Stillwellite-(Ce) Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R060899 Burns P C, Hawthorne F C, MacDonald D J, Ventura G D, Parodi G The Canadian Mineralogist 31 (1993) 147-152 The crystal structure of stillwellite CELL PARAMETERS: 6.841000 6.841000 6.702000 90.00000 90.00000 120.0000 SPACE GROUP: P3_1 X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 19.95 18.56 4.4516 0 1 1 19.95 81.43 4.4516 1 0 1 25.96 80.87 3.4318 1 1 0 29.22 5.63 3.0561 2 -1 1 29.22 5.55 3.0561 1 1 1 30.06 73.68 2.9720 2 0 0 30.56 84.10 2.9242 0 1 2 30.56 15.90 2.9242 1 0 2 32.95 11.17 2.7179 0 2 1 32.95 1.31 2.7179 2 0 1 37.45 8.17 2.4004 1 1 2 37.45 8.44 2.4004 2 -1 2 40.12 8.89 2.2466 1 2 0 40.12 8.73 2.2466 2 1 0 40.26 15.39 2.2392 0 0 3 40.51 4.44 2.2258 0 2 2 40.51 19.01 2.2258 2 0 2 42.41 20.79 2.1306 -1 3 1 42.41 21.26 2.1306 1 2 1 42.41 7.98 2.1306 2 1 1 42.41 8.43 2.1306 3 -1 1 43.15 2.74 2.0954 0 1 3 43.15 3.47 2.0954 1 0 3 45.77 4.94 1.9813 3 0 0 47.84 13.72 1.9004 3 0 1 48.52 9.60 1.8753 2 -1 3 48.52 9.63 1.8753 1 1 3 48.74 10.43 1.8674 -1 3 2 48.74 10.44 1.8674 1 2 2 48.74 22.55 1.8674 2 1 2 48.74 22.54 1.8674 3 -1 2 51.04 3.75 1.7884 0 2 3 51.04 1.76 1.7884 2 0 3 53.37 5.44 1.7159 2 2 0 53.68 15.37 1.7065 0 3 2 55.22 3.51 1.6625 4 -2 1 55.22 3.47 1.6625 2 2 1 55.73 11.91 1.6486 1 3 0 55.73 11.81 1.6486 3 1 0 56.95 2.47 1.6161 0 1 4 56.95 10.13 1.6161 1 0 4 57.53 1.20 1.6011 3 1 1 57.53 1.13 1.6011 4 -1 1 58.13 1.29 1.5860 1 2 3 58.13 1.26 1.5860 -1 3 3 58.13 1.69 1.5860 2 1 3 58.13 1.69 1.5860 3 -1 3 60.56 6.06 1.5280 4 -2 2 60.56 6.14 1.5280 2 2 2 61.43 3.06 1.5085 1 1 4 61.43 3.17 1.5085 2 -1 4 62.75 2.13 1.4799 -1 4 2 62.75 2.06 1.4799 1 3 2 63.60 5.93 1.4621 0 2 4 63.60 1.71 1.4621 2 0 4 64.15 5.35 1.4509 0 4 1 68.80 2.37 1.3637 2 3 0 68.80 2.41 1.3637 3 2 0 68.90 1.09 1.3620 2 2 3 68.90 1.05 1.3620 4 -2 3 69.08 10.02 1.3590 4 0 2 69.89 3.86 1.3451 3 -1 4 69.89 5.85 1.3451 1 2 4 69.89 3.65 1.3451 2 1 4 69.89 5.73 1.3451 -1 3 4 70.41 1.82 1.3364 2 3 1 70.41 1.80 1.3364 -2 5 1 70.95 2.76 1.3276 1 3 3 70.95 2.38 1.3276 4 -1 3 70.95 2.35 1.3276 3 1 3 70.95 2.76 1.3276 -1 4 3 72.02 3.08 1.3105 0 1 5 73.94 5.72 1.2811 3 0 4 74.45 2.76 1.2736 4 1 1 74.45 2.77 1.2736 5 -1 1 75.15 1.28 1.2635 2 3 2 75.15 3.90 1.2635 3 2 2 75.15 3.93 1.2635 5 -2 2 75.15 1.28 1.2635 -2 5 2 78.00 1.46 1.2242 2 0 5 79.10 5.76 1.2100 1 4 2 79.10 5.76 1.2100 -1 5 2 79.87 3.56 1.2002 2 2 4 79.87 3.55 1.2002 4 -2 4 80.79 6.37 1.1888 5 0 0 81.82 1.37 1.1765 3 1 4 81.82 1.33 1.1765 4 -1 4 83.85 1.18 1.1531 -1 3 5 83.85 1.59 1.1531 2 1 5 83.85 1.15 1.1531 1 2 5 83.85 1.52 1.1531 3 -1 5 84.67 1.01 1.1439 3 3 0 86.60 1.13 1.1233 2 4 0 86.60 1.13 1.1233 4 2 0 86.96 2.53 1.1196 0 0 6 87.62 5.76 1.1129 0 4 4 87.71 1.03 1.1120 0 3 5 87.71 1.03 1.1120 0 3 5 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.