Riebeckite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R060028 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: 9.811000 18.01300 5.326000 90.00000 103.6800 90.00000 SPACE GROUP: C2/m X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 9.79 3.11 9.0071 0 2 0 10.53 100.00 8.3735 1 1 0 17.45 1.26 5.0692 1 3 0 18.05 4.63 4.9026 -1 1 1 18.72 1.61 4.7286 2 0 0 19.67 16.28 4.5036 0 4 0 19.67 9.83 4.5041 0 2 1 21.88 2.61 4.0537 1 1 1 22.85 3.31 3.8849 -1 3 1 24.29 5.52 3.6572 -2 2 1 26.01 23.71 3.4198 1 3 1 26.13 1.97 3.4046 0 4 1 27.30 7.12 3.2612 2 4 0 28.70 38.66 3.1052 3 1 0 29.82 1.97 2.9907 -3 1 1 30.02 5.02 2.9713 2 2 1 32.01 9.69 2.7912 3 3 0 32.83 56.69 2.7236 1 5 1 33.04 10.01 2.7071 -3 3 1 33.83 2.10 2.6455 -1 1 2 34.44 19.52 2.6002 0 6 1 34.72 1.24 2.5799 2 4 1 35.17 31.14 2.5475 -2 0 2 38.00 1.54 2.3643 4 0 0 37.87 1.51 2.3725 3 5 0 38.28 1.51 2.3480 1 1 2 38.75 17.33 2.3202 -3 5 1 39.18 1.82 2.2961 -4 2 1 39.16 3.19 2.2971 -1 7 1 39.62 12.70 2.2714 -3 1 2 41.19 3.46 2.1886 1 7 1 41.51 17.39 2.1725 2 6 1 42.18 3.50 2.1394 -3 3 2 43.44 8.59 2.0802 2 0 2 44.66 9.77 2.0265 3 5 1 45.26 5.20 2.0010 -4 0 2 46.85 2.20 1.9364 4 2 1 48.12 2.09 1.8885 2 4 2 48.84 2.89 1.8624 -4 6 1 48.82 1.71 1.8630 -1 9 1 50.54 2.28 1.8037 1 9 1 50.60 3.03 1.8014 0 10 0 52.86 3.99 1.7298 -5 1 2 53.81 2.08 1.7015 -5 5 1 53.58 2.24 1.7081 -1 3 3 54.44 1.50 1.6834 2 10 0 54.30 2.91 1.6872 -2 8 2 54.89 1.20 1.6706 -3 9 1 55.47 13.13 1.6545 4 6 1 56.35 3.83 1.6306 4 8 0 57.00 6.82 1.6136 1 11 0 57.65 11.58 1.5971 -1 5 3 58.48 2.50 1.5762 6 0 0 58.58 2.63 1.5738 4 0 2 60.49 1.17 1.5287 1 9 2 61.03 4.93 1.5164 -6 0 2 60.70 8.96 1.5239 -2 6 3 61.56 3.46 1.5047 5 5 1 61.72 4.22 1.5012 0 12 0 61.71 1.70 1.5014 0 6 3 62.01 1.40 1.4949 2 2 3 62.18 1.06 1.4911 1 5 3 63.14 2.05 1.4708 -2 10 2 63.42 1.51 1.4649 -1 7 3 63.99 2.80 1.4533 3 11 0 64.80 1.73 1.4371 -6 4 2 65.01 1.29 1.4329 4 10 0 65.43 11.94 1.4247 -6 6 1 67.95 5.73 1.3779 5 1 2 69.72 1.82 1.3473 7 1 0 69.28 2.63 1.3547 -5 5 3 69.75 1.47 1.3467 5 3 2 69.37 2.76 1.3532 2 6 3 69.73 3.80 1.3470 1 11 2 70.63 2.14 1.3320 -3 11 2 70.89 3.07 1.3278 -1 1 4 72.84 4.31 1.2970 -7 5 1 72.64 1.31 1.3001 0 12 2 72.63 2.05 1.3003 0 0 4 72.66 1.21 1.2998 -1 3 4 73.08 6.26 1.2933 -2 12 2 74.39 2.61 1.2737 -4 0 4 80.50 4.15 1.1918 -5 11 2 81.30 1.08 1.1822 8 0 0 81.13 2.00 1.1841 2 0 4 87.80 1.22 1.1106 3 1 4 87.80 1.22 1.1106 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.