SiO2 Haines J, Leger J M, Gorelli F, Hanfland M Physical Review Letters 87 (2001) 155503-155503 Crystalline post-quartz phase in silica at high pressure Sample at ambient conditions _database_code_amcsd 0015284 CELL PARAMETERS: 7.6600 4.1000 5.0300 90.000 117.900 90.000 SPACE GROUP: P2_1/c X-RAY WAVELENGTH: 1.541838 Cell Volume: 139.610 Density (g/cm3): 4.287 MAX. ABS. INTENSITY / VOLUME**2: 9.464569791 RIR: 0.719 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 28.34 89.87 3.1495 -1 1 1 4 29.64 26.23 3.0138 0 1 1 4 32.93 100.00 2.7199 -2 1 1 4 36.27 67.31 2.4768 1 1 1 4 39.95 8.09 2.2565 3 0 0 2 40.59 7.86 2.2227 0 0 2 2 41.60 7.77 2.1708 -3 0 2 2 41.70 7.11 2.1658 -3 1 1 4 45.90 47.51 1.9769 3 1 0 4 46.25 15.07 1.9628 2 1 1 4 46.47 46.09 1.9540 0 1 2 4 47.39 42.70 1.9185 -3 1 2 4 50.20 1.18 1.8174 -4 0 2 2 52.99 11.99 1.7282 -4 1 1 4 58.34 2.98 1.5816 3 1 1 4 58.36 3.34 1.5811 -1 2 2 4 58.62 2.18 1.5747 -2 2 2 4 59.48 1.78 1.5540 2 0 2 2 59.60 23.93 1.5511 -2 1 3 4 60.84 1.27 1.5225 -3 1 3 4 61.07 52.26 1.5173 3 2 0 4 61.27 1.02 1.5128 -5 0 2 2 61.54 44.67 1.5069 0 2 2 4 61.78 2.03 1.5017 -1 1 3 4 62.30 42.62 1.4904 -3 2 2 4 65.38 1.46 1.4273 -4 1 3 4 66.07 11.72 1.4140 -5 1 1 4 71.67 3.26 1.3168 -1 3 1 4 72.16 9.32 1.3090 4 1 1 4 72.29 21.27 1.3070 3 0 2 2 72.33 1.13 1.3063 0 3 1 4 72.90 11.15 1.2975 -5 1 3 4 74.12 7.56 1.2792 -2 3 1 4 74.38 19.43 1.2754 -6 0 2 2 75.46 10.99 1.2598 1 1 3 4 75.66 14.58 1.2570 -3 0 4 2 76.08 8.96 1.2511 1 3 1 4 76.73 1.38 1.2421 -2 0 4 2 77.64 2.64 1.2298 -4 0 4 2 79.58 1.52 1.2047 -3 3 1 4 80.82 1.26 1.1892 -1 0 4 2 82.52 3.65 1.1690 3 3 0 4 82.77 3.70 1.1660 2 3 1 4 82.93 3.59 1.1642 0 3 2 4 83.61 3.61 1.1565 -3 3 2 4 86.20 2.03 1.1283 6 0 0 2 87.92 1.28 1.1106 -4 -3 1 4 87.94 2.40 1.1104 5 1 1 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.