Cristobalite Dove M T, Craig M S, Keen D A, Marshall W G, Redfern S A T, Trachenko K O, Tucker M G Mineralogical Magazine 64 (2000) 569-576 Crystal structure of the high-pressure monoclinic phase-II of cristobalite, SiO2 Locality: synthetic Note: P = 3.5 GPa, refinement by unconstrained Rietveld analysis _database_code_amcsd 0014541 CELL PARAMETERS: 8.3780 4.6018 9.0568 90.000 124.949 90.000 SPACE GROUP: P2_1/c X-RAY WAVELENGTH: 1.541838 Cell Volume: 286.205 Density (g/cm3): 2.788 MAX. ABS. INTENSITY / VOLUME**2: 9.283301430 RIR: 1.084 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 22.51 5.09 3.9498 -1 1 1 4 22.74 40.14 3.9113 0 1 1 4 23.11 100.00 3.8487 -2 0 2 2 23.27 79.34 3.8228 1 1 0 4 23.97 67.27 3.7118 0 0 2 2 27.65 9.60 3.2264 -1 1 2 4 28.97 17.84 3.0825 -2 1 1 4 29.50 75.21 3.0282 1 1 1 4 30.27 39.76 2.9523 -2 1 2 4 30.95 4.31 2.8891 0 1 2 4 32.10 16.57 2.7887 -3 0 2 2 32.54 25.51 2.7519 2 1 0 4 33.37 17.91 2.6847 1 0 2 2 35.98 4.29 2.4960 -2 1 3 4 36.42 8.11 2.4669 -1 1 3 4 37.72 2.13 2.3849 -3 1 2 4 39.14 10.41 2.3015 -3 1 1 4 39.82 6.39 2.2638 2 1 1 4 39.84 16.31 2.2624 -2 0 4 2 40.24 3.38 2.2410 -3 1 3 4 40.94 13.31 2.2045 -1 2 1 4 41.07 8.12 2.1978 0 2 1 4 41.39 1.27 2.1817 1 2 0 4 41.53 1.37 2.1744 -3 0 4 2 44.16 10.39 2.0510 -1 2 2 4 45.09 2.30 2.0109 2 0 2 2 45.41 2.86 1.9972 1 2 1 4 45.95 1.01 1.9749 -2 2 2 4 46.17 10.16 1.9660 -3 1 4 4 46.43 2.31 1.9556 0 2 2 4 47.12 1.18 1.9286 -1 1 4 4 47.23 1.38 1.9244 -4 0 4 2 48.16 3.94 1.8894 -4 1 3 4 49.46 16.16 1.8426 2 1 2 4 49.88 2.89 1.8283 1 1 3 4 51.25 1.04 1.7824 -4 1 1 4 51.47 6.45 1.7754 -4 1 4 4 51.49 3.77 1.7748 -3 2 2 4 52.37 1.84 1.7471 1 2 2 4 52.61 1.44 1.7396 -3 2 1 4 53.15 1.95 1.7231 2 2 1 4 53.22 1.15 1.7212 0 1 4 4 53.37 6.58 1.7168 4 0 0 2 54.45 1.09 1.6850 0 2 3 4 54.65 1.94 1.6793 -3 1 5 4 56.01 3.09 1.6418 -5 0 4 2 56.58 2.20 1.6265 -5 0 2 2 56.73 12.11 1.6228 3 2 0 4 58.48 3.03 1.5783 1 0 4 2 58.65 2.89 1.5741 -5 1 3 4 59.14 6.84 1.5623 -1 1 5 4 59.20 2.72 1.5607 -1 2 4 4 60.02 2.33 1.5413 -4 2 2 4 60.09 1.70 1.5397 -4 2 3 4 60.75 3.45 1.5246 2 1 3 4 62.53 1.27 1.4855 -4 0 6 2 62.78 1.31 1.4802 -4 2 1 4 62.97 5.31 1.4761 -4 2 4 4 64.51 8.37 1.4445 0 2 4 4 64.79 3.33 1.4389 -2 3 1 4 65.08 2.65 1.4333 -3 1 6 4 65.08 2.87 1.4332 1 3 1 4 65.51 1.64 1.4249 -2 3 2 4 65.66 1.95 1.4220 4 1 1 4 65.89 4.12 1.4176 0 3 2 4 66.09 2.56 1.4137 -4 1 6 4 66.26 2.02 1.4105 -2 2 5 4 66.75 10.54 1.4014 -5 0 6 2 66.80 5.65 1.4005 2 3 0 4 68.99 3.73 1.3613 -1 0 6 2 69.17 6.47 1.3582 -1 3 3 4 70.00 1.12 1.3440 -3 3 2 4 70.10 3.31 1.3424 2 0 4 2 70.21 1.17 1.3406 -5 1 6 4 70.46 4.25 1.3365 -5 2 4 4 70.74 1.12 1.3319 1 3 2 4 70.92 2.08 1.3289 -6 0 2 2 70.94 1.15 1.3285 -3 3 1 4 70.96 10.63 1.3282 -5 2 2 4 71.40 3.35 1.3212 2 3 1 4 71.72 3.84 1.3161 5 1 0 4 72.42 3.34 1.3050 3 2 2 4 72.50 2.26 1.3038 0 3 3 4 72.62 2.68 1.3018 -6 1 5 4 72.74 3.23 1.3001 4 0 2 2 73.49 2.30 1.2887 2 1 4 4 75.77 2.24 1.2555 1 1 5 4 75.91 1.24 1.2534 -3 3 4 4 76.33 1.03 1.2475 0 2 5 4 77.08 1.66 1.2373 0 0 6 2 77.35 2.16 1.2336 -4 3 2 4 77.36 4.64 1.2335 -2 2 6 4 77.41 4.27 1.2329 -4 3 3 4 78.41 1.08 1.2196 2 3 2 4 79.91 4.57 1.2005 -6 1 1 4 80.36 3.41 1.1948 0 1 6 4 81.39 4.29 1.1823 0 3 4 4 81.64 2.02 1.1793 5 2 0 4 82.56 3.22 1.1685 -3 3 5 4 83.83 1.03 1.1540 3 0 4 2 84.15 1.40 1.1504 0 4 0 2 87.90 1.99 1.1108 2 1 5 4 88.52 1.43 1.1046 4 1 3 4 88.76 2.79 1.1023 -2 4 2 4 88.99 1.31 1.1000 1 3 4 4 89.10 2.44 1.0989 0 4 2 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.