Riebeckite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R070002 Hawthorne F C The Canadian Mineralogist 16 (1978) 187-194 The crystal chemistry of the amphiboles. VIII. The crystal structure and site chemistry of fluor-riebeckite CELL PARAMETERS: 9.704258 17.94069 5.305271 90.00000 103.6911 90.00000 SPACE GROUP: C2/m X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 9.85 3.11 8.9703 0 2 0 10.59 100.00 8.3461 1 1 0 17.54 1.26 5.0501 1 3 0 18.22 4.63 4.8649 -1 1 1 18.80 1.61 4.7143 2 0 0 19.77 16.28 4.4852 0 4 0 19.85 9.83 4.4692 0 2 1 22.06 2.61 4.0247 1 1 1 23.02 3.31 3.8602 -1 3 1 24.45 5.52 3.6374 -2 2 1 26.20 23.71 3.3984 1 3 1 26.31 1.97 3.3836 0 4 1 27.42 7.12 3.2495 2 4 0 28.81 38.66 3.0957 3 1 0 29.98 1.97 2.9779 -3 1 1 30.22 5.02 2.9547 2 2 1 32.14 9.69 2.7820 3 3 0 33.04 56.69 2.7087 1 5 1 33.20 10.01 2.6956 -3 3 1 34.16 2.10 2.6223 -1 1 2 34.65 19.52 2.5864 0 6 1 34.93 1.24 2.5664 2 4 1 35.49 31.14 2.5271 -2 0 2 38.14 1.54 2.3571 4 0 0 38.03 1.51 2.3642 3 5 0 38.63 1.51 2.3288 1 1 2 38.95 17.33 2.3105 -3 5 1 39.35 1.82 2.2876 -4 2 1 39.38 3.19 2.2859 -1 7 1 39.92 12.70 2.2561 -3 1 2 41.43 3.46 2.1777 1 7 1 41.74 17.39 2.1619 2 6 1 42.49 3.50 2.1257 -3 3 2 43.80 8.59 2.0650 2 0 2 44.90 9.77 2.0171 3 5 1 45.55 5.20 1.9896 -4 0 2 47.09 2.20 1.9280 4 2 1 48.49 2.09 1.8757 2 4 2 49.06 2.89 1.8553 -4 6 1 49.08 1.71 1.8544 -1 9 1 50.81 2.28 1.7952 1 9 1 50.85 3.03 1.7941 0 10 0 53.16 3.99 1.7214 -5 1 2 54.04 2.08 1.6956 -5 5 1 54.11 2.24 1.6934 -1 3 3 54.69 1.50 1.6768 2 10 0 54.67 2.91 1.6774 -2 8 2 55.16 1.20 1.6636 -3 9 1 55.75 13.13 1.6475 4 6 1 56.60 3.83 1.6247 4 8 0 57.28 6.82 1.6071 1 11 0 58.18 11.58 1.5842 -1 5 3 58.70 2.50 1.5714 6 0 0 58.98 2.63 1.5647 4 0 2 60.90 1.17 1.5198 1 9 2 61.34 4.93 1.5099 -6 0 2 61.23 8.96 1.5125 -2 6 3 61.85 3.46 1.4987 5 5 1 62.02 4.22 1.4951 0 12 0 62.27 1.70 1.4897 0 6 3 62.57 1.40 1.4831 2 2 3 62.75 1.06 1.4794 1 5 3 63.54 2.05 1.4629 -2 10 2 63.98 1.51 1.4540 -1 7 3 64.29 2.80 1.4476 3 11 0 65.13 1.73 1.4310 -6 4 2 65.30 1.29 1.4276 4 10 0 65.70 11.94 1.4199 -6 6 1 68.38 5.73 1.3707 5 1 2 69.98 1.82 1.3432 7 1 0 69.78 2.63 1.3465 -5 5 3 70.19 1.47 1.3397 5 3 2 69.96 2.76 1.3435 2 6 3 70.19 3.80 1.3396 1 11 2 71.06 2.14 1.3254 -3 11 2 71.66 3.07 1.3158 -1 1 4 73.14 4.31 1.2928 -7 5 1 73.11 1.31 1.2932 0 12 2 73.41 2.05 1.2886 0 0 4 73.43 1.21 1.2884 -1 3 4 73.54 6.26 1.2867 -2 12 2 75.12 2.61 1.2636 -4 0 4 80.96 4.15 1.1865 -5 11 2 81.62 1.08 1.1786 8 0 0 81.98 2.00 1.1743 2 0 4 88.69 1.22 1.1020 3 1 4 88.69 1.22 1.1020 3 1 4 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.