Eakerite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern of R060319 Kossiakoff A A, Leavens P B American Mineralogist 61 (1976) 956-962 The crystal structure of eakerite, a calcium-tin silicate CELL PARAMETERS: 15.8250 7.6980 7.4450 90.000 101.292 90.000 SPACE GROUP: P2_1/a ATOM X Y Z OCCUPANCY ISO(B) Sn 0.00000 0.00000 0.00000 1.000 0.660 Ca 0.30050 0.31110 0.00210 1.000 0.788 Al 0.27080 0.02200 -0.31720 1.000 0.469 Si 0.45540 0.16970 0.71320 1.000 0.426 Si 0.16610 0.14450 0.03910 1.000 0.458 Si 0.49320 0.21810 0.33490 1.000 0.416 O 0.01970 0.19930 -0.16140 1.000 0.970 O 0.50510 -0.01640 -0.26940 1.000 1.132 O 0.21430 0.30830 0.23720 1.000 0.901 O 0.12250 0.02340 0.14110 1.000 0.925 O 0.36250 0.14480 -0.23160 1.000 0.869 O 0.44700 0.33400 0.16450 1.000 0.877 O 0.23620 0.03490 0.44880 1.000 0.946 Wa 0.31930 0.00300 0.15310 1.000 1.359 OH 0.20170 0.10310 -0.18110 1.000 0.982 O 0.43970 0.22810 0.49770 1.000 1.001 O 0.09220 0.22160 0.41240 1.000 1.012 X-RAY WAVELENGTHS: 1.540562 1.544390 BOUNDS ON TWO THETA: 5.0 90.0 LIMITS IMPOSED ON THE INDICES ARE: +/- 14 +/- 7 +/- 6 MAX. ABS. INTENSITY / VOLUME**2: 12.10238505 The INTENSITY cut off value is 1.00 2-THETA INTENSITY D-SPACING H K L 11.39 / 11.42 19.06 / 9.53 7.7593 2 0 0 12.11 / 12.14 100.00 / 50.00 7.3009 0 0 1 12.83 / 12.86 36.61 / 18.30 6.8962 1 1 0 14.93 / 14.97 6.06 / 3.03 5.9280 -2 0 1 16.21 / 16.25 4.19 / 2.10 5.4649 2 1 0 16.89 / 16.93 46.92 / 23.46 5.2464 -1 1 1 18.23 / 18.27 7.19 / 3.59 4.8631 2 0 1 18.43 / 18.48 99.47 / 49.74 4.8088 1 1 1 20.67 / 20.72 2.49 / 1.24 4.2935 3 1 0 22.23 / 22.29 17.20 / 8.60 3.9956 -3 1 1 22.90 / 22.96 47.19 / 23.59 3.8797 4 0 0 23.80 / 23.86 7.54 / 3.77 3.7358 1 2 0 24.82 / 24.88 2.06 / 1.03 3.5846 -2 0 2 25.69 / 25.76 5.24 / 2.62 3.4645 4 1 0 25.70 / 25.77 2.75 / 1.38 3.4632 3 1 1 25.82 / 25.88 1.71 / 0.86 3.4481 2 2 0 26.15 / 26.22 9.35 / 4.67 3.4048 0 2 1 26.26 / 26.32 5.03 / 2.52 3.3912 -1 2 1 26.59 / 26.66 58.91 / 29.46 3.3490 -1 1 2 27.01 / 27.08 1.80 / 0.90 3.2984 0 1 2 27.42 / 27.49 3.96 / 1.98 3.2495 -2 1 2 27.61 / 27.68 33.54 / 16.77 3.2282 -2 2 1 28.62 / 28.70 13.79 / 6.89 3.1161 1 1 2 28.89 / 28.96 3.19 / 1.60 3.0880 3 2 0 29.40 / 29.48 1.80 / 0.90 3.0352 -3 1 2 29.57 / 29.65 45.36 / 22.68 3.0181 2 2 1 30.41 / 30.48 3.16 / 1.58 2.9374 4 1 1 31.04 / 31.12 1.99 / 1.00 2.8786 5 1 0 31.24 / 31.32 1.64 / 0.82 2.8611 -5 1 1 32.34 / 32.42 9.45 / 4.73 2.7660 -4 1 2 32.75 / 32.83 3.98 / 1.99 2.7324 4 2 0 33.36 / 33.45 1.79 / 0.90 2.6834 -4 2 1 33.48 / 33.56 1.09 / 0.55 2.6747 -1 2 2 34.15 / 34.24 15.10 / 7.55 2.6232 -2 2 2 34.42 / 34.50 11.55 / 5.78 2.6037 -6 0 1 34.65 / 34.74 9.62 / 4.81 2.5864 6 0 0 34.72 / 34.81 1.83 / 0.92 2.5818 3 1 2 35.43 / 35.52 2.59 / 1.30 2.5316 1 3 0 35.51 / 35.60 23.32 / 11.66 2.5260 5 1 1 36.03 / 36.12 11.16 / 5.58 2.4910 -5 1 2 36.43 / 36.53 1.16 / 0.58 2.4639 -2 0 3 36.62 / 36.72 4.13 / 2.07 2.4518 6 1 0 36.90 / 37.00 4.33 / 2.17 2.4336 0 0 3 37.11 / 37.20 1.82 / 0.91 2.4208 0 3 1 37.19 / 37.28 3.23 / 1.62 2.4159 -1 3 1 37.37 / 37.47 8.33 / 4.16 2.4044 2 2 2 37.96 / 38.05 1.21 / 0.61 2.3686 1 3 1 38.10 / 38.19 10.07 / 5.03 2.3603 -1 1 3 38.30 / 38.39 20.24 / 10.12 2.3484 -4 2 2 38.78 / 38.88 3.33 / 1.66 2.3204 0 1 3 39.13 / 39.23 14.18 / 7.09 2.3003 6 0 1 39.16 / 39.26 15.20 / 7.60 2.2987 3 3 0 39.64 / 39.75 5.74 / 2.87 2.2715 -4 0 3 39.68 / 39.78 1.42 / 0.71 2.2695 2 3 1 40.05 / 40.15 19.16 / 9.58 2.2494 -3 3 1 41.07 / 41.17 7.80 / 3.90 2.1961 5 2 1 41.41 / 41.52 3.68 / 1.84 2.1786 -4 1 3 41.84 / 41.95 3.27 / 1.63 2.1571 -7 1 1 41.85 / 41.96 2.14 / 1.07 2.1566 -6 2 1 42.05 / 42.16 1.30 / 0.65 2.1468 6 2 0 42.20 / 42.31 2.09 / 1.04 2.1399 3 3 1 42.39 / 42.50 2.00 / 1.00 2.1304 7 1 0 42.78 / 42.89 4.00 / 2.00 2.1121 -1 3 2 43.05 / 43.17 1.30 / 0.65 2.0993 0 3 2 43.39 / 43.50 15.39 / 7.70 2.0838 5 1 2 43.58 / 43.69 5.41 / 2.71 2.0752 -2 2 3 44.11 / 44.23 2.90 / 1.45 2.0512 -5 1 3 44.59 / 44.71 2.75 / 1.37 2.0302 -3 2 3 44.68 / 44.80 10.39 / 5.20 2.0263 -3 3 2 45.02 / 45.13 2.38 / 1.19 2.0121 -7 1 2 45.39 / 45.51 2.25 / 1.12 1.9964 4 3 1 45.89 / 46.01 1.19 / 0.59 1.9760 -6 0 3 45.92 / 46.04 2.87 / 1.44 1.9746 6 2 1 46.00 / 46.12 2.58 / 1.29 1.9712 2 3 2 46.38 / 46.50 3.35 / 1.68 1.9563 -4 2 3 46.56 / 46.69 1.94 / 0.97 1.9489 7 1 1 46.82 / 46.94 4.67 / 2.33 1.9389 6 0 2 47.19 / 47.31 4.12 / 2.06 1.9245 0 4 0 47.46 / 47.59 2.48 / 1.24 1.9139 -6 1 3 47.53 / 47.65 3.33 / 1.66 1.9115 2 2 3 47.53 / 47.66 1.40 / 0.70 1.9113 -8 1 1 47.57 / 47.70 2.21 / 1.10 1.9099 1 4 0 47.81 / 47.94 4.04 / 2.02 1.9008 4 0 3 48.37 / 48.50 2.37 / 1.19 1.8802 6 1 2 48.57 / 48.69 6.61 / 3.31 1.8731 3 3 2 48.71 / 48.84 2.68 / 1.34 1.8679 2 4 0 49.57 / 49.70 1.02 / 0.51 1.8375 -5 3 2 49.70 / 49.83 1.35 / 0.67 1.8330 -7 2 2 49.77 / 49.90 1.43 / 0.71 1.8305 -2 4 1 49.92 / 50.06 3.27 / 1.64 1.8252 0 0 4 50.12 / 50.25 6.68 / 3.34 1.8186 -8 1 2 50.56 / 50.70 4.05 / 2.03 1.8037 3 4 0 50.99 / 51.13 2.35 / 1.17 1.7895 2 4 1 51.05 / 51.19 1.10 / 0.55 1.7876 -3 1 4 51.19 / 51.32 1.60 / 0.80 1.7831 -1 3 3 51.37 / 51.51 2.42 / 1.21 1.7772 -7 1 3 52.04 / 52.18 1.13 / 0.56 1.7559 -8 2 1 52.27 / 52.41 5.67 / 2.83 1.7488 -3 3 3 52.44 / 52.58 2.43 / 1.22 1.7433 8 1 1 52.80 / 52.95 5.15 / 2.58 1.7323 8 2 0 52.83 / 52.97 3.18 / 1.59 1.7316 6 2 2 52.96 / 53.10 1.66 / 0.83 1.7277 1 1 4 52.97 / 53.12 4.19 / 2.09 1.7271 1 3 3 53.08 / 53.22 5.50 / 2.75 1.7240 4 4 0 53.49 / 53.64 1.31 / 0.66 1.7115 5 1 3 53.70 / 53.84 1.04 / 0.52 1.7055 7 1 2 53.74 / 53.88 1.72 / 0.86 1.7043 4 2 3 54.04 / 54.18 1.24 / 0.62 1.6956 -2 4 2 54.21 / 54.36 6.98 / 3.49 1.6905 -7 3 1 54.36 / 54.51 1.01 / 0.51 1.6862 -5 1 4 54.47 / 54.62 4.21 / 2.11 1.6831 -8 2 2 54.67 / 54.81 3.36 / 1.68 1.6776 7 3 0 54.77 / 54.92 6.30 / 3.15 1.6745 -2 2 4 55.35 / 55.50 1.72 / 0.86 1.6585 -3 2 4 55.55 / 55.70 2.16 / 1.08 1.6529 -9 1 2 55.61 / 55.76 3.46 / 1.73 1.6514 -6 0 4 56.33 / 56.48 2.73 / 1.37 1.6320 2 4 2 56.67 / 56.82 1.84 / 0.92 1.6229 8 2 1 56.74 / 56.90 2.76 / 1.38 1.6210 6 0 3 56.86 / 57.01 1.15 / 0.58 1.6180 -7 3 2 56.99 / 57.14 3.77 / 1.88 1.6146 -6 1 4 57.01 / 57.16 1.88 / 0.94 1.6141 -4 4 2 57.44 / 57.60 10.28 / 5.14 1.6029 3 3 3 57.63 / 57.78 1.60 / 0.80 1.5982 -9 2 1 58.26 / 58.42 2.92 / 1.46 1.5823 -10 0 1 58.56 / 58.71 1.69 / 0.84 1.5751 9 1 1 58.62 / 58.78 1.05 / 0.52 1.5736 9 2 0 59.26 / 59.42 3.63 / 1.81 1.5581 2 2 4 59.52 / 59.68 1.15 / 0.58 1.5519 10 0 0 59.70 / 59.86 1.19 / 0.60 1.5476 -6 4 1 59.83 / 59.99 1.98 / 0.99 1.5446 -8 2 3 60.04 / 60.21 1.26 / 0.63 1.5395 4 0 4 60.19 / 60.35 1.38 / 0.69 1.5362 -7 1 4 61.00 / 61.17 1.38 / 0.69 1.5176 -6 2 4 61.04 / 61.21 1.34 / 0.67 1.5167 -2 4 3 61.56 / 61.73 2.07 / 1.04 1.5053 -1 5 1 61.85 / 62.02 1.24 / 0.62 1.4989 -3 4 3 62.07 / 62.24 3.73 / 1.87 1.4941 -3 3 4 62.09 / 62.26 2.28 / 1.14 1.4936 1 5 1 63.13 / 63.30 1.19 / 0.60 1.4716 7 1 3 63.26 / 63.44 1.50 / 0.75 1.4687 8 2 2 63.28 / 63.46 5.17 / 2.59 1.4684 -4 4 3 63.52 / 63.69 2.72 / 1.36 1.4634 -10 2 1 63.57 / 63.75 1.48 / 0.74 1.4623 -3 5 1 63.59 / 63.77 1.16 / 0.58 1.4619 -2 1 5 63.75 / 63.93 4.28 / 2.14 1.4586 1 3 4 63.96 / 64.14 2.52 / 1.26 1.4544 -1 1 5 64.20 / 64.37 3.00 / 1.50 1.4496 -9 3 1 64.75 / 64.93 1.06 / 0.53 1.4386 -4 1 5 65.12 / 65.31 1.03 / 0.51 1.4312 9 3 0 65.21 / 65.40 2.86 / 1.43 1.4294 4 2 4 65.26 / 65.44 3.42 / 1.71 1.4286 5 1 4 65.29 / 65.48 1.05 / 0.52 1.4279 9 1 2 65.57 / 65.75 3.46 / 1.73 1.4225 -1 5 2 66.08 / 66.27 1.56 / 0.78 1.4127 -9 3 2 66.25 / 66.43 3.89 / 1.94 1.4096 -5 1 5 66.55 / 66.74 1.27 / 0.64 1.4040 1 1 5 67.10 / 67.29 1.79 / 0.90 1.3937 -6 0 5 67.38 / 67.57 1.69 / 0.84 1.3887 -2 2 5 67.69 / 67.88 1.26 / 0.63 1.3830 -8 2 4 68.64 / 68.83 2.24 / 1.12 1.3662 8 4 0 68.81 / 69.00 1.21 / 0.61 1.3633 9 3 1 70.52 / 70.73 3.64 / 1.82 1.3343 5 5 1 70.84 / 71.05 2.66 / 1.33 1.3290 -5 5 2 71.41 / 71.62 1.85 / 0.93 1.3198 -11 1 3 71.49 / 71.69 1.04 / 0.52 1.3186 3 1 5 71.99 / 72.20 2.37 / 1.19 1.3106 8 4 1 72.39 / 72.59 3.01 / 1.50 1.3044 2 2 5 72.83 / 73.04 2.19 / 1.10 1.2975 -9 4 1 73.03 / 73.24 2.53 / 1.27 1.2945 7 3 3 73.79 / 74.01 2.33 / 1.17 1.2830 0 6 0 74.28 / 74.50 1.23 / 0.61 1.2757 2 4 4 74.79 / 75.01 1.37 / 0.68 1.2683 -8 4 3 75.01 / 75.23 1.13 / 0.56 1.2652 -11 2 3 75.06 / 75.28 1.19 / 0.59 1.2644 9 3 2 75.12 / 75.34 1.92 / 0.96 1.2636 0 6 1 75.15 / 75.37 1.07 / 0.54 1.2632 11 2 1 75.65 / 75.87 1.34 / 0.67 1.2560 1 6 1 75.75 / 75.97 3.09 / 1.55 1.2546 5 5 2 76.27 / 76.49 1.13 / 0.56 1.2474 -5 5 3 77.99 / 78.22 1.13 / 0.56 1.2241 -11 1 4 78.13 / 78.37 1.02 / 0.51 1.2222 -10 4 1 78.55 / 78.78 1.56 / 0.78 1.2168 0 0 6 79.23 / 79.47 1.46 / 0.73 1.2080 10 4 0 79.69 / 79.93 1.02 / 0.51 1.2022 4 4 4 79.73 / 79.97 1.10 / 0.55 1.2017 -13 1 1 83.28 / 83.53 2.58 / 1.29 1.1593 8 2 4 83.71 / 83.97 1.47 / 0.74 1.1544 -10 4 3 84.03 / 84.28 1.39 / 0.69 1.1509 -6 6 1 86.25 / 86.51 1.10 / 0.55 1.1268 8 4 3 86.43 / 86.70 1.04 / 0.52 1.1250 2 4 5 87.08 / 87.35 1.39 / 0.70 1.1182 -12 2 4 87.21 / 87.48 1.48 / 0.74 1.1169 -9 3 5 87.25 / 87.52 1.45 / 0.72 1.1165 11 1 3 87.65 / 87.92 1.02 / 0.51 1.1124 9 5 1 88.56 / 88.84 1.05 / 0.53 1.1033 -7 4 5 88.78 / 89.06 1.05 / 0.53 1.1011 4 0 6 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.