Beudantite Diffraction data computed using the structute from the paper listed below, along with the cell parameters refined from single crystal data of R070189 Szymanski J T The Canadian Mineralogist 26 (1988) 923-932 The crystal structure of beudantite, Pb(Fe,Al)3((As,S)O4)2(OH)6 CELL PARAMETERS: 7.3190 7.3190 17.0440 90.000 90.000 120.000 SPACE GROUP: R-3m ATOM X Y Z OCCUPANCY ISO(B) Pb 0.03830 0.00000 0.00000 0.167 1.717 As 0.00000 0.00000 0.31490 0.535 0.724 S 0.00000 0.00000 0.31490 0.465 0.724 Fe 0.00000 0.50000 0.50000 0.847 0.661 Al 0.00000 0.50000 0.50000 0.153 0.661 O 0.00000 0.00000 0.40680 1.000 2.129 O 0.21450 0.42900 -0.05320 1.000 1.410 O 0.12540 0.25080 0.13430 1.000 0.957 X-RAY WAVELENGTH: 1.541838 BOUNDS ON TWO THETA: 0.0 90.0 LIMITS IMPOSED ON THE INDICES ARE: +/- 5 +/- 5 +/- 15 MAX. ABS. INTENSITY / VOLUME**2: 81.56036849 The INTENSITY cut off value is 1.00 2-THETA INTENSITY D-SPACING H K L 14.91 74.85 5.9409 1 0 1 15.60 7.63 5.6813 0 0 3 17.44 1.44 5.0859 0 1 2 24.32 40.10 3.6595 1 1 0 25.18 6.75 3.5362 1 0 4 28.65 2.72 3.1158 0 2 1 29.02 100.00 3.0765 1 1 3 29.76 3.11 3.0022 0 1 5 30.08 16.68 2.9705 2 0 2 31.49 17.15 2.8407 0 0 6 35.29 16.50 2.5430 0 2 4 37.93 8.03 2.3724 2 1 1 39.06 7.19 2.3063 1 2 2 39.65 23.55 2.2729 1 0 7 40.19 10.78 2.2440 1 1 6 42.80 3.34 2.1128 3 0 0 43.33 4.37 2.0883 2 1 4 45.82 19.83 1.9803 0 3 3 45.82 5.61 1.9803 3 0 3 46.32 3.28 1.9601 1 2 5 49.84 19.00 1.8297 2 2 0 51.70 3.48 1.7681 2 0 8 52.32 2.01 1.7487 1 3 1 53.67 5.85 1.7077 2 1 7 54.10 1.77 1.6953 0 3 6 54.10 1.82 1.6953 3 0 6 54.56 9.15 1.6819 1 1 9 55.86 2.10 1.6459 1 0 10 59.13 2.52 1.5624 3 1 5 59.32 2.91 1.5579 0 4 2 60.15 11.68 1.5383 2 2 6 61.80 10.01 1.5011 0 2 10 62.54 3.01 1.4852 4 0 4 64.29 1.48 1.4489 3 2 1 65.49 3.41 1.4253 1 3 7 66.28 3.57 1.4102 0 3 9 66.28 1.38 1.4102 3 0 9 67.44 1.17 1.3888 2 1 10 67.75 2.27 1.3832 4 1 0 70.01 3.24 1.3439 1 4 3 70.01 4.67 1.3439 4 1 3 71.21 1.39 1.3241 1 1 12 73.80 1.94 1.2839 1 0 13 76.27 3.70 1.2484 3 2 7 78.10 1.64 1.2237 1 3 10 83.25 1.87 1.1605 4 0 10 84.18 2.91 1.1501 2 1 13 86.80 2.35 1.1220 2 2 12 87.29 1.40 1.1170 4 1 9 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.