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 = 3.15 GPa _database_code_amcsd 0004657 CELL PARAMETERS: 6.1620 14.9650 5.5800 90.000 115.380 90.000 SPACE GROUP: C2/c X-RAY WAVELENGTH: 1.541838 Cell Volume: 464.894 Density (g/cm3): 2.521 MAX. ABS. INTENSITY / VOLUME**2: 12.68130380 RIR: 1.638 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 11.83 62.68 7.4825 0 2 0 2 21.25 100.00 4.1810 0 2 1 4 23.78 8.75 3.7413 0 4 0 2 23.95 1.81 3.7152 1 3 0 4 29.16 4.96 3.0626 1 1 1 4 29.74 71.67 3.0044 0 4 1 4 31.66 48.75 2.8264 -2 2 1 4 32.16 1.21 2.7836 2 0 0 2 32.66 13.13 2.7418 -1 1 2 4 34.37 41.78 2.6089 2 2 0 4 35.07 6.16 2.5591 -1 5 1 4 36.41 15.17 2.4673 -2 0 2 2 36.92 2.39 2.4344 -1 3 2 4 37.66 8.85 2.3888 0 2 2 4 38.05 2.63 2.3652 -2 4 1 4 41.76 19.77 2.1628 1 5 1 4 43.28 1.85 2.0905 0 4 2 4 43.96 17.89 2.0597 -2 4 2 4 44.40 5.72 2.0404 -1 5 2 4 44.63 4.85 2.0305 -3 1 1 4 45.09 5.04 2.0107 2 2 1 4 45.45 1.09 1.9958 1 7 0 4 45.84 6.74 1.9795 1 1 2 4 46.28 4.82 1.9617 -1 7 1 4 47.13 5.23 1.9282 -3 1 2 4 48.68 2.00 1.8706 0 8 0 2 49.04 17.30 1.8576 2 6 0 4 49.88 2.86 1.8282 -1 1 3 4 50.04 10.83 1.8229 2 4 1 4 51.52 4.13 1.7740 -2 2 3 4 51.55 15.59 1.7730 0 6 2 4 52.14 8.05 1.7541 -2 6 2 4 52.15 1.64 1.7538 0 8 1 4 52.62 1.24 1.7393 3 3 0 4 55.30 1.57 1.6612 1 5 2 4 56.04 9.05 1.6410 -2 4 3 4 56.09 3.22 1.6396 0 2 3 4 57.58 3.03 1.6008 2 6 1 4 57.81 4.36 1.5950 -2 8 1 4 57.88 2.08 1.5932 1 9 0 4 59.05 6.70 1.5644 2 0 2 2 61.75 1.51 1.5022 0 8 2 4 62.29 1.83 1.4906 -2 8 2 4 62.81 1.34 1.4794 -3 7 1 4 63.10 1.56 1.4734 -2 6 3 4 63.17 1.99 1.4720 3 3 1 4 64.82 1.02 1.4384 -3 7 2 4 66.43 5.11 1.4074 -4 4 1 4 67.12 3.17 1.3945 -2 0 4 2 67.17 1.07 1.3937 0 6 3 4 67.20 1.18 1.3931 2 8 1 4 67.27 2.68 1.3918 4 0 0 2 67.67 3.26 1.3845 -4 2 3 4 69.31 1.43 1.3557 -1 1 4 4 70.02 4.82 1.3437 -2 10 1 4 72.00 1.91 1.3115 -1 11 1 4 72.31 1.34 1.3067 -2 8 3 4 72.45 1.26 1.3045 4 4 0 4 72.62 3.39 1.3019 -4 6 2 4 76.15 2.98 1.2501 0 8 3 4 77.35 1.22 1.2337 -4 0 4 2 78.59 2.27 1.2172 -4 2 4 4 78.67 1.49 1.2163 2 10 1 4 78.74 1.23 1.2154 4 6 0 4 79.24 1.17 1.2089 2 2 3 4 79.94 1.43 1.2001 2 8 2 4 80.03 2.76 1.1990 4 2 1 4 81.37 1.84 1.1826 -4 8 2 4 81.65 2.00 1.1792 -4 8 1 4 82.94 2.17 1.1642 2 4 3 4 85.28 1.90 1.1381 2 12 0 4 86.52 2.34 1.1249 0 6 4 4 87.19 1.12 1.1180 -2 8 4 4 87.21 1.52 1.1178 0 12 2 4 87.23 4.30 1.1176 0 10 3 4 87.32 1.25 1.1166 4 8 0 4 88.40 1.17 1.1058 -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.