Grandidierite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern R050196 Stephenson D A, Moore P B Acta Crystallographica B24 (1968) 1518-1522 The crystal structure of grandidierite, (Mg,Fe)Al3SiBO9 Locality: Fort Dauphin, Madagascar CELL PARAMETERS: 10.33310 10.98619 5.763016 90.00000 90.00000 90.00000 SPACE GROUP: Pbnm X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 11.78 1.63 7.5269 1 1 0 16.15 86.60 5.4931 0 2 0 17.18 89.21 5.1666 2 0 0 17.63 100.00 5.0331 1 0 1 18.30 9.98 4.8503 1 2 0 19.41 3.86 4.5758 1 1 1 22.37 4.14 3.9762 0 2 1 23.65 7.41 3.7635 2 2 0 23.99 34.73 3.7109 1 2 1 25.82 10.89 3.4517 1 3 0 27.14 2.43 3.2866 3 1 0 28.33 8.39 3.1511 2 2 1 29.91 2.41 2.9877 2 3 0 30.18 5.32 2.9612 1 3 1 30.23 16.02 2.9566 3 0 1 30.64 3.17 2.9181 3 2 0 31.04 12.10 2.8815 0 0 2 31.33 4.95 2.8550 3 1 1 32.60 56.18 2.7465 0 4 0 33.79 2.48 2.6524 2 3 1 34.45 17.68 2.6034 3 2 1 34.73 17.17 2.5833 4 0 0 35.17 18.45 2.5517 0 2 2 35.68 12.29 2.5166 2 0 2 36.23 1.25 2.4794 0 4 1 36.26 2.54 2.4773 1 2 2 37.29 1.35 2.4109 1 4 1 38.51 4.61 2.3377 4 2 0 39.38 19.94 2.2879 2 2 2 40.79 15.99 2.2120 1 3 2 41.68 24.05 2.1667 3 1 2 41.69 4.28 2.1662 4 2 1 42.03 18.37 2.1492 1 5 0 43.63 1.52 2.0741 2 3 2 44.16 3.90 2.0504 3 2 2 44.60 8.98 2.0310 5 1 0 45.04 2.11 2.0123 3 4 1 46.50 1.67 1.9523 1 4 2 46.68 13.77 1.9453 5 0 1 46.96 1.59 1.9343 5 2 0 47.24 8.57 1.9235 4 0 2 47.45 3.13 1.9155 5 1 1 47.65 8.82 1.9080 2 5 1 48.17 12.69 1.8886 1 0 3 49.08 6.18 1.8555 2 4 2 49.17 2.53 1.8524 3 5 0 49.71 1.13 1.8337 5 2 1 49.78 4.75 1.8310 0 6 0 50.24 1.83 1.8154 4 2 2 50.71 5.88 1.7998 5 3 0 51.41 1.92 1.7769 2 1 3 53.04 1.68 1.7259 2 6 0 53.15 11.55 1.7228 1 5 2 53.22 5.79 1.7207 1 6 1 53.31 1.21 1.7180 5 3 1 53.54 2.98 1.7110 2 2 3 53.87 1.93 1.7014 6 1 0 54.69 1.39 1.6777 3 0 3 55.32 4.42 1.6601 5 1 2 55.57 2.15 1.6533 2 6 1 55.93 8.61 1.6433 6 2 0 56.36 2.08 1.6318 6 1 1 56.93 2.60 1.6168 3 6 0 56.97 2.73 1.6158 2 3 3 57.30 1.93 1.6073 4 5 1 57.41 5.64 1.6045 3 2 3 58.57 10.35 1.5755 4 4 2 58.62 1.01 1.5742 0 4 3 59.27 2.24 1.5585 6 3 0 59.28 2.78 1.5582 3 5 2 59.34 1.16 1.5567 3 6 1 59.36 2.90 1.5562 1 4 3 59.82 14.61 1.5454 0 6 2 60.64 1.45 1.5265 5 3 2 62.11 2.10 1.4938 4 6 0 62.73 11.49 1.4806 2 6 2 62.84 21.59 1.4783 6 0 2 63.57 1.21 1.4630 7 1 0 64.05 1.64 1.4532 2 7 1 64.40 5.67 1.4460 4 6 1 64.67 18.27 1.4408 0 0 4 65.34 1.23 1.4275 6 2 2 66.26 3.16 1.4100 3 6 2 66.41 2.28 1.4070 5 0 3 67.14 1.11 1.3936 0 2 4 67.45 3.35 1.3878 2 0 4 68.27 2.53 1.3733 0 8 0 68.41 2.73 1.3708 6 3 2 68.85 1.11 1.3630 5 2 3 70.61 1.82 1.3333 5 6 1 70.69 2.24 1.3320 7 3 1 70.98 2.54 1.3272 2 8 0 71.04 7.95 1.3262 4 6 2 71.13 1.01 1.3248 1 8 1 71.46 1.27 1.3194 6 5 1 72.29 1.79 1.3064 4 7 1 72.59 13.92 1.3017 6 4 2 74.05 1.63 1.2796 3 7 2 74.30 6.13 1.2759 0 4 4 74.45 1.63 1.2737 6 1 3 75.27 2.24 1.2619 4 5 3 75.52 2.47 1.2583 4 0 4 75.59 2.54 1.2573 8 2 0 75.79 5.94 1.2545 6 6 0 76.44 2.56 1.2455 3 8 1 77.01 1.05 1.2376 5 6 2 77.08 3.50 1.2366 7 3 2 77.84 2.39 1.2265 4 2 4 80.16 3.54 1.1967 1 5 4 80.56 1.42 1.1918 8 3 1 81.27 1.74 1.1831 2 7 3 81.59 2.31 1.1792 4 6 3 81.94 1.26 1.1751 5 1 4 84.11 2.19 1.1502 6 6 2 87.16 1.90 1.1177 4 8 2 87.19 2.29 1.1174 1 9 2 87.36 1.88 1.1157 5 6 3 87.43 1.25 1.1149 7 3 3 87.43 1.25 1.1149 7 3 3 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.