Acanthite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R080016 Wiegers G A American Mineralogist 56 (1971) 1882-1888 The crystal structure of the low-temperature form of silver selenide CELL PARAMETERS: 4.224443 6.929726 7.865304 90.00000 99.65148 90.00000 SPACE GROUP: P2_1/n X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 17.24 1.50 5.1670 0 1 1 22.55 8.64 3.9558 -1 0 1 23.01 1.18 3.8770 0 0 2 25.02 2.18 3.5696 1 1 0 26.00 10.80 3.4366 1 0 1 26.01 18.97 3.4355 -1 1 1 26.41 19.47 3.3835 0 1 2 29.07 61.59 3.0788 1 1 1 31.60 66.39 2.8370 -1 1 2 33.71 47.56 2.6636 1 2 0 34.47 100.00 2.6064 -1 2 1 34.79 70.84 2.5835 0 2 2 36.65 38.71 2.4561 1 1 2 36.90 76.29 2.4400 1 2 1 37.19 41.83 2.4217 0 1 3 37.82 68.01 2.3823 -1 0 3 38.98 1.82 2.3143 -1 2 2 40.08 2.47 2.2529 -1 1 3 40.82 50.96 2.2138 0 3 1 43.28 7.49 2.0931 1 2 2 43.51 50.84 2.0823 2 0 0 43.75 16.54 2.0717 0 2 3 44.29 20.82 2.0477 1 0 3 45.54 10.30 1.9942 2 1 0 45.78 1.64 1.9844 0 3 2 46.28 15.59 1.9637 1 1 3 46.30 2.79 1.9631 -1 2 3 47.48 2.30 1.9171 1 3 1 47.88 13.22 1.9019 -2 1 2 48.83 13.78 1.8668 0 1 4 49.18 1.68 1.8543 -1 3 2 50.28 4.95 1.8165 -1 1 4 50.87 2.73 1.7967 -2 2 1 51.23 1.84 1.7848 2 2 0 52.89 7.03 1.7324 0 4 0 53.23 4.00 1.7223 0 3 3 53.38 21.72 1.7177 -2 2 2 53.37 7.90 1.7179 -2 1 3 54.27 3.06 1.6917 0 2 4 54.30 5.80 1.6907 0 4 1 55.11 1.69 1.6678 2 1 2 57.29 3.51 1.6093 1 1 4 57.67 2.88 1.5996 1 4 0 58.17 9.04 1.5869 -1 4 1 58.38 7.44 1.5817 0 4 2 58.51 6.86 1.5786 -2 2 3 59.51 7.75 1.5544 -2 3 1 59.83 1.06 1.5466 2 3 0 59.82 3.48 1.5470 1 4 1 60.14 8.90 1.5394 2 2 2 60.11 2.61 1.5402 -1 0 5 61.12 1.67 1.5171 -2 1 4 61.28 4.65 1.5134 -1 4 2 61.29 11.48 1.5134 0 1 5 61.73 1.35 1.5035 -1 1 5 62.59 2.58 1.4849 0 3 4 62.74 13.70 1.4818 2 3 1 63.35 10.32 1.4689 2 1 3 63.82 25.19 1.4592 -1 3 4 64.46 8.85 1.4462 1 4 2 64.82 3.21 1.4391 0 4 3 65.87 3.11 1.4185 -2 2 4 66.03 3.51 1.4155 0 2 5 66.50 4.32 1.4066 -2 3 3 66.79 2.07 1.4011 -1 4 3 68.01 2.39 1.3789 2 2 3 67.97 2.28 1.3796 1 0 5 68.84 1.37 1.3643 0 5 1 69.33 4.56 1.3559 -3 1 2 69.97 17.69 1.3451 1 3 4 70.47 6.39 1.3367 -2 4 1 70.77 3.22 1.3318 2 4 0 70.74 8.92 1.3322 -2 1 5 70.97 2.74 1.3284 3 0 1 71.58 6.91 1.3186 -3 0 3 72.25 3.45 1.3080 -1 5 1 72.47 5.53 1.3046 3 1 1 72.48 7.19 1.3045 -3 2 1 72.56 1.47 1.3032 -2 4 2 73.40 4.59 1.2903 2 1 4 73.51 2.85 1.2886 3 2 0 73.73 2.49 1.2854 1 5 1 74.41 4.71 1.2752 -1 1 6 74.74 3.47 1.2704 0 1 6 75.05 6.87 1.2659 -1 5 2 76.87 2.22 1.2404 3 2 1 76.96 1.75 1.2392 -2 4 3 77.96 4.47 1.2258 1 5 2 78.17 2.24 1.2230 3 1 2 78.29 3.23 1.2214 0 5 3 78.40 4.21 1.2200 2 4 2 78.78 1.19 1.2150 -1 2 6 79.05 1.22 1.2116 -3 1 4 79.10 2.55 1.2108 0 2 6 80.67 1.07 1.1912 -2 0 6 82.48 1.33 1.1696 3 2 2 83.06 4.00 1.1628 1 1 6 83.71 2.23 1.1555 0 4 5 83.76 3.02 1.1550 0 6 0 84.06 1.17 1.1516 3 3 1 84.96 1.70 1.1417 2 3 4 85.22 2.50 1.1388 2 1 5 86.02 2.08 1.1302 3 1 3 86.29 2.46 1.1274 0 5 4 86.38 4.03 1.1265 -2 2 6 87.17 1.44 1.1182 -3 1 5 87.19 1.04 1.1181 -1 0 7 87.69 2.10 1.1129 1 6 0 88.60 2.30 1.1038 -1 1 7 89.47 1.69 1.0953 2 2 5 89.53 1.83 1.0948 1 6 1 89.75 2.11 1.0927 -3 -4 1 89.82 1.09 1.0920 -2 5 3 89.82 1.09 1.0920 -2 5 3 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.