Lanarkite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from single crystal data of R080116 Sahl K Zeitschrift fur Kristallographie 132 (1970) 99-117 Zur kristallstruktur von lanarkit, Pb2O(SO4) Locality: synthetic CELL PARAMETERS: 13.6850 5.6720 7.0240 90.000 115.790 90.000 SPACE GROUP: C2/m ATOM X Y Z OCCUPANCY ISO(B) Pb 0.14660 0.00000 0.10500 1.000 1.300 Pb 0.02580 0.50000 0.27150 1.000 1.220 S 0.32900 0.50000 0.34400 1.000 1.200 O 0.11100 0.00000 0.42900 1.000 2.100 O 0.35500 0.71100 0.25100 1.000 2.000 O 0.21300 0.50000 0.28400 1.000 2.000 O 0.00000 0.24600 0.00000 1.000 1.700 X-RAY WAVELENGTHS: 1.540562 1.544390 BOUNDS ON TWO THETA: 5.0 90.0 LIMITS IMPOSED ON THE INDICES ARE: +/- 11 +/- 5 +/- 5 MAX. ABS. INTENSITY / VOLUME**2: 188.7656134 The INTENSITY cut off value is 1.00 2-THETA INTENSITY D-SPACING H K L 13.99 / 14.03 16.63 / 8.32 6.3244 0 0 1 14.36 / 14.40 16.80 / 8.40 6.1610 2 0 0 15.08 / 15.12 11.65 / 5.83 5.8707 -2 0 1 17.20 / 17.24 3.35 / 1.68 5.1523 1 1 0 20.14 / 20.19 18.42 / 9.21 4.4063 -1 1 1 24.14 / 24.20 12.59 / 6.30 3.6841 2 0 1 24.16 / 24.22 5.22 / 2.61 3.6801 1 1 1 25.46 / 25.53 11.31 / 5.65 3.4951 -3 1 1 26.78 / 26.84 100.00 / 50.00 3.3267 3 1 0 28.20 / 28.27 8.58 / 4.29 3.1622 0 0 2 30.33 / 30.41 75.15 / 37.57 2.9444 -1 1 2 30.43 / 30.50 23.24 / 11.62 2.9354 -4 0 2 31.39 / 31.47 17.58 / 8.79 2.8470 -3 1 2 31.52 / 31.60 35.64 / 17.82 2.8360 0 2 0 34.58 / 34.67 1.48 / 0.74 2.5919 3 1 1 34.63 / 34.72 1.95 / 0.98 2.5877 0 2 1 34.80 / 34.88 2.96 / 1.48 2.5762 2 2 0 35.11 / 35.20 4.75 / 2.37 2.5536 -2 2 1 36.46 / 36.55 15.24 / 7.62 2.4625 -5 1 1 37.15 / 37.25 14.03 / 7.01 2.4181 2 0 2 37.60 / 37.70 5.36 / 2.68 2.3901 4 0 1 38.63 / 38.73 6.39 / 3.20 2.3290 -2 0 3 39.78 / 39.89 4.67 / 2.33 2.2639 -6 0 1 39.85 / 39.95 5.92 / 2.96 2.2603 5 1 0 40.09 / 40.19 14.98 / 7.49 2.2473 2 2 1 40.63 / 40.73 6.66 / 3.33 2.2188 -6 0 2 41.35 / 41.45 1.70 / 0.85 2.1819 -4 2 1 41.84 / 41.95 3.60 / 1.80 2.1573 -3 1 3 42.80 / 42.91 3.70 / 1.85 2.1113 0 2 2 43.28 / 43.39 1.04 / 0.52 2.0888 -1 1 3 44.06 / 44.17 7.50 / 3.75 2.0537 6 0 0 44.38 / 44.49 24.15 / 12.08 2.0396 -4 2 2 46.36 / 46.48 5.54 / 2.77 1.9569 -6 0 3 47.79 / 47.92 7.59 / 3.79 1.9015 5 1 1 49.49 / 49.63 15.10 / 7.55 1.8401 2 2 2 49.57 / 49.70 10.15 / 5.07 1.8375 1 1 3 49.69 / 49.82 5.41 / 2.70 1.8334 -7 1 2 49.85 / 49.99 4.75 / 2.38 1.8276 4 2 1 49.92 / 50.06 2.43 / 1.21 1.8252 -1 3 1 50.68 / 50.81 2.44 / 1.22 1.7998 -2 2 3 51.62 / 51.75 1.91 / 0.96 1.7693 -6 2 1 52.25 / 52.39 4.38 / 2.19 1.7494 -4 0 4 52.31 / 52.45 5.66 / 2.83 1.7475 -6 2 2 52.57 / 52.71 1.43 / 0.71 1.7394 -3 3 1 53.13 / 53.27 4.31 / 2.16 1.7225 -2 0 4 53.30 / 53.44 11.78 / 5.89 1.7174 3 3 0 54.54 / 54.69 1.57 / 0.78 1.6812 7 1 0 54.82 / 54.97 4.08 / 2.04 1.6732 -8 0 1 55.17 / 55.32 4.69 / 2.34 1.6633 6 2 0 55.39 / 55.54 12.84 / 6.42 1.6575 -1 3 2 56.05 / 56.20 2.58 / 1.29 1.6395 -3 3 2 56.08 / 56.23 5.21 / 2.60 1.6386 -5 1 4 57.14 / 57.30 5.19 / 2.60 1.6107 -6 2 3 57.75 / 57.91 4.31 / 2.16 1.5951 -1 1 4 58.90 / 59.06 5.19 / 2.59 1.5667 5 1 2 59.39 / 59.55 4.08 / 2.04 1.5550 -5 3 1 59.57 / 59.73 1.82 / 0.91 1.5507 3 1 3 61.55 / 61.72 5.44 / 2.72 1.5055 -7 1 4 61.79 / 61.96 1.32 / 0.66 1.5001 5 3 0 62.31 / 62.48 5.30 / 2.65 1.4889 -4 2 4 62.76 / 62.93 5.77 / 2.88 1.4793 7 1 1 63.10 / 63.27 4.51 / 2.26 1.4722 -2 2 4 63.26 / 63.44 2.89 / 1.44 1.4687 -9 1 2 63.33 / 63.50 2.65 / 1.32 1.4674 4 0 3 64.62 / 64.80 5.12 / 2.56 1.4411 -8 2 1 64.68 / 64.86 4.21 / 2.11 1.4398 1 1 4 65.12 / 65.30 4.89 / 2.45 1.4313 -9 1 3 65.81 / 65.99 4.58 / 2.29 1.4180 0 4 0 67.87 / 68.06 2.64 / 1.32 1.3798 5 3 1 69.30 / 69.50 2.88 / 1.44 1.3548 1 3 3 69.40 / 69.59 2.05 / 1.02 1.3531 -7 3 2 69.52 / 69.72 1.52 / 0.76 1.3510 -3 1 5 71.19 / 71.40 1.33 / 0.66 1.3234 2 4 1 72.41 / 72.62 2.29 / 1.15 1.3041 -7 1 5 72.46 / 72.67 2.59 / 1.30 1.3033 4 2 3 74.11 / 74.33 1.26 / 0.63 1.2783 -10 0 4 74.21 / 74.43 3.12 / 1.56 1.2768 -4 4 2 74.75 / 74.97 1.93 / 0.96 1.2689 -5 3 4 75.03 / 75.25 1.34 / 0.67 1.2649 0 0 5 76.20 / 76.42 1.79 / 0.90 1.2483 -1 3 4 77.21 / 77.43 2.01 / 1.01 1.2346 5 3 2 77.49 / 77.72 1.18 / 0.59 1.2307 8 2 1 77.70 / 77.92 1.30 / 0.65 1.2280 6 0 3 78.06 / 78.29 2.85 / 1.42 1.2232 2 4 2 78.34 / 78.57 1.02 / 0.51 1.2195 4 4 1 78.99 / 79.22 1.01 / 0.50 1.2112 -2 4 3 79.55 / 79.79 2.62 / 1.31 1.2040 -7 3 4 80.28 / 80.52 1.35 / 0.67 1.1948 -6 4 2 80.64 / 80.88 2.46 / 1.23 1.1904 7 3 1 81.10 / 81.34 1.17 / 0.58 1.1849 -9 3 2 82.00 / 82.24 1.10 / 0.55 1.1741 -10 0 5 82.33 / 82.58 3.10 / 1.55 1.1702 -11 1 1 82.38 / 82.63 2.07 / 1.04 1.1696 1 3 4 82.62 / 82.87 1.71 / 0.85 1.1669 6 4 0 82.75 / 83.00 1.95 / 0.97 1.1654 -10 2 4 82.78 / 83.03 2.03 / 1.01 1.1650 -9 3 3 83.64 / 83.90 2.15 / 1.07 1.1552 0 2 5 84.26 / 84.52 1.39 / 0.69 1.1482 -6 4 3 86.24 / 86.51 1.42 / 0.71 1.1269 6 2 3 86.78 / 87.04 1.33 / 0.67 1.1213 10 0 1 87.67 / 87.94 1.29 / 0.65 1.1122 4 2 4 88.00 / 88.28 1.29 / 0.64 1.1088 7 1 3 88.73 / 89.01 1.68 / 0.84 1.1016 -4 4 4 89.43 / 89.72 1.65 / 0.83 1.0948 -2 4 4 89.57 / 89.85 2.53 / 1.27 1.0935 3 5 0 89.59 / 89.88 1.18 / 0.59 1.0932 -7 3 5 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.