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 = 1.01 GPa _database_code_amcsd 0004655 CELL PARAMETERS: 6.2410 15.1300 5.6450 90.000 114.420 90.000 SPACE GROUP: C2/c X-RAY WAVELENGTH: 1.541838 Cell Volume: 485.351 Density (g/cm3): 2.415 MAX. ABS. INTENSITY / VOLUME**2: 12.35752108 RIR: 1.666 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 11.70 69.09 7.5650 0 2 0 2 20.89 100.00 4.2515 0 2 1 4 23.52 9.07 3.7825 0 4 0 2 23.59 3.02 3.7720 1 3 0 4 28.43 5.32 3.1389 1 1 1 4 29.32 75.66 3.0465 0 4 1 4 31.32 51.10 2.8563 -2 2 1 4 31.49 1.94 2.8413 2 0 0 2 32.29 13.48 2.7722 -1 1 2 4 33.70 40.66 2.6599 2 2 0 4 34.71 6.64 2.5844 -1 5 1 4 34.91 1.05 2.5700 0 0 2 2 36.16 12.38 2.4842 -2 0 2 2 36.51 2.09 2.4613 -1 3 2 4 36.94 8.33 2.4334 0 2 2 4 37.63 2.09 2.3905 -2 4 1 4 41.00 19.33 2.2015 1 5 1 4 42.53 1.74 2.1257 0 4 2 4 43.59 16.83 2.0764 -2 4 2 4 43.89 6.57 2.0630 -1 5 2 4 43.97 4.36 2.0593 2 2 1 4 43.99 5.25 2.0585 -3 1 1 4 44.70 6.54 2.0271 1 1 2 4 45.78 4.23 1.9820 -1 7 1 4 46.52 1.02 1.9523 -2 6 1 4 46.73 4.80 1.9440 -3 1 2 4 48.11 2.15 1.8913 0 8 0 2 48.25 15.56 1.8860 2 6 0 4 48.90 12.23 1.8627 2 4 1 4 49.15 3.06 1.8535 -1 1 3 4 50.72 14.53 1.7999 0 6 2 4 51.03 4.11 1.7899 -2 2 3 4 51.49 1.65 1.7749 0 8 1 4 51.54 1.54 1.7733 3 3 0 4 51.65 9.20 1.7697 -2 6 2 4 54.12 1.34 1.6947 1 5 2 4 54.95 3.13 1.6710 0 2 3 4 55.48 8.65 1.6562 -2 4 3 4 56.39 3.52 1.6317 2 6 1 4 57.13 3.86 1.6123 -2 8 1 4 57.14 2.37 1.6121 1 9 0 4 57.44 6.70 1.6044 2 0 2 2 58.67 1.37 1.5735 -3 3 3 4 60.81 1.68 1.5233 0 8 2 4 61.57 2.24 1.5062 3 3 1 4 61.64 1.35 1.5048 -2 8 2 4 62.43 1.42 1.4875 -2 6 3 4 64.14 1.28 1.4520 -3 7 2 4 65.32 5.06 1.4286 -4 4 1 4 65.73 2.32 1.4207 4 0 0 2 65.91 1.08 1.4172 0 6 3 4 66.29 3.40 1.4100 -2 0 4 2 67.10 2.80 1.3950 -4 2 3 4 68.12 1.24 1.3766 -1 1 4 4 69.16 5.07 1.3584 -2 10 1 4 70.85 1.05 1.3300 4 4 0 4 70.92 1.17 1.3288 -4 4 3 4 71.12 1.55 1.3256 -1 11 1 4 71.49 1.60 1.3196 -2 8 3 4 71.74 2.68 1.3157 -4 6 2 4 74.77 2.59 1.2698 0 8 3 4 76.73 1.12 1.2421 -4 0 4 2 76.99 1.11 1.2386 2 2 3 4 77.05 1.41 1.2378 4 6 0 4 77.22 1.52 1.2354 2 10 1 4 77.84 3.12 1.2272 4 2 1 4 77.95 2.39 1.2257 -4 2 4 4 78.12 1.81 1.2234 2 8 2 4 80.31 1.98 1.1955 -4 8 1 4 80.33 2.39 1.1952 -4 8 2 4 80.63 2.24 1.1916 2 4 3 4 82.36 1.17 1.1708 -5 3 3 4 83.97 1.79 1.1525 2 12 0 4 84.65 2.34 1.1449 0 6 4 4 85.48 1.14 1.1359 4 8 0 4 85.65 4.72 1.1341 0 10 3 4 85.85 1.52 1.1319 0 12 2 4 86.00 1.28 1.1304 -2 8 4 4 87.56 1.30 1.1143 -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.