Petalite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern of R040100 Tagai T, Ried H, Joswig W, Korekawa M Zeitschrift fur Kristallographie 160 (1982) 159-170 Kristallographische untersuchungen eines petalits mittels neutronenbeugung und transmissionselektronenmikroskopie Locality: Varutrask, Sweden CELL PARAMETERS: 11.7500 5.1395 7.6250 90.000 113.000 90.000 SPACE GROUP: P2/a ATOM X Y Z OCCUPANCY ISO(B) Li 0.25000 0.25530 0.00000 1.000 1.558 Al 0.25000 0.75640 0.00000 1.000 0.752 Si 0.99800 0.51280 0.28960 1.000 0.646 Si 0.14770 0.00990 0.28960 1.000 0.648 O 0.00000 0.50000 0.50000 1.000 1.874 O 0.25000 0.96540 0.50000 1.000 1.702 O 0.09380 0.30120 0.27040 1.000 1.358 O 0.36170 0.53580 0.13420 1.000 1.132 O 0.03810 0.80110 0.25180 1.000 1.283 O 0.20760 0.97790 0.13530 1.000 1.575 X-RAY WAVELENGTH: 1.541838 BOUNDS ON TWO THETA: 5.0 90.0 LIMITS IMPOSED ON THE INDICES ARE: +/- 9 +/- 4 +/- 6 MAX. ABS. INTENSITY / VOLUME**2: 9.134268797 The INTENSITY cut off value is 1.00 2-THETA INTENSITY D-SPACING H K L 12.61 1.63 7.0188 0 0 1 16.32 3.34 5.4310 -2 0 1 16.39 2.67 5.4080 2 0 0 19.12 5.68 4.6421 1 1 0 21.10 4.78 4.2103 -1 1 1 23.84 96.00 3.7330 -2 1 1 23.89 100.00 3.7255 2 1 0 24.25 74.66 3.6708 -2 0 2 24.39 70.44 3.6496 2 0 1 24.70 5.99 3.6038 1 1 1 25.38 32.80 3.5094 0 0 2 28.82 10.86 3.0978 -3 1 1 29.21 4.40 3.0569 -1 1 2 29.91 9.22 2.9871 -2 1 2 30.03 8.73 2.9756 2 1 1 30.28 4.27 2.9515 3 1 0 32.99 3.60 2.7155 -4 0 2 33.13 3.53 2.7040 4 0 0 34.53 3.02 2.5977 1 1 2 34.91 15.31 2.5698 0 2 0 35.35 3.95 2.5390 -2 0 3 35.52 3.09 2.5273 2 0 2 36.61 1.12 2.4546 3 1 1 37.07 2.26 2.4255 -1 2 1 37.26 3.78 2.4131 0 2 1 37.46 4.68 2.4010 -4 1 2 37.59 3.66 2.3930 4 1 0 38.48 1.22 2.3396 0 0 3 42.44 1.31 2.1301 -5 1 1 43.66 4.16 2.0733 0 2 2 43.77 11.24 2.0682 -4 1 3 44.00 11.79 2.0580 4 1 1 45.49 1.81 1.9938 5 1 0 46.98 19.09 1.9341 -4 2 1 47.84 5.29 1.9013 -2 0 4 48.03 4.84 1.8944 2 0 3 48.14 2.75 1.8904 -5 1 3 49.67 1.41 1.8354 -4 0 4 49.98 1.25 1.8248 4 0 2 50.41 1.10 1.8103 -6 0 3 50.53 2.44 1.8061 -2 2 3 50.64 1.20 1.8027 6 0 0 50.66 2.45 1.8019 2 2 2 51.37 1.07 1.7788 -3 1 4 52.00 2.17 1.7586 5 1 1 52.12 4.27 1.7547 0 0 4 52.98 5.89 1.7285 -4 1 4 53.27 5.03 1.7196 4 1 2 53.90 1.03 1.7011 6 1 0 55.53 1.05 1.6549 5 2 0 56.31 6.63 1.6338 -2 3 1 56.33 6.63 1.6332 2 3 0 57.57 1.41 1.6010 3 1 3 57.86 1.31 1.5935 -7 1 2 59.55 1.27 1.5524 -2 3 2 59.62 1.22 1.5508 2 3 1 60.58 3.02 1.5284 -2 2 4 60.74 3.20 1.5249 2 2 3 62.79 8.66 1.4800 -6 2 3 62.99 8.15 1.4758 6 2 0 64.28 2.99 1.4491 -4 1 5 64.29 2.58 1.4489 -4 3 2 64.31 2.13 1.4485 -2 1 5 64.38 3.31 1.4472 4 3 0 64.51 1.88 1.4446 2 1 4 64.63 2.96 1.4421 4 1 3 66.54 3.28 1.4053 -6 0 5 66.62 2.51 1.4038 0 0 5 66.99 3.78 1.3969 6 0 2 68.77 1.91 1.3651 -4 3 3 68.94 2.02 1.3621 4 3 1 69.19 1.70 1.3577 -8 0 4 69.53 2.07 1.3520 8 0 0 72.61 1.52 1.3021 -4 2 5 72.93 1.21 1.2970 4 2 3 73.74 3.97 1.2849 0 4 0 74.40 3.91 1.2751 -8 2 2 75.99 2.50 1.2524 -4 3 4 76.23 2.40 1.2490 4 3 2 76.26 1.36 1.2486 -2 0 6 76.48 1.23 1.2455 2 0 5 77.40 3.11 1.2330 -6 2 5 77.48 4.51 1.2319 0 2 5 77.83 2.59 1.2273 6 2 2 78.90 1.75 1.2133 -2 1 6 78.94 1.50 1.2127 -2 4 2 79.00 1.90 1.2120 2 4 1 79.12 1.76 1.2105 2 1 5 79.91 1.10 1.2005 -8 2 4 85.76 1.21 1.1329 -4 3 5 85.78 1.01 1.1327 -2 3 5 85.96 1.19 1.1308 2 3 4 86.07 1.43 1.1296 4 3 3 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.