.01 1.42 1.8940 -6 0 2 48.55 4.39 1.8742 0 4 0 49.19 6.29 1.8512 5 1 0 49.53 5.53 1.8394 -5 1 5 51.43 17.22 1.7757 3 3 1 51.63 14.68 1.7694 -3 3 4 51.63 1.37 1.7693 4 2 1 51.95 1.49 1.7594 -4 2 5 53.07 5.85 1.7248 -6 2 3 53.69 9.43 1.7062 0 4 2 54.23 3.33 1.6905 -6 2 2 54.38 3.27 1.6861 -6 2 4 54.29 1.78 1.6889 4 0 2 54.69 2.06 1.6774 -4 0 6 56.65 2.25 1.6238 5 1 1 57.08 2.21 1.6127 -5 1 6 57.97 1.12 1.5901 2 0 4 58.21 1.57 1.5841 -2 0 6 57.89 1.04 1.5920 6 0 0 58.33 1.25 1.5812 -6 0 6 58.52 7.26 1.5763 -4 4 2 61.02 4.91 1.5177 5 3 0 61.31 5.67 1.5112 -5 3 5 61.37 3.58 1.5097 0 2 5 62.70 1.21 1.4810 -1 5 1 63.45 1.43 1.4653 6 2 0 63.86 1.40 1.4569 -6 2 6 63.59 3.31 1.4623 -7 1 1 63.99 3.15 1.4541 -7 1 6 63.85 7.91 1.4571 -8 0 4 67.50 1.25 1.3869 0 4 4 69.24 2.16 1.3562 1 5 2 69.29 1.68 1.3553 -1 5 3 69.94 6.34 1.3442 4 2 3 70.38 6.45 1.3369 -4 2 7 70.97 1.10 1.3272 6 2 1 71.49 1.09 1.3188 -6 2 7 73.41 1.97 1.2890 3 5 1 73.57 2.19 1.2866 -3 5 4 75.26 1.79 1.2619 6 0 2 78.19 5.12 1.2217 -2 6 1 78.10 1.07 1.2229 3 3 4 78.44 1.18 1.2184 -3 3 7 78.90 3.06 1.2125 2 4 4 79.11 2.92 1.2098 -2 4 6 81.57 1.44 1.1795 5 5 0 81.82 1.16 1.1764 -5 5 5 88.06 1.82 1.1084 0 4 6 88.06 1.82 1.1084 0 4 6 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.