Trolleite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R050425 Moore P B, Araki T American Mineralogist 59 (1974) 974-984 Trolleite, Al4(OH)3[PO4]3: A very dense structure with octahedral face-sharing dimers CELL PARAMETERS: 18.85468 7.164189 7.156837 90.00000 99.97207 90.00000 SPACE GROUP: I2/c X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 13.28 21.69 6.6840 1 1 0 17.68 14.91 5.0245 0 1 1 19.04 1.23 4.6667 -2 1 1 19.14 12.00 4.6425 4 0 0 21.14 4.88 4.2070 2 1 1 24.47 12.00 3.6412 -4 1 1 25.45 6.02 3.5023 -2 0 2 26.69 12.17 3.3420 2 2 0 27.06 5.92 3.2972 5 1 0 27.74 100.00 3.2176 4 1 1 27.89 94.48 3.2009 -1 1 2 28.75 69.84 3.1067 1 2 1 28.86 35.43 3.0950 6 0 0 29.05 35.91 3.0753 -4 0 2 29.67 5.84 3.0122 -3 1 2 32.05 1.61 2.7936 -6 1 1 33.78 1.24 2.6540 3 1 2 35.13 2.86 2.5553 -6 0 2 35.62 35.12 2.5211 -5 2 1 35.75 7.29 2.5123 0 2 2 35.92 3.85 2.5009 6 1 1 38.00 2.37 2.3686 1 3 0 38.45 1.56 2.3419 6 2 0 38.59 2.44 2.3333 -4 2 2 38.80 1.37 2.3212 8 0 0 39.96 1.38 2.2568 -2 1 3 40.49 2.55 2.2280 3 3 0 40.53 3.31 2.2262 -2 3 1 40.76 1.64 2.2138 -8 1 1 40.87 3.90 2.2084 -7 1 2 43.00 4.73 2.1035 4 2 2 45.58 9.25 1.9902 4 3 1 45.76 7.79 1.9827 9 1 0 45.68 6.04 1.9863 -1 3 2 46.05 7.18 1.9711 -6 1 3 46.17 12.07 1.9662 7 2 1 46.42 15.08 1.9560 -3 2 3 49.76 2.65 1.8324 3 3 2 50.70 5.63 1.8006 8 0 2 50.74 9.25 1.7990 3 2 3 51.05 4.10 1.7890 -2 0 4 50.99 4.63 1.7910 0 4 0 51.49 4.87 1.7745 -10 0 2 51.94 1.89 1.7603 -8 1 3 52.23 2.26 1.7512 -4 0 4 52.89 1.33 1.7308 -1 1 4 54.48 1.78 1.6839 6 1 3 54.66 1.71 1.6788 5 3 2 54.68 2.74 1.6784 1 1 4 54.77 2.08 1.6759 10 1 1 54.80 1.67 1.6748 0 3 3 54.94 1.36 1.6710 4 4 0 55.19 1.84 1.6641 -5 1 4 57.25 14.37 1.6088 8 2 2 57.58 11.37 1.6005 -2 2 4 59.16 9.23 1.5613 9 3 0 59.21 1.41 1.5603 4 0 4 59.40 7.76 1.5556 -6 3 3 59.50 21.61 1.5534 2 4 2 59.74 9.73 1.5475 12 0 0 59.63 4.22 1.5502 6 4 0 59.74 6.47 1.5477 -4 4 2 59.92 5.20 1.5433 -11 2 1 60.13 5.71 1.5384 -9 2 3 60.17 12.75 1.5376 -8 0 4 60.20 1.22 1.5368 10 0 2 60.93 1.70 1.5202 2 2 4 63.40 1.54 1.4666 -6 4 2 66.72 4.04 1.4015 11 1 2 66.68 3.88 1.4023 6 3 3 66.85 4.86 1.3991 1 3 4 66.97 3.35 1.3968 -12 2 2 67.02 1.29 1.3959 3 5 0 67.24 4.46 1.3919 -4 1 5 70.83 3.75 1.3299 9 2 3 71.22 2.98 1.3236 -1 2 5 71.72 1.10 1.3155 -3 5 2 72.17 1.32 1.3084 -10 2 4 74.27 1.37 1.2766 -5 5 2 74.73 2.58 1.2698 8 4 2 74.90 3.06 1.2674 13 2 1 75.01 2.82 1.2657 -2 4 4 75.24 1.06 1.2624 6 5 1 75.37 18.64 1.2606 -10 4 2 75.46 2.53 1.2593 -7 2 5 76.56 1.06 1.2439 14 2 0 81.22 1.39 1.1839 12 1 3 81.23 1.11 1.1838 7 3 4 81.43 1.02 1.1813 2 3 5 81.52 1.06 1.1803 10 0 4 81.65 2.24 1.1787 5 2 5 81.87 1.26 1.1761 14 0 2 81.80 2.03 1.1769 9 5 0 81.84 2.41 1.1765 4 4 4 81.98 1.02 1.1748 0 0 6 82.14 2.64 1.1730 -14 3 1 82.01 2.28 1.1744 -6 5 3 82.15 1.82 1.1728 1 6 1 82.48 1.95 1.1689 -11 3 4 82.61 1.31 1.1674 -6 0 6 83.02 1.05 1.1627 -16 1 1 83.19 1.10 1.1607 -14 0 4 85.83 1.51 1.1317 -5 6 1 86.62 1.57 1.1233 -15 2 3 86.85 4.49 1.1210 10 2 4 87.31 5.39 1.1163 0 2 6 88.51 1.41 1.1041 6 5 3 88.79 1.31 1.1014 16 1 1 88.67 1.52 1.1026 1 5 4 89.59 2.02 1.0937 -9 1 6 89.59 2.02 1.0937 -9 1 6 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.