Gypsum Comodi P, Nazzareni S, Zanazzi P F, Speziale S American Mineralogist 93 (2008) 1530-1537 High-pressure behavior of gypsum: A single-crystal X-ray study Locality: Valle di Caramanico, Abruzzo, Italy Note: P = 0.25 GPa _database_code_amcsd 0004652 CELL PARAMETERS: 6.2820 15.1750 5.6730 90.000 114.130 90.000 SPACE GROUP: C2/c X-RAY WAVELENGTH: 1.541838 Cell Volume: 493.548 Density (g/cm3): 2.375 MAX. ABS. INTENSITY / VOLUME**2: 12.11638482 RIR: 1.661 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 11.66 69.22 7.5875 0 2 0 2 20.77 100.00 4.2766 0 2 1 4 23.45 11.53 3.7938 0 4 0 2 23.45 2.83 3.7930 1 3 0 4 28.17 5.79 3.1683 1 1 1 4 29.18 74.84 3.0601 0 4 1 4 31.15 53.55 2.8714 -2 2 1 4 31.20 2.07 2.8665 2 0 0 2 32.14 13.91 2.7853 -1 1 2 4 33.42 39.62 2.6816 2 2 0 4 34.59 5.95 2.5928 -1 5 1 4 34.65 1.26 2.5886 0 0 2 2 36.01 11.94 2.4942 -2 0 2 2 36.34 1.69 2.4720 -1 3 2 4 36.68 8.27 2.4500 0 2 2 4 37.45 1.98 2.4015 -2 4 1 4 40.74 17.80 2.2149 1 5 1 4 42.27 1.66 2.1383 0 4 2 4 43.42 17.11 2.0841 -2 4 2 4 43.54 4.44 2.0785 2 2 1 4 43.68 5.30 2.0724 -3 1 1 4 43.71 7.89 2.0711 -1 5 2 4 44.29 6.55 2.0451 1 1 2 4 45.63 3.74 1.9882 -1 7 1 4 46.49 4.71 1.9532 -3 1 2 4 47.96 2.04 1.8969 0 8 0 2 47.97 17.08 1.8965 2 6 0 4 48.48 12.76 1.8779 2 4 1 4 48.87 3.14 1.8637 -1 1 3 4 50.45 15.18 1.8091 0 6 2 4 50.80 4.16 1.7973 -2 2 3 4 51.09 1.44 1.7877 3 3 0 4 51.30 2.10 1.7811 0 8 1 4 51.46 9.31 1.7759 -2 6 2 4 53.71 1.50 1.7067 1 5 2 4 54.53 3.44 1.6828 0 2 3 4 55.24 8.35 1.6628 -2 4 3 4 55.97 3.20 1.6430 2 6 1 4 56.84 6.96 1.6198 2 0 2 2 56.90 3.48 1.6183 -2 8 1 4 56.92 2.22 1.6176 1 9 0 4 58.42 1.67 1.5796 -3 3 3 4 60.51 1.57 1.5301 0 8 2 4 60.95 2.22 1.5200 3 3 1 4 61.41 1.20 1.5098 -2 8 2 4 62.17 1.33 1.4932 -2 6 3 4 63.85 1.48 1.4578 -3 7 2 4 64.82 5.26 1.4383 -4 4 1 4 65.08 2.34 1.4333 4 0 0 2 65.47 1.00 1.4256 2 8 1 4 65.94 3.48 1.4167 -2 0 4 2 66.76 2.78 1.4011 -4 2 3 4 67.66 1.19 1.3848 -1 1 4 4 68.88 5.45 1.3631 -2 10 1 4 70.20 1.18 1.3408 4 4 0 4 70.57 1.26 1.3345 -4 4 3 4 70.87 1.44 1.3296 -1 11 1 4 71.19 1.96 1.3244 -2 8 3 4 71.33 2.67 1.3222 -4 6 2 4 74.30 2.47 1.2765 0 8 3 4 76.16 1.14 1.2499 2 2 3 4 76.36 1.08 1.2471 -4 0 4 2 76.38 1.44 1.2470 4 6 0 4 76.74 1.53 1.2419 2 10 1 4 76.97 3.33 1.2388 4 2 1 4 77.49 1.78 1.2318 2 8 2 4 77.58 2.29 1.2306 -4 2 4 4 79.77 2.37 1.2023 -4 8 1 4 79.79 2.31 1.2019 2 4 3 4 79.89 2.39 1.2008 -4 8 2 4 81.87 1.15 1.1767 -5 3 3 4 83.57 1.60 1.1570 2 12 0 4 83.99 2.55 1.1522 0 6 4 4 84.78 1.07 1.1435 4 8 0 4 85.14 4.89 1.1396 0 10 3 4 85.45 1.45 1.1363 0 12 2 4 85.56 1.26 1.1351 -2 8 4 4 87.14 1.46 1.1185 -4 6 4 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.