Gypsum Boeyens J C A, Ichharam V V H Zeitschrift fur Kristallographie 217 (2002) 9-10 Redetermination of the crystal structure of calcium sulphate dihydrate, CaSO4*2H2O Locality: synthetic _database_code_amcsd 0011093 CELL PARAMETERS: 6.2840 15.2000 6.5230 90.000 127.410 90.000 SPACE GROUP: C2/c X-RAY WAVELENGTH: 1.541838 Cell Volume: 494.899 Density (g/cm3): 2.310 MAX. ABS. INTENSITY / VOLUME**2: 12.00207308 RIR: 1.691 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 11.64 77.51 7.6000 0 2 0 2 18.71 1.41 4.7423 1 1 0 4 20.75 100.00 4.2811 0 2 1 4 23.41 10.56 3.8000 0 4 0 2 23.43 2.59 3.7970 -1 3 1 4 28.15 4.09 3.1702 -1 1 2 4 29.14 71.18 3.0642 0 4 1 4 31.13 47.99 2.8730 -2 2 1 4 31.19 3.09 2.8674 -2 0 2 2 32.11 9.31 2.7875 1 1 1 4 32.80 1.09 2.7305 -1 3 2 4 33.40 35.89 2.6828 -2 2 2 4 34.55 3.75 2.5964 1 5 0 4 34.62 2.12 2.5906 0 0 2 2 35.99 11.05 2.4957 2 0 0 2 36.31 1.15 2.4744 1 3 1 4 36.65 6.87 2.4521 0 2 2 4 37.41 3.76 2.4036 -2 4 1 4 40.69 13.18 2.2174 -1 5 2 4 42.22 1.79 2.1405 0 4 2 4 43.38 15.19 2.0860 2 4 0 4 43.52 4.40 2.0796 -2 2 3 4 43.65 6.20 2.0736 1 5 1 4 43.66 5.57 2.0731 -3 1 2 4 44.26 4.65 2.0465 -1 1 3 4 45.56 3.03 1.9912 1 7 0 4 46.47 2.91 1.9541 -3 1 1 4 47.88 1.15 1.9000 0 8 0 2 47.92 13.69 1.8985 -2 6 2 4 48.44 12.46 1.8792 -2 4 3 4 48.83 2.77 1.8652 1 1 2 4 50.38 12.68 1.8113 0 6 2 4 50.76 5.59 1.7987 2 2 1 4 51.07 1.18 1.7885 -3 3 3 4 51.21 2.03 1.7838 0 8 1 4 51.39 9.81 1.7779 2 6 0 4 53.65 1.03 1.7083 -1 5 3 4 54.48 2.17 1.6842 0 2 3 4 55.19 6.19 1.6643 2 4 1 4 55.91 3.30 1.6446 -2 6 3 4 56.81 5.42 1.6207 -2 0 4 2 56.82 2.97 1.6204 -2 8 1 4 56.83 1.92 1.6201 -1 9 1 4 58.20 1.42 1.5851 -2 2 4 4 58.25 1.69 1.5838 -2 8 2 4 58.38 1.03 1.5808 3 3 0 4 60.42 2.24 1.5321 0 8 2 4 60.92 1.32 1.5207 -3 3 4 4 61.32 1.19 1.5118 2 8 0 4 64.79 3.88 1.4390 -4 4 3 4 65.06 1.95 1.4337 -4 0 4 2 65.88 2.72 1.4178 2 0 2 2 66.72 2.12 1.4019 -4 2 1 4 68.76 1.07 1.3652 -2 6 4 4 68.77 4.60 1.3651 -2 10 1 4 70.16 1.02 1.3414 -4 4 4 4 70.52 1.64 1.3354 -4 4 1 4 71.10 1.68 1.3260 2 8 1 4 71.27 2.55 1.3232 -4 6 2 4 74.20 2.18 1.2780 0 8 3 4 76.31 1.33 1.2479 4 0 0 2 76.32 1.57 1.2477 -4 6 4 4 76.63 1.50 1.2435 -2 10 3 4 77.40 1.37 1.2331 -2 8 4 4 77.52 1.76 1.2314 4 2 0 4 79.69 1.03 1.2033 -4 -8 3 4 79.80 1.09 1.2018 -4 -8 2 4 83.42 1.42 1.1587 -2 12 2 4 83.89 2.05 1.1533 0 6 4 4 85.01 4.03 1.1410 0 10 3 4 85.29 1.30 1.1379 0 12 2 4 87.05 1.09 1.1194 4 6 0 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.