Stokesite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from single crystal data of R060587 Vorma A Mineralogical Magazine 33 (1963) 615-617 Crystal structure of stokesite, CaSnSi3O9*2H2O CELL PARAMETERS: 14.4600 11.6120 5.2285 90.000 90.000 90.000 SPACE GROUP: Pnna ATOM X Y Z OCCUPANCY ISO(B) Ca 0.40000 0.25000 0.75000 1.000 1.300 Sn 0.00000 0.00000 0.50000 1.000 1.000 Si 0.06480 0.25000 0.75000 1.000 0.500 Si 0.14150 0.03170 0.00000 1.000 0.500 O 0.11750 0.00900 0.29500 1.000 1.000 O 0.13150 0.16680 0.91900 1.000 1.000 O 0.42350 0.04800 0.81300 1.000 1.000 O 0.00100 0.17200 0.57050 1.000 1.000 Wa 0.28700 0.17700 0.47800 1.000 1.000 O 0.25000 0.00000 0.95200 1.000 1.000 X-RAY WAVELENGTH: 1.541838 BOUNDS ON TWO THETA: 5.0 90.0 LIMITS IMPOSED ON THE INDICES ARE: +/- 13 +/- 10 +/- 4 MAX. ABS. INTENSITY / VOLUME**2: 22.75534544 The INTENSITY cut off value is 1.00 2-THETA INTENSITY D-SPACING H K L 12.24 100.00 7.2300 2 0 0 15.26 44.10 5.8060 0 2 0 18.04 7.74 4.9169 1 0 1 18.61 13.04 4.7675 0 1 1 19.61 23.24 4.5270 2 2 0 22.34 99.14 3.9801 2 1 1 23.71 8.93 3.7522 1 2 1 25.13 13.68 3.5439 3 0 1 26.04 11.76 3.4224 2 2 1 26.11 2.59 3.4124 2 3 0 26.29 1.51 3.3895 3 1 1 29.10 4.47 3.0688 4 2 0 29.37 1.12 3.0414 1 3 1 29.53 16.58 3.0249 3 2 1 30.80 34.92 2.9030 0 4 0 31.05 78.93 2.8805 4 1 1 31.30 46.38 2.8576 2 3 1 33.26 16.34 2.6940 2 4 0 33.87 4.25 2.6466 4 2 1 33.93 1.99 2.6420 4 3 0 34.30 9.29 2.6142 0 0 2 35.47 2.04 2.5307 5 0 1 35.75 3.25 2.5116 1 1 2 36.33 3.01 2.4726 5 1 1 37.31 1.66 2.4100 6 0 0 37.39 1.21 2.4052 2 1 2 37.74 16.34 2.3838 0 2 2 38.17 3.91 2.3580 4 3 1 39.82 16.89 2.2639 2 2 2 40.15 1.79 2.2457 3 4 1 40.53 9.49 2.2259 6 2 0 42.01 11.96 2.1508 6 1 1 42.30 1.06 2.1367 3 2 2 42.60 5.86 2.1224 0 5 1 42.68 13.08 2.1184 4 0 2 43.08 2.76 2.0999 1 5 1 44.27 1.94 2.0459 6 3 0 44.49 12.50 2.0365 2 5 1 45.58 2.56 1.9900 4 2 2 46.48 1.18 1.9539 4 5 0 46.95 6.69 1.9353 0 6 0 47.67 2.01 1.9076 5 4 1 47.74 5.51 1.9052 6 3 1 48.52 2.20 1.8761 2 4 2 49.82 15.73 1.8303 4 5 1 50.01 1.19 1.8239 7 2 1 50.49 5.18 1.8075 8 0 0 50.69 1.02 1.8009 1 6 1 51.14 2.06 1.7860 8 1 0 51.58 12.78 1.7719 6 0 2 51.94 1.07 1.7604 2 6 1 52.22 4.08 1.7517 6 1 2 52.35 1.21 1.7476 6 4 1 53.06 6.21 1.7258 8 2 0 53.14 1.20 1.7235 0 1 3 53.55 1.12 1.7114 1 1 3 53.55 8.58 1.7112 4 4 2 53.72 4.23 1.7062 4 6 0 53.98 2.68 1.6986 3 6 1 54.11 3.86 1.6948 6 2 2 54.28 2.27 1.6901 8 1 1 54.34 2.02 1.6882 2 5 2 54.75 7.29 1.6765 2 1 3 55.41 1.02 1.6582 1 2 3 57.89 4.38 1.5928 6 5 1 58.36 1.68 1.5812 0 7 1 59.11 2.53 1.5629 8 3 1 59.41 10.04 1.5558 4 1 3 59.42 10.23 1.5555 0 6 2 59.56 8.08 1.5521 2 3 3 59.88 5.60 1.5447 2 7 1 60.32 2.61 1.5344 8 4 0 60.92 3.69 1.5207 2 6 2 61.29 9.32 1.5125 6 4 2 61.45 4.86 1.5090 6 6 0 62.47 4.74 1.4867 8 0 2 63.15 1.09 1.4723 8 4 1 64.00 4.35 1.4548 4 3 3 64.16 1.00 1.4515 0 8 0 64.30 3.45 1.4487 4 7 1 64.72 3.58 1.4403 8 2 2 65.31 2.87 1.4288 4 6 2 65.39 1.15 1.4272 3 4 3 65.60 2.03 1.4231 2 8 0 66.72 1.08 1.4019 6 1 3 67.71 7.93 1.3838 10 1 1 68.14 1.32 1.3761 8 5 1 68.31 1.06 1.3731 2 8 1 68.56 2.18 1.3688 2 5 3 68.69 2.24 1.3664 6 7 0 71.05 1.19 1.3267 6 3 3 71.26 3.51 1.3233 8 4 2 71.34 2.18 1.3220 6 7 1 71.41 3.87 1.3210 8 6 0 72.02 2.12 1.3113 10 3 1 72.28 2.75 1.3071 0 0 4 72.70 4.42 1.3006 4 5 3 76.10 1.05 1.2507 3 6 3 76.16 1.18 1.2499 2 8 2 77.31 2.14 1.2343 2 9 1 79.42 1.24 1.2067 6 5 3 80.16 2.33 1.1974 4 8 2 80.35 3.92 1.1950 10 5 1 80.60 2.92 1.1919 0 4 4 81.14 1.41 1.1853 2 7 3 81.67 1.39 1.1790 8 6 2 81.92 2.06 1.1760 2 4 4 82.58 1.31 1.1683 12 1 1 85.08 1.77 1.1402 4 7 3 86.31 3.46 1.1271 6 2 4 86.72 1.78 1.1229 6 8 2 87.83 1.10 1.1115 6 9 1 88.20 2.65 1.1078 10 1 3 88.42 1.27 1.1056 4 10 0 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.