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 = 0.0001 GPa _database_code_amcsd 0004651 CELL PARAMETERS: 6.2770 15.1810 5.6720 90.000 114.110 90.000 SPACE GROUP: C2/c X-RAY WAVELENGTH: 1.541838 Cell Volume: 493.340 Density (g/cm3): 2.318 MAX. ABS. INTENSITY / VOLUME**2: 12.00416414 RIR: 1.686 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 11.66 78.06 7.5905 0 2 0 2 18.73 1.27 4.7368 -1 1 1 4 20.77 100.00 4.2771 0 2 1 4 23.44 10.73 3.7952 0 4 0 2 23.46 2.57 3.7928 1 3 0 4 28.17 4.19 3.1678 1 1 1 4 29.18 71.76 3.0609 0 4 1 4 31.17 48.18 2.8697 -2 2 1 4 31.22 3.08 2.8647 2 0 0 2 32.14 9.65 2.7847 -1 1 2 4 32.83 1.01 2.7281 1 3 1 4 33.43 35.98 2.6802 2 2 0 4 34.59 3.89 2.5932 -1 5 1 4 34.65 2.13 2.5886 0 0 2 2 36.03 11.17 2.4929 -2 0 2 2 36.35 1.14 2.4718 -1 3 2 4 36.68 6.90 2.4500 0 2 2 4 37.46 3.75 2.4007 -2 4 1 4 40.73 13.25 2.2152 1 5 1 4 42.26 1.73 2.1385 0 4 2 4 43.43 15.19 2.0836 -2 4 2 4 43.56 4.43 2.0779 2 2 1 4 43.70 6.36 2.0713 -1 5 2 4 43.71 5.47 2.0708 -3 1 1 4 44.29 4.74 2.0450 1 1 2 4 45.62 3.02 1.9887 -1 7 1 4 46.53 2.99 1.9518 -3 1 2 4 47.94 1.18 1.8976 0 8 0 2 47.97 13.76 1.8964 2 6 0 4 48.48 12.43 1.8775 2 4 1 4 48.87 2.81 1.8635 -1 1 3 4 50.44 12.73 1.8094 0 6 2 4 50.81 5.51 1.7968 -2 2 3 4 51.12 1.16 1.7868 3 3 0 4 51.28 2.01 1.7817 0 8 1 4 51.46 9.75 1.7758 -2 6 2 4 53.70 1.05 1.7068 1 5 2 4 54.53 2.20 1.6828 0 2 3 4 55.25 6.24 1.6625 -2 4 3 4 55.97 3.32 1.6430 2 6 1 4 56.85 5.44 1.6195 2 0 2 2 56.89 2.95 1.6184 -2 8 1 4 56.91 1.90 1.6181 1 9 0 4 58.25 1.43 1.5839 2 2 2 4 58.33 1.68 1.5820 2 8 0 4 58.45 1.07 1.5789 -3 3 3 4 60.49 2.23 1.5304 0 8 2 4 60.98 1.32 1.5194 3 3 1 4 61.40 1.19 1.5099 -2 8 2 4 64.87 3.88 1.4374 -4 4 1 4 65.12 1.95 1.4324 4 0 0 2 65.95 2.71 1.4164 -2 0 4 2 66.81 2.14 1.4002 -4 2 3 4 68.83 1.06 1.3640 2 6 2 4 68.87 4.59 1.3634 -2 10 1 4 70.24 1.01 1.3401 4 4 0 4 70.62 1.61 1.3338 -4 4 3 4 71.19 1.69 1.3244 -2 8 3 4 71.37 2.54 1.3216 -4 6 2 4 74.29 2.16 1.2767 0 8 3 4 76.17 1.37 1.2498 2 2 3 4 76.41 1.56 1.2465 4 6 0 4 76.41 1.32 1.2464 -4 0 4 2 76.73 1.50 1.2421 2 10 1 4 77.01 2.87 1.2382 4 2 1 4 77.48 1.37 1.2319 2 8 2 4 77.63 1.76 1.2300 -4 2 4 4 79.80 2.06 1.2019 -4 8 1 4 79.80 1.68 1.2018 2 4 3 4 79.92 2.17 1.2004 -4 8 2 4 83.54 1.41 1.1573 2 12 0 4 83.99 2.05 1.1523 0 6 4 4 85.12 4.01 1.1398 0 10 3 4 85.42 1.30 1.1366 0 12 2 4 87.18 1.10 1.1181 -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.