Eudidymite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern R060063 Fang J H, Robinson P D, Ohya Y American Mineralogist 57 (1972) 1345-1354 Redetermination of the crystal structure of eudidymite and its dimorphic relationship to epididymite CELL PARAMETERS: 12.63000 7.380000 14.02000 90.00000 103.7200 90.00000 SPACE GROUP: C2/c X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 13.06 4.68 6.7939 0 0 2 14.03 70.85 6.3225 1 1 0 14.49 23.85 6.1253 2 0 0 14.74 5.82 6.0215 -1 1 1 16.20 4.74 5.4811 1 1 1 17.98 10.05 4.9401 -1 1 2 20.35 9.46 4.3691 1 1 2 22.73 17.41 3.9162 -1 1 3 24.13 39.22 3.6907 0 2 0 24.42 19.21 3.6471 -3 1 1 25.58 22.01 3.4853 1 1 3 26.25 84.58 3.3970 0 0 4 26.84 4.93 3.3243 -2 0 4 27.52 23.79 3.2431 0 2 2 28.20 100.00 3.1658 -2 2 1 28.27 68.25 3.1581 -1 1 4 28.24 12.95 3.1612 2 2 0 28.44 11.18 3.1405 -3 1 3 29.01 64.78 3.0794 -4 0 2 29.17 87.85 3.0627 4 0 0 29.69 11.75 3.0107 -2 2 2 29.81 55.43 2.9990 2 2 1 30.61 5.67 2.9222 3 1 2 31.40 37.79 2.8503 1 1 4 32.38 1.82 2.7655 -3 1 4 32.50 2.04 2.7556 -2 2 3 32.69 6.80 2.7406 2 2 2 33.06 5.39 2.7103 2 0 4 34.47 14.87 2.6027 -4 0 4 34.88 5.29 2.5726 4 0 2 35.08 6.42 2.5587 3 1 3 35.94 14.52 2.4994 0 2 4 36.38 1.52 2.4700 -2 2 4 36.61 9.06 2.4549 2 2 3 37.18 6.20 2.4187 -3 1 5 37.28 4.07 2.4123 1 3 0 37.53 9.80 2.3971 -4 2 1 37.60 3.44 2.3926 1 1 5 37.57 4.45 2.3945 -1 3 1 37.98 1.06 2.3698 -5 1 2 38.06 11.10 2.3645 -4 2 2 38.19 1.37 2.3569 4 2 0 39.00 1.20 2.3100 -2 0 6 39.04 1.39 2.3075 -1 3 2 39.81 5.96 2.2646 0 0 6 40.26 1.58 2.2405 3 1 4 40.26 3.21 2.2405 1 3 2 40.64 4.28 2.2201 -1 1 6 41.26 1.68 2.1883 0 2 5 41.33 3.25 2.1845 2 2 4 42.50 7.11 2.1270 -4 2 4 42.60 1.53 2.1223 -3 3 1 42.85 4.04 2.1105 4 2 2 43.37 3.88 2.0865 -3 3 2 43.71 3.21 2.0711 -4 0 6 43.90 1.02 2.0623 5 1 2 44.10 7.57 2.0536 1 1 6 44.37 1.02 2.0418 6 0 0 45.07 22.97 2.0117 -1 3 4 45.25 1.20 2.0039 -5 1 5 46.37 1.51 1.9581 -2 2 6 46.66 4.31 1.9465 3 3 2 47.08 2.78 1.9302 0 2 6 47.27 1.28 1.9229 -1 1 7 48.49 3.31 1.8771 -3 1 7 49.32 1.88 1.8475 -1 3 5 49.44 10.29 1.8432 -5 1 6 49.91 8.51 1.8270 3 3 3 49.87 5.36 1.8286 0 4 1 50.01 9.14 1.8236 -6 2 2 50.09 24.70 1.8209 -6 2 1 50.53 4.20 1.8061 -4 2 6 50.87 1.63 1.7949 1 1 7 51.51 9.00 1.7740 -3 3 5 51.71 6.17 1.7677 -2 4 1 51.83 4.12 1.7636 1 3 5 52.18 1.66 1.7527 -2 2 7 52.45 12.19 1.7444 5 1 4 52.61 3.43 1.7393 -2 4 2 52.75 1.64 1.7351 -6 0 6 52.69 2.93 1.7370 2 4 1 52.88 4.41 1.7311 -7 1 3 53.62 1.14 1.7090 0 4 3 53.83 3.17 1.7029 7 1 0 53.98 7.06 1.6985 0 0 8 54.16 6.49 1.6931 -1 1 8 54.24 2.72 1.6910 -1 3 6 54.30 1.73 1.6891 -5 1 7 55.21 2.95 1.6635 -5 3 4 55.35 1.06 1.6595 -6 2 5 55.82 2.23 1.6467 -3 3 6 55.92 1.12 1.6438 4 0 6 55.94 1.09 1.6435 7 1 1 57.06 2.46 1.6139 1 3 6 57.91 4.33 1.5922 1 1 8 57.95 5.00 1.5911 6 0 4 58.37 5.94 1.5806 4 4 0 58.54 8.75 1.5763 -8 0 2 58.64 1.96 1.5740 3 1 7 58.62 3.39 1.5746 3 3 5 58.79 1.32 1.5702 -6 2 6 59.41 3.05 1.5553 6 2 3 59.85 1.56 1.5450 2 0 8 59.94 7.00 1.5429 0 2 8 60.19 1.17 1.5370 5 3 3 60.44 1.61 1.5313 8 0 0 60.50 2.32 1.5300 -2 4 5 60.77 2.07 1.5239 -3 3 7 61.49 2.45 1.5075 -3 1 9 61.59 1.11 1.5054 -4 4 4 63.83 4.05 1.4579 -7 1 7 63.90 1.86 1.4564 3 3 6 64.56 1.38 1.4432 -8 2 3 64.66 2.76 1.4412 -1 5 2 64.87 3.09 1.4370 2 4 5 65.10 1.61 1.4323 -2 2 9 65.25 2.15 1.4294 1 1 9 65.58 1.83 1.4231 8 0 2 65.51 7.52 1.4244 1 5 2 65.69 4.92 1.4210 -8 2 4 65.72 1.08 1.4204 -1 3 8 66.29 6.78 1.4095 -3 3 8 67.59 2.08 1.3855 -6 4 2 67.66 2.84 1.3843 -6 4 1 67.73 1.98 1.3830 1 5 3 68.06 1.50 1.3772 -7 3 5 68.14 3.08 1.3757 -9 1 2 68.33 2.02 1.3724 -6 4 3 68.45 1.59 1.3703 4 4 4 68.56 1.13 1.3683 -4 0 10 69.11 4.23 1.3588 0 0 10 69.08 1.04 1.3592 1 3 8 69.12 3.46 1.3585 -3 5 3 69.32 2.28 1.3551 4 0 8 69.75 1.58 1.3478 3 3 7 69.84 1.43 1.3463 -6 4 4 70.26 1.57 1.3392 3 5 2 70.37 1.17 1.3374 0 4 7 70.70 1.12 1.3321 1 5 4 70.93 1.11 1.3282 -7 3 6 71.25 2.44 1.3231 -3 5 4 72.16 2.27 1.3086 -5 1 10 72.12 1.53 1.3093 -6 4 5 72.36 1.81 1.3054 -3 3 9 72.60 2.86 1.3017 2 2 9 73.23 5.38 1.2921 -9 1 6 73.32 4.93 1.2906 7 3 3 74.17 1.23 1.2779 5 3 6 74.37 1.97 1.2751 0 2 10 74.57 2.65 1.2721 4 2 8 74.52 4.35 1.2728 -7 3 7 74.61 2.99 1.2715 -5 5 2 75.11 1.69 1.2643 2 4 7 75.13 1.28 1.2641 -6 4 6 75.48 1.88 1.2590 -10 0 2 75.50 6.45 1.2588 9 1 2 75.67 1.19 1.2563 6 4 3 76.10 1.65 1.2503 3 5 4 76.36 3.52 1.2467 -1 5 6 76.48 1.02 1.2451 5 5 1 78.58 1.51 1.2170 -9 3 2 78.60 5.19 1.2166 5 5 2 78.74 1.74 1.2148 1 5 6 79.52 1.23 1.2049 -9 3 4 79.78 2.02 1.2015 -2 2 11 80.19 1.09 1.1965 6 2 7 80.24 2.10 1.1958 -9 1 8 80.82 2.88 1.1887 -2 4 9 81.04 1.04 1.1860 -1 5 7 81.36 2.23 1.1822 -8 4 4 81.43 1.41 1.1813 -10 2 1 81.67 2.17 1.1784 8 4 0 81.70 1.17 1.1781 2 6 2 82.68 1.19 1.1666 -5 5 6 83.55 1.06 1.1567 9 1 4 83.70 1.20 1.1550 -4 0 12 83.73 1.33 1.1547 7 1 7 83.86 1.07 1.1531 5 1 9 84.30 1.66 1.1483 8 0 6 84.76 1.09 1.1432 3 5 6 85.63 1.27 1.1338 9 3 2 85.80 1.91 1.1320 -6 2 11 86.14 1.04 1.1284 7 5 0 87.84 1.73 1.1109 2 4 9 88.37 1.92 1.1055 -6 4 9 88.56 1.35 1.1037 -7 5 5 89.30 1.43 1.0965 8 2 6 89.26 1.04 1.0968 6 4 6 89.42 1.29 1.0953 -7 3 10 90.06 2.52 1.0892 -9 1 10 90.06 2.52 1.0892 -9 1 10 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.