Ussingite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern R070562. Rossi G, Tazzoli V, Ungaretti L American Mineralogist 59 (1974) 335-340 The crystal structure of ussingite CELL PARAMETERS: 7.255147 7.686692 8.682198 90.79913 99.71864 122.5645 SPACE GROUP: P-1 X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 10.45 1.25 8.4892 0 0 1 13.64 54.13 6.5047 -1 1 0 13.80 36.00 6.4265 0 1 0 16.24 1.08 5.4665 0 -1 1 16.27 1.59 5.4552 -1 0 1 18.01 29.28 4.9309 1 -1 1 18.36 24.22 4.8385 0 1 1 20.95 50.59 4.2446 0 0 2 23.03 19.37 3.8637 -1 0 2 23.16 46.06 3.8426 -1 2 0 23.63 49.07 3.7671 0 -1 2 23.87 38.36 3.7293 -1 1 2 25.04 48.92 3.5579 -2 1 0 25.32 25.25 3.5194 1 1 0 25.30 12.95 3.5225 1 -2 1 25.36 7.57 3.5134 -2 1 1 25.48 16.39 3.4977 -1 -1 1 25.62 33.59 3.4793 -1 2 1 26.20 18.42 3.4025 1 -1 2 26.60 22.77 3.3526 0 1 2 27.43 10.45 3.2524 -2 2 0 27.77 6.18 3.2132 0 2 0 28.23 2.44 3.1629 1 0 2 28.40 23.77 3.1438 -2 2 1 28.44 29.50 3.1392 0 -2 1 28.90 25.30 3.0899 2 -1 1 29.29 15.73 3.0502 1 1 1 29.71 24.37 3.0083 -1 -1 2 29.74 17.31 3.0045 -2 1 2 29.90 100.00 2.9896 2 0 0 30.41 8.79 2.9405 2 -2 1 30.98 7.35 2.8870 0 2 1 31.15 1.67 2.8723 1 -2 2 31.67 3.62 2.8257 -1 2 2 32.77 53.54 2.7333 0 -2 2 32.84 1.17 2.7276 -2 0 2 32.94 3.11 2.7194 0 -1 3 32.99 39.80 2.7160 -2 2 2 33.25 8.81 2.6952 -1 1 3 35.72 10.89 2.5140 2 -1 2 35.85 25.04 2.5049 1 -1 3 36.15 14.77 2.4847 1 1 2 36.27 14.66 2.4771 0 1 3 36.88 12.02 2.4376 -2 1 3 36.90 3.75 2.4362 1 -3 1 37.04 11.11 2.4270 -2 3 1 37.17 2.06 2.4192 0 2 2 37.71 3.92 2.3858 -3 2 1 37.92 1.36 2.3730 1 0 3 38.00 5.39 2.3682 -1 -2 1 38.40 3.38 2.3445 1 2 0 38.84 1.75 2.3189 -2 -1 1 39.23 10.76 2.2966 1 -2 3 39.87 9.14 2.2609 -1 2 3 40.09 4.50 2.2490 -2 2 3 40.37 8.06 2.2340 2 0 2 40.80 8.24 2.2114 1 -3 2 41.25 9.18 2.1885 -2 3 2 42.09 2.30 2.1466 -1 0 4 42.18 2.53 2.1422 0 3 0 42.60 1.95 2.1223 0 0 4 42.82 1.40 2.1115 3 -1 1 43.21 4.28 2.0934 2 1 1 43.17 1.49 2.0955 0 -1 4 44.13 16.46 2.0522 3 -3 1 44.46 1.45 2.0375 -3 0 1 44.48 2.92 2.0364 2 -2 3 44.92 22.20 2.0175 0 3 1 45.29 2.29 2.0020 0 2 3 45.46 8.84 1.9949 -1 -1 4 45.68 3.63 1.9859 -2 1 4 45.79 2.17 1.9813 -2 -1 3 45.80 3.60 1.9808 -3 1 3 45.89 1.04 1.9775 -3 2 3 46.08 1.03 1.9696 -3 0 2 46.30 3.29 1.9607 1 -1 4 46.73 6.07 1.9436 0 1 4 47.03 13.05 1.9318 -2 0 4 47.30 2.12 1.9213 -2 4 0 48.41 2.38 1.8799 1 0 4 48.39 5.28 1.8806 2 -4 1 48.66 1.91 1.8708 1 -2 4 48.76 1.21 1.8673 -2 4 1 49.16 3.64 1.8531 2 -3 3 49.39 3.38 1.8450 -1 2 4 50.05 2.16 1.8222 -1 4 0 50.05 1.70 1.8222 0 -3 3 50.12 1.51 1.8196 -1 3 3 50.37 1.89 1.8113 1 -4 1 50.49 4.54 1.8073 -4 2 1 50.92 1.26 1.7929 -2 -2 1 51.41 1.32 1.7771 3 -4 1 51.95 1.21 1.7597 2 2 0 51.95 4.64 1.7599 -4 3 0 52.05 11.37 1.7567 -4 2 2 52.16 1.86 1.7533 -1 4 1 52.30 15.11 1.7488 -2 -2 2 52.60 1.02 1.7397 -2 4 2 52.69 2.04 1.7367 1 3 0 53.09 4.24 1.7247 1 -4 2 53.19 1.60 1.7216 -3 2 4 53.38 4.70 1.7160 -3 4 2 53.93 3.78 1.6997 -3 -1 1 54.09 7.78 1.6952 0 -1 5 54.46 10.89 1.6844 -1 1 5 54.79 1.16 1.6752 -4 1 2 54.82 8.40 1.6743 3 0 2 54.89 10.21 1.6724 -4 1 0 55.22 1.67 1.6630 3 1 0 55.93 1.40 1.6436 3 -3 3 56.37 4.20 1.6319 3 -1 3 56.53 10.33 1.6275 -4 4 1 56.85 1.73 1.6192 2 1 3 56.96 7.54 1.6163 0 -4 1 57.09 1.20 1.6128 0 3 3 57.09 1.22 1.6128 0 -3 4 57.55 2.14 1.6011 -1 -3 3 57.52 2.99 1.6018 2 -4 3 57.58 1.52 1.6004 -4 3 3 57.97 1.53 1.5905 1 -4 3 58.14 1.25 1.5861 0 -2 5 58.33 4.68 1.5816 4 -1 1 58.33 1.14 1.5814 2 0 4 58.49 5.49 1.5776 -2 4 3 58.56 2.24 1.5757 -3 4 3 58.73 2.19 1.5717 3 1 1 58.76 1.25 1.5709 -2 2 5 58.86 1.45 1.5684 4 -4 1 59.11 2.27 1.5625 1 -2 5 59.90 3.19 1.5437 -1 2 5 60.62 1.74 1.5271 -3 5 0 60.84 1.55 1.5220 -2 5 0 61.59 1.20 1.5052 -1 -2 5 61.73 1.20 1.5023 -4 2 4 61.82 1.90 1.5002 3 -5 1 62.01 1.53 1.4961 -3 2 5 62.07 1.63 1.4948 4 0 0 62.43 1.84 1.4870 -2 5 1 62.78 3.52 1.4795 -1 4 3 62.78 1.28 1.4796 0 -4 3 63.12 3.78 1.4724 3 -2 4 63.22 3.14 1.4703 4 -4 2 63.49 2.09 1.4646 -4 1 4 63.77 1.71 1.4590 4 -1 2 64.08 2.50 1.4526 1 2 4 64.39 6.50 1.4463 -1 0 6 64.40 1.33 1.4462 3 -3 4 64.54 4.09 1.4435 0 4 2 64.46 4.40 1.4449 1 -3 5 64.68 1.34 1.4406 -4 5 0 64.70 4.34 1.4401 1 -4 4 64.89 1.45 1.4365 -2 -3 1 64.98 1.08 1.4346 -4 5 1 65.47 3.81 1.4252 -2 3 5 65.50 1.29 1.4246 3 -1 4 65.56 2.60 1.4233 -3 4 4 65.70 1.46 1.4207 0 -3 5 66.01 1.41 1.4147 2 1 4 66.00 2.14 1.4149 0 0 6 66.08 1.05 1.4135 -2 5 2 66.55 1.14 1.4046 -5 4 1 66.97 1.56 1.3969 -2 0 6 67.28 2.35 1.3911 -1 -4 1 67.94 1.96 1.3791 -5 4 2 68.27 8.01 1.3734 5 -3 1 68.37 1.03 1.3715 -1 -4 2 68.81 5.81 1.3638 -4 0 4 69.07 2.57 1.3594 -2 -2 5 69.37 5.59 1.3541 2 3 1 69.29 2.33 1.3555 -4 2 5 69.24 1.57 1.3565 3 -4 4 70.29 5.27 1.3387 -5 1 1 70.33 4.67 1.3381 3 -5 3 70.59 5.83 1.3337 -4 -1 1 70.74 2.08 1.3313 -1 4 4 70.88 1.67 1.3289 -4 -1 2 70.87 1.52 1.3291 -2 -1 6 70.99 1.30 1.3271 3 2 1 71.00 4.08 1.3270 -1 -3 5 71.10 1.96 1.3255 -3 1 6 71.21 4.00 1.3236 1 -5 3 71.46 1.21 1.3196 -1 -4 3 71.46 3.07 1.3196 -4 3 5 71.62 4.64 1.3170 -2 5 3 71.65 6.56 1.3165 1 0 6 71.67 2.18 1.3162 -4 5 3 72.30 1.46 1.3064 4 1 0 72.35 2.11 1.3056 -5 5 1 73.02 1.77 1.2952 0 -5 1 73.41 1.85 1.2893 3 -2 5 73.50 1.48 1.2879 -3 0 6 73.67 1.11 1.2853 0 5 0 73.63 1.25 1.2859 -5 2 4 73.72 1.27 1.2846 -3 -2 4 74.28 1.52 1.2763 3 -3 5 74.45 2.13 1.2738 1 2 5 75.62 2.06 1.2570 4 -2 4 75.71 1.07 1.2557 0 3 5 76.80 1.88 1.2406 2 -1 6 76.95 1.37 1.2385 0 2 6 77.03 2.71 1.2375 1 -5 4 77.38 1.15 1.2327 4 -4 4 77.57 1.77 1.2301 0 -5 3 77.61 2.97 1.2296 -5 5 3 77.83 2.09 1.2268 -4 5 4 78.25 2.61 1.2212 -1 -1 7 78.62 2.45 1.2164 -2 1 7 79.14 1.74 1.2096 0 4 4 80.00 1.39 1.1988 5 -3 3 80.23 1.20 1.1960 -5 3 5 80.74 1.43 1.1896 -2 -4 1 80.89 2.25 1.1878 5 -4 3 81.00 1.16 1.1865 2 0 6 82.67 2.34 1.1667 1 4 3 85.15 1.12 1.1389 -4 -2 3 85.09 1.18 1.1396 5 -5 3 86.74 1.32 1.1221 -3 -3 4 87.10 1.23 1.1183 0 5 3 89.58 2.01 1.0937 -3 -1 7 89.66 3.46 1.0929 5 0 2 89.78 1.78 1.0917 -4 1 7 89.78 1.78 1.0917 -4 1 7 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.