Uvite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R050301 MacDonald D J, Hawthorne F C The Canadian Mineralogist 33 (1995) 849-858 The crystal chemistry of Si=Al substitution in tourmaline Sample: T72 CELL PARAMETERS: 15.94900 15.94900 7.188000 90.00000 90.00000 120.0000 SPACE GROUP: R3m X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 13.87 9.12 6.3940 1 0 1 17.80 24.94 4.9894 0 2 1 19.29 24.57 4.6063 3 0 0 21.02 60.18 4.2303 2 1 1 22.30 64.39 3.9892 2 2 0 25.54 41.40 3.4894 0 1 2 26.35 14.32 3.3845 1 3 1 28.66 3.02 3.1157 4 0 1 29.63 21.52 3.0155 4 1 0 30.12 86.69 2.9676 1 2 2 30.82 8.20 2.9023 3 2 1 33.71 1.12 2.6594 3 3 0 34.14 8.00 2.6264 3 1 2 34.77 100.00 2.5808 0 5 1 36.00 2.89 2.4947 0 4 2 36.60 2.93 2.4555 2 4 1 37.41 8.22 2.4042 0 0 3 37.79 11.89 2.3810 2 3 2 38.36 21.02 2.3469 5 1 1 39.11 4.40 2.3031 6 0 0 39.13 1.33 2.3019 1 1 3 41.15 9.01 2.1937 5 0 2 41.68 14.33 2.1669 4 3 1 42.41 5.64 2.1313 0 3 3 42.41 6.53 2.1313 3 0 3 42.75 10.66 2.1152 4 2 2 43.97 16.60 2.0591 2 2 3 44.30 42.15 2.0445 1 5 2 44.80 6.34 2.0228 1 6 1 45.47 6.08 1.9946 4 4 0 47.28 36.79 1.9222 3 4 2 48.41 3.41 1.8799 1 4 3 49.19 7.36 1.8521 6 2 1 50.13 1.47 1.8195 6 1 2 51.07 3.40 1.7880 1 0 4 51.21 4.17 1.7835 3 3 3 52.43 1.57 1.7447 0 2 4 52.86 1.53 1.7316 0 7 2 53.30 1.13 1.7184 5 4 1 54.19 3.65 1.6922 2 6 2 55.22 14.47 1.6631 0 6 3 55.22 5.06 1.6631 6 0 3 55.92 16.88 1.6438 2 7 1 57.76 20.70 1.5957 5 5 0 57.65 2.98 1.5985 4 0 4 58.05 3.84 1.5884 4 5 2 58.46 2.22 1.5782 8 1 1 58.91 3.23 1.5674 3 2 4 59.30 1.08 1.5579 8 0 2 59.71 3.46 1.5482 4 6 1 60.26 4.70 1.5354 9 0 0 60.54 7.96 1.5290 7 2 2 60.94 1.08 1.5198 7 3 1 61.48 3.76 1.5078 8 2 0 61.37 16.87 1.5102 0 5 4 62.58 3.76 1.4838 2 4 4 62.96 2.12 1.4758 1 8 2 63.78 19.62 1.4588 5 1 4 63.90 4.86 1.4563 1 7 3 63.90 1.19 1.4563 7 1 3 64.16 4.50 1.4511 6 4 2 65.07 5.29 1.4330 7 4 0 64.98 4.41 1.4347 0 1 5 65.72 5.16 1.4202 6 5 1 65.72 1.92 1.4202 1 9 1 66.14 10.93 1.4123 4 3 4 66.26 1.23 1.4101 3 6 3 66.26 5.13 1.4101 6 3 3 68.05 1.43 1.3773 3 8 1 69.19 10.71 1.3572 10 0 1 69.96 2.23 1.3442 5 6 2 70.83 3.83 1.3297 6 6 0 70.73 2.63 1.3314 3 5 4 70.85 3.83 1.3295 5 5 3 70.75 3.93 1.3311 0 4 5 71.96 13.31 1.3116 10 1 0 71.86 1.42 1.3132 6 2 4 71.88 1.46 1.3130 2 3 5 72.22 3.14 1.3076 8 3 2 72.59 1.39 1.3019 5 7 1 73.34 1.14 1.2904 0 10 2 73.70 2.46 1.2849 8 4 1 74.20 4.19 1.2776 9 3 0 74.21 2.94 1.2774 2 8 3 74.11 11.47 1.2788 5 0 5 75.20 4.42 1.2629 5 4 4 76.32 1.50 1.2472 1 5 5 76.65 1.50 1.2426 7 5 2 77.02 4.53 1.2376 0 11 1 77.75 2.74 1.2278 4 8 2 78.11 1.27 1.2230 2 10 1 78.51 2.23 1.2178 3 4 5 79.74 2.20 1.2021 0 0 6 81.37 3.04 1.1820 11 1 1 82.98 1.40 1.1631 3 0 6 84.01 4.99 1.1514 10 1 3 86.05 1.34 1.1293 1 9 4 86.05 1.67 1.1293 6 5 4 86.16 2.72 1.1282 9 3 3 89.26 2.37 1.0968 10 0 4 89.27 1.08 1.0967 7 2 5 89.40 1.64 1.0954 3 3 6 89.40 1.64 1.0954 3 3 6 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.