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 = 0.56 GPa _database_code_amcsd 0004654 CELL PARAMETERS: 6.2630 15.1630 5.6620 90.000 114.240 90.000 SPACE GROUP: C2/c X-RAY WAVELENGTH: 1.541838 Cell Volume: 490.290 Density (g/cm3): 2.391 MAX. ABS. INTENSITY / VOLUME**2: 11.94558671 RIR: 1.627 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 11.67 69.54 7.5815 0 2 0 2 20.82 100.00 4.2673 0 2 1 4 23.47 13.90 3.7908 0 4 0 2 23.50 3.13 3.7849 1 3 0 4 28.27 5.82 3.1563 1 1 1 4 29.23 77.23 3.0556 0 4 1 4 31.22 53.31 2.8646 -2 2 1 4 31.33 2.08 2.8554 2 0 0 2 32.20 13.73 2.7801 -1 1 2 4 33.54 41.74 2.6722 2 2 0 4 34.63 4.82 2.5901 -1 5 1 4 34.75 1.20 2.5814 0 0 2 2 36.07 12.39 2.4898 -2 0 2 2 36.40 1.88 2.4680 -1 3 2 4 36.78 8.49 2.4436 0 2 2 4 37.52 2.15 2.3969 -2 4 1 4 40.83 14.42 2.2099 1 5 1 4 42.36 1.24 2.1337 0 4 2 4 43.49 16.30 2.0810 -2 4 2 4 43.72 5.19 2.0705 2 2 1 4 43.77 10.43 2.0683 -1 5 2 4 43.82 5.12 2.0660 -3 1 1 4 44.45 6.64 2.0379 1 1 2 4 45.67 3.59 1.9863 -1 7 1 4 46.60 4.81 1.9489 -3 1 2 4 48.00 2.85 1.8954 0 8 0 2 48.08 20.01 1.8924 2 6 0 4 48.65 14.35 1.8717 2 4 1 4 48.98 3.34 1.8598 -1 1 3 4 50.54 16.07 1.8058 0 6 2 4 50.89 3.94 1.7943 -2 2 3 4 51.28 1.07 1.7814 3 3 0 4 51.35 1.92 1.7793 0 8 1 4 51.53 7.87 1.7736 -2 6 2 4 53.86 1.70 1.7021 1 5 2 4 54.69 3.34 1.6782 0 2 3 4 55.34 7.74 1.6602 -2 4 3 4 56.13 3.67 1.6386 2 6 1 4 56.98 2.95 1.6162 -2 8 1 4 56.99 2.19 1.6159 1 9 0 4 57.08 7.06 1.6135 2 0 2 2 58.48 1.10 1.5782 2 2 2 4 58.53 1.86 1.5770 -3 3 3 4 60.61 1.70 1.5278 0 8 2 4 61.21 2.01 1.5142 3 3 1 4 61.49 1.20 1.5081 -2 8 2 4 62.27 1.08 1.4911 -2 6 3 4 63.97 1.92 1.4555 -3 7 2 4 65.04 5.13 1.4340 -4 4 1 4 65.36 2.59 1.4277 4 0 0 2 65.64 1.01 1.4224 2 8 1 4 66.08 3.46 1.4140 -2 0 4 2 66.92 2.87 1.3983 -4 2 3 4 67.83 1.17 1.3816 -1 1 4 4 68.97 5.92 1.3616 -2 10 1 4 70.48 1.24 1.3361 4 4 0 4 70.73 1.40 1.3320 -4 4 3 4 70.94 1.34 1.3285 -1 11 1 4 71.30 2.07 1.3227 -2 8 3 4 71.51 2.94 1.3194 -4 6 2 4 74.47 2.58 1.2741 0 8 3 4 76.49 1.17 1.2453 2 2 3 4 76.53 1.18 1.2449 -4 0 4 2 76.66 1.24 1.2431 4 6 0 4 76.91 1.46 1.2396 2 10 1 4 77.34 3.38 1.2338 4 2 1 4 77.73 1.83 1.2286 2 8 2 4 77.74 2.24 1.2284 -4 2 4 4 79.99 2.85 1.1995 -4 8 1 4 80.07 2.22 1.1985 -4 8 2 4 80.12 2.16 1.1978 2 4 3 4 82.10 1.10 1.1739 -5 3 3 4 83.70 1.15 1.1555 2 12 0 4 84.24 2.63 1.1495 0 6 4 4 85.07 1.05 1.1404 4 8 0 4 85.32 5.05 1.1377 0 10 3 4 85.57 1.41 1.1349 0 12 2 4 85.72 1.37 1.1334 -2 8 4 4 86.34 1.15 1.1268 -2 12 2 4 87.31 1.54 1.1167 -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.