Chevkinite-(Ce) Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R060282 Yang Z, Fleck M, Smith M, Tao K, Song R, Zhang P European Journal of Mineralogy 14 (2002) 969-975 The crystal structure of natural Fe-rich chevkinite-(Ce) CELL PARAMETERS: 13.36800 5.724300 11.04100 90.00000 100.5160 90.00000 SPACE GROUP: C2/m X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 8.14 19.87 10.8574 0 0 1 13.46 4.84 6.5750 2 0 0 14.40 1.82 6.1489 -2 0 1 16.32 36.14 5.4287 0 0 2 16.87 1.43 5.2535 1 1 0 16.99 5.74 5.2143 2 0 1 18.20 49.11 4.8718 -1 1 1 19.17 2.22 4.6258 -2 0 2 19.29 65.00 4.5981 1 1 1 22.65 4.60 3.9223 -1 1 2 24.41 1.06 3.6435 1 1 2 24.58 20.68 3.6191 0 0 3 25.57 20.36 3.4816 3 1 0 25.68 36.60 3.4662 -3 1 1 28.02 100.00 3.1826 3 1 1 28.33 75.54 3.1476 -3 1 2 28.89 26.70 3.0885 -1 1 3 29.02 37.97 3.0744 -4 0 2 29.79 39.90 2.9969 4 0 1 30.28 4.49 2.9492 2 0 3 31.00 22.13 2.8828 1 1 3 31.19 61.42 2.8653 0 2 0 32.29 10.08 2.7705 0 2 1 32.50 56.20 2.7532 3 1 2 32.97 67.40 2.7143 0 0 4 32.96 82.32 2.7156 -3 1 3 33.24 17.90 2.6931 -4 0 3 34.11 11.63 2.6267 2 2 0 34.37 13.42 2.6071 4 0 2 34.51 6.37 2.5972 -2 2 1 35.40 36.17 2.5340 0 2 2 35.73 8.38 2.5112 2 2 1 36.08 1.42 2.4874 -1 1 4 36.87 3.02 2.4359 -2 2 2 37.10 2.44 2.4211 -5 1 1 37.60 4.75 2.3903 5 1 0 38.38 10.20 2.3435 3 1 3 38.40 2.05 2.3422 1 1 4 38.91 6.64 2.3129 -4 0 4 38.94 4.43 2.3111 -3 1 4 40.11 6.93 2.2465 0 2 3 40.29 12.07 2.2368 4 0 3 40.43 10.06 2.2296 -6 0 1 41.46 4.52 2.1764 -6 0 2 41.60 41.77 2.1694 -4 2 1 41.79 22.00 2.1600 4 2 0 43.12 10.62 2.0961 -4 2 2 43.58 8.07 2.0754 6 0 1 43.67 8.57 2.0710 4 2 1 43.83 1.21 2.0638 5 1 2 43.89 3.20 2.0611 -1 1 5 44.03 3.07 2.0551 2 2 3 44.15 5.47 2.0496 -6 0 3 45.23 15.29 2.0031 3 1 4 45.86 19.65 1.9771 -3 1 5 46.02 44.53 1.9705 0 2 4 46.17 1.81 1.9646 -5 1 4 46.23 3.44 1.9624 -4 2 3 46.26 15.61 1.9612 -2 2 4 46.35 3.03 1.9573 2 0 5 46.37 13.25 1.9566 1 1 5 47.09 4.02 1.9284 4 2 2 48.63 3.73 1.8708 -1 3 1 49.03 1.03 1.8566 5 1 3 49.10 7.48 1.8541 1 3 1 49.69 1.83 1.8333 -2 0 6 50.03 12.36 1.8217 2 2 4 50.39 1.60 1.8096 0 0 6 50.68 5.23 1.7997 -4 2 4 50.93 15.58 1.7915 -7 1 2 51.13 15.83 1.7851 7 1 0 51.81 7.31 1.7632 4 2 3 51.92 4.38 1.7596 -6 2 1 52.19 2.30 1.7512 3 3 0 52.26 4.61 1.7492 -3 3 1 52.53 5.49 1.7408 6 2 0 52.62 6.48 1.7381 6 0 3 52.63 2.80 1.7377 -2 2 5 52.81 4.09 1.7321 3 1 5 52.78 13.48 1.7331 -6 2 2 52.86 4.30 1.7306 0 2 5 53.03 11.65 1.7253 -4 0 6 53.50 2.82 1.7115 -3 1 6 53.58 12.41 1.7091 3 3 1 53.62 8.39 1.7080 -6 0 5 53.76 7.81 1.7037 -3 3 2 54.09 3.80 1.6941 -1 3 3 54.55 12.70 1.6808 6 2 1 54.75 7.83 1.6754 4 0 5 54.82 2.46 1.6734 1 1 6 54.88 10.33 1.6715 -8 0 1 55.04 8.97 1.6670 -6 2 3 55.26 6.53 1.6611 5 1 4 55.28 4.32 1.6604 -8 0 2 55.38 3.44 1.6576 1 3 3 56.27 3.36 1.6335 -4 2 5 56.33 10.62 1.6318 3 3 2 56.47 9.84 1.6282 -7 1 4 56.63 12.91 1.6239 -3 3 3 57.02 7.31 1.6139 7 1 2 57.06 1.42 1.6128 -8 0 3 57.62 2.62 1.5985 4 2 4 57.90 3.75 1.5913 6 2 2 58.61 1.33 1.5738 -6 2 4 59.56 4.89 1.5511 0 0 7 59.94 1.24 1.5419 -6 0 6 60.15 1.06 1.5372 -8 0 4 60.34 1.53 1.5327 3 3 3 60.46 7.08 1.5300 0 2 6 61.02 5.93 1.5173 3 1 6 60.98 3.57 1.5183 -1 1 7 61.11 1.07 1.5153 -7 1 5 61.76 12.04 1.5009 -3 1 7 61.87 1.96 1.4985 8 0 2 62.82 2.85 1.4781 -4 2 6 62.99 2.24 1.4746 4 0 6 63.75 1.49 1.4587 1 1 7 64.36 2.40 1.4463 4 2 5 64.42 2.20 1.4451 -8 0 5 64.61 3.40 1.4414 2 2 6 65.05 17.45 1.4327 0 4 0 65.47 4.19 1.4245 3 3 4 65.96 5.86 1.4150 -3 3 5 66.37 3.08 1.4074 1 3 5 66.41 1.13 1.4065 -9 1 3 66.47 3.52 1.4054 -8 2 3 66.63 2.15 1.4024 8 0 3 66.80 3.52 1.3993 -7 1 6 67.56 4.19 1.3854 8 2 1 67.62 5.88 1.3843 7 1 4 67.57 1.43 1.3852 0 4 2 68.05 2.78 1.3766 6 2 4 69.07 2.58 1.3588 -9 1 4 69.16 5.88 1.3572 0 0 8 69.13 7.00 1.3578 -6 2 6 70.05 5.38 1.3421 -7 3 2 70.21 4.94 1.3394 7 3 0 70.66 1.25 1.3321 0 4 3 70.92 2.79 1.3278 8 2 2 71.62 1.39 1.3166 3 3 5 71.63 1.90 1.3163 -10 0 3 72.77 4.10 1.2986 -4 4 2 73.16 4.23 1.2926 4 4 1 73.25 1.06 1.2912 1 1 8 73.31 2.09 1.2903 -8 2 5 73.69 2.49 1.2846 5 3 4 74.16 1.72 1.2776 10 0 1 74.65 6.64 1.2705 6 2 5 74.74 4.02 1.2692 -7 3 4 74.89 9.06 1.2670 0 4 4 75.04 2.26 1.2648 -4 4 3 75.21 3.07 1.2624 7 3 2 75.40 1.03 1.2596 8 2 3 75.69 2.08 1.2556 4 4 2 75.89 5.47 1.2528 -6 2 7 77.81 3.80 1.2265 0 2 8 78.50 1.23 1.2175 -4 2 8 78.73 2.53 1.2145 3 3 6 78.69 1.20 1.2150 -1 3 7 79.03 1.09 1.2106 -10 2 2 79.06 4.20 1.2102 -10 2 1 79.38 2.74 1.2061 3 1 8 79.36 1.77 1.2064 4 4 3 79.39 5.28 1.2060 -3 3 7 79.45 2.29 1.2053 -6 4 1 80.25 3.52 1.1953 -3 1 9 80.41 4.17 1.1933 4 2 7 80.76 1.68 1.1891 -11 1 2 80.96 2.78 1.1866 -11 1 1 81.09 3.61 1.1850 -7 1 8 81.59 1.46 1.1790 6 4 1 81.72 1.16 1.1775 -11 1 3 81.99 1.14 1.1742 -6 4 3 82.16 2.51 1.1723 7 1 6 82.62 1.04 1.1669 10 2 1 83.45 1.04 1.1573 1 1 9 83.84 1.18 1.1530 -11 1 4 83.98 1.48 1.1514 -7 3 6 84.57 1.26 1.1449 -8 2 7 84.74 2.75 1.1430 7 3 4 84.85 1.21 1.1418 11 1 1 85.94 3.53 1.1301 -10 2 5 86.12 3.47 1.1282 10 2 2 86.09 1.22 1.1285 -9 3 4 87.06 2.09 1.1184 8 0 6 87.11 1.44 1.1179 -11 1 5 87.59 1.98 1.1130 8 2 5 87.71 1.22 1.1118 0 2 9 87.99 1.80 1.1089 -10 0 7 88.34 1.93 1.1055 6 4 3 88.54 1.02 1.1035 5 1 8 88.52 1.02 1.1037 11 1 2 88.67 3.70 1.1022 -4 4 6 89.11 2.06 1.0979 3 5 1 89.14 2.58 1.0977 -6 4 5 89.26 1.75 1.0965 -3 5 2 89.70 1.24 1.0922 -7 1 9 89.70 1.24 1.0922 -7 1 9 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.