Alunogen Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R060015 Menchetti S, Sabelli C Tschermaks Mineralogische und Petrographische Mitteilungen 21 (1974) 164-178 Alunogen. Its structure and twinning Locality: grotta dell'allume, Vulcano Island, Italy CELL PARAMETERS: 7.425000 26.97500 6.060800 90.03000 97.66000 91.94000 SPACE GROUP: P-1 X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 3.28 3.67 26.7048 0 1 0 6.59 88.91 13.3524 0 2 0 9.90 2.49 8.9016 0 3 0 12.08 22.41 7.3053 1 0 0 12.44 23.68 7.0974 -1 1 0 12.62 25.81 6.9965 1 1 0 13.22 3.36 6.6762 0 4 0 13.61 16.23 6.4861 -1 2 0 13.94 3.16 6.3342 1 2 0 14.89 5.10 5.9351 0 0 1 15.43 1.64 5.7267 -1 3 0 15.87 2.83 5.5708 1 3 0 17.70 2.82 4.9987 -1 4 0 17.77 3.89 4.9799 -1 1 1 17.99 5.04 4.9187 -1 -1 1 18.58 4.31 4.7660 -1 2 1 19.00 1.43 4.6602 -1 -2 1 20.15 25.64 4.3983 0 -4 1 19.91 81.09 4.4508 0 6 0 19.80 17.77 4.4740 0 4 1 20.28 7.52 4.3705 -1 5 0 19.92 100.00 4.4486 -1 3 1 20.76 1.23 4.2707 1 0 1 20.51 91.98 4.3209 -1 -3 1 21.04 4.12 4.2145 1 1 1 20.83 11.82 4.2549 1 5 0 21.78 7.03 4.0726 1 -2 1 21.83 10.65 4.0629 1 2 1 21.70 3.37 4.0879 -1 4 1 22.15 2.50 4.0045 0 5 1 22.43 1.02 3.9565 -1 -4 1 23.02 58.29 3.8567 1 -3 1 23.09 54.22 3.8444 1 3 1 24.65 2.25 3.6043 1 -4 1 23.82 3.76 3.7279 -1 5 1 24.32 35.28 3.6527 2 0 0 24.75 4.10 3.5910 1 4 1 24.66 5.98 3.6036 -1 -5 1 24.65 3.53 3.6054 2 1 0 25.17 14.55 3.5318 0 -6 1 24.75 5.21 3.5905 0 6 1 25.05 7.16 3.5487 -2 2 0 25.41 7.13 3.4983 2 2 0 26.00 20.06 3.4214 -1 7 0 26.62 6.55 3.3422 1 -5 1 26.22 2.37 3.3927 -1 6 1 26.66 3.24 3.3381 0 8 0 26.61 9.33 3.3433 1 7 0 26.73 2.34 3.3289 1 5 1 26.38 10.00 3.3722 -2 0 1 26.48 3.05 3.3606 -2 1 1 26.72 3.11 3.3308 -2 -1 1 27.97 1.20 3.1844 0 -7 1 27.91 3.93 3.1915 -2 3 1 29.05 9.19 3.0690 -1 8 0 28.59 4.96 3.1168 -2 -3 1 29.18 1.79 3.0553 -2 5 0 28.83 11.18 3.0920 -1 7 1 29.19 14.34 3.0542 -2 4 1 29.69 20.95 3.0044 1 8 0 29.81 5.05 2.9925 -1 -7 1 30.06 15.46 2.9675 0 0 2 29.97 8.01 2.9763 2 5 0 30.76 5.72 2.9020 2 0 1 30.06 13.04 2.9676 -2 -4 1 30.90 5.76 2.8894 2 -1 1 30.99 2.76 2.8807 2 1 1 30.45 3.10 2.9311 0 8 1 31.32 3.72 2.8509 1 -7 1 31.40 9.73 2.8441 2 -2 1 30.80 2.63 2.8985 -2 5 1 31.07 3.37 2.8741 -1 2 2 31.46 2.56 2.8394 1 7 1 31.44 9.13 2.8404 -1 -2 2 31.56 3.04 2.8298 0 3 2 32.26 1.75 2.7705 2 -3 1 31.60 1.17 2.8270 -1 8 1 31.83 3.32 2.8065 -2 -5 1 32.08 1.52 2.7854 2 6 0 31.88 4.40 2.8022 -1 3 2 32.44 2.29 2.7558 -1 -3 2 32.63 1.32 2.7399 -1 -8 1 33.19 4.43 2.6946 0 -4 2 33.44 5.02 2.6751 2 -4 1 33.03 2.71 2.7073 -1 4 2 33.96 2.71 2.6360 0 -9 1 34.10 1.09 2.6248 1 8 1 34.93 4.41 2.5650 2 -5 1 34.78 14.63 2.5753 0 -5 2 35.95 1.63 2.4942 1 -3 2 35.85 3.09 2.5009 1 3 2 35.87 2.35 2.4994 -2 8 0 36.08 1.70 2.4857 1 10 0 36.63 8.81 2.4497 0 -6 2 36.76 3.37 2.4415 1 -9 1 36.03 24.29 2.4889 0 6 2 37.09 2.31 2.4203 1 -4 2 37.10 4.28 2.4198 0 -10 1 36.96 2.92 2.4286 1 4 2 36.61 1.28 2.4511 0 10 1 36.86 1.46 2.4351 3 0 0 36.90 4.29 2.4321 1 9 1 36.93 5.84 2.4303 2 8 0 37.16 2.62 2.4156 2 6 1 37.11 1.69 2.4189 3 1 0 36.70 1.63 2.4449 -2 3 2 37.16 3.83 2.4159 -2 8 1 37.98 1.43 2.3658 -3 3 0 37.49 2.64 2.3956 -3 1 1 37.73 4.00 2.3809 -3 -1 1 38.04 1.46 2.3621 0 7 2 38.49 1.04 2.3354 -2 9 0 37.83 3.42 2.3744 -3 2 1 37.69 1.71 2.3830 -2 4 2 38.57 2.08 2.3311 -2 -8 1 38.31 3.11 2.3460 -3 -2 1 38.95 1.06 2.3087 -3 4 0 38.58 2.55 2.3301 -2 -4 2 38.49 4.70 2.3357 -3 3 1 39.67 1.53 2.2684 1 -10 1 39.19 3.11 2.2954 -3 -3 1 39.61 1.27 2.2720 2 9 0 39.82 3.13 2.2606 0 11 1 40.21 2.19 2.2396 -3 5 0 40.86 1.92 2.2054 2 -8 1 40.98 1.15 2.1992 0 -8 2 41.25 1.48 2.1853 -2 10 0 41.11 1.53 2.1925 3 5 0 41.72 1.46 2.1620 -3 6 0 42.05 2.45 2.1457 -1 12 0 42.55 1.22 2.1215 3 1 1 43.46 2.09 2.0793 -3 7 0 44.43 1.19 2.0363 2 -4 2 43.88 1.30 2.0604 2 9 1 43.83 1.88 2.0626 -3 7 1 43.92 1.98 2.0585 -3 0 2 44.64 4.71 2.0269 3 7 0 43.93 1.91 2.0580 -3 1 2 44.19 2.34 2.0468 -3 -1 2 45.84 5.96 1.9768 1 -12 1 46.05 1.31 1.9683 0 -10 2 47.06 1.24 1.9283 2 -6 2 46.00 5.98 1.9702 1 12 1 45.76 1.83 1.9802 -3 8 1 46.47 1.18 1.9516 2 10 1 46.32 1.31 1.9576 -1 3 3 47.22 2.20 1.9222 2 6 2 47.57 3.27 1.9089 -3 9 0 47.14 1.24 1.9252 -1 4 3 47.38 3.12 1.9163 -3 -8 1 48.49 3.32 1.8750 2 -11 1 47.86 1.44 1.8982 -3 -5 2 48.11 1.41 1.8887 -2 12 1 47.96 1.05 1.8945 -1 11 2 49.33 2.75 1.8449 0 -5 3 48.95 1.33 1.8584 -1 14 0 48.75 2.19 1.8656 0 5 3 49.74 1.74 1.8307 1 1 3 49.20 2.28 1.8494 2 11 1 50.58 1.06 1.8021 2 -8 2 49.67 2.14 1.8330 1 14 0 49.83 1.48 1.8276 -2 -12 1 49.64 1.70 1.8342 -3 -9 1 50.86 6.04 1.7930 1 -3 3 49.53 1.23 1.8381 -1 6 3 50.16 1.30 1.8164 -4 2 0 50.67 6.84 1.7993 1 3 3 49.49 1.63 1.8392 -3 7 2 51.55 1.79 1.7706 1 -11 2 50.39 1.58 1.8085 -4 -2 1 50.41 1.63 1.8080 -4 3 1 50.79 1.30 1.7953 0 12 2 51.43 1.06 1.7744 -4 4 0 51.27 1.78 1.7796 1 11 2 51.13 2.26 1.7842 -4 -3 1 51.15 2.77 1.7836 -4 4 1 51.04 1.86 1.7869 -2 5 3 52.10 2.03 1.7533 -4 -4 1 54.23 1.07 1.6892 0 -8 3 53.32 1.53 1.7159 -4 6 1 53.73 3.54 1.7038 -1 13 2 55.74 1.86 1.6471 1 -7 3 55.30 3.60 1.6592 -1 -13 2 55.32 2.12 1.6586 1 7 3 54.34 1.97 1.6861 -4 0 2 54.55 1.05 1.6803 -4 2 2 57.20 1.50 1.6084 1 -13 2 56.17 1.34 1.6354 -2 -14 1 56.36 1.04 1.6304 -4 8 1 57.55 1.13 1.5996 0 -16 1 56.90 1.57 1.6163 1 13 2 56.99 1.19 1.6140 0 16 1 57.42 1.24 1.6029 0 10 3 59.41 2.64 1.5538 1 -9 3 58.17 1.36 1.5839 2 14 1 58.13 1.90 1.5849 -4 -8 1 58.89 2.33 1.5662 1 9 3 59.86 1.02 1.5431 -3 -11 2 60.98 1.17 1.5176 -2 16 1 62.52 1.55 1.4838 0 0 4 63.87 1.30 1.4556 2 -16 1 62.67 1.50 1.4807 -3 13 2 65.48 1.15 1.4238 3 -11 2 65.22 1.18 1.4288 -3 -13 2 64.86 1.13 1.4358 -5 5 1 66.19 1.32 1.4102 3 11 2 65.94 1.74 1.4149 0 6 4 66.62 1.25 1.4022 4 10 1 69.61 1.15 1.3491 -5 -5 2 73.90 1.15 1.2810 -1 19 2 75.83 1.07 1.2531 -1 -19 2 74.90 1.38 1.2663 -2 16 3 77.65 1.42 1.2283 -2 -16 3 77.65 1.42 1.2283 -2 -16 3 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.