Tridymite Kihara K, Matsumoto T, Imamura M Zeitschrift fur Kristallographie 177 (1986) 27-38 Structural change of orthorhombic-I tridymite with temperature: A study based on second-order thermal-vibrational parameters Note: Dollase's model, T = 493 K Locality: synthetic refractory silica brick _database_code_amcsd 0020932 CELL PARAMETERS: 8.7560 5.0240 8.2130 90.000 90.000 90.000 SPACE GROUP: C222_1 X-RAY WAVELENGTH: 1.541838 Cell Volume: 361.291 Density (g/cm3): 2.209 MAX. ABS. INTENSITY / VOLUME**2: 11.07892341 RIR: 1.633 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 20.28 61.99 4.3780 2 0 0 2 20.38 100.00 4.3576 1 1 0 4 21.64 86.29 4.1065 0 0 2 2 23.02 31.48 3.8634 2 0 1 4 23.11 64.88 3.8494 1 1 1 4 29.83 9.14 2.9951 2 0 2 4 29.90 26.38 2.9886 1 1 2 4 35.57 23.71 2.5237 3 1 0 4 35.74 9.96 2.5120 0 2 0 2 37.27 1.67 2.4124 3 1 1 4 37.44 2.50 2.4022 0 2 1 4 38.80 6.46 2.3212 2 0 3 4 38.85 8.65 2.3181 1 1 3 4 42.02 2.42 2.1501 3 1 2 4 42.75 3.73 2.1152 4 0 1 4 42.95 6.23 2.1060 2 2 1 4 44.11 2.96 2.0533 0 0 4 2 47.22 2.31 1.9247 2 2 2 4 49.05 4.41 1.8574 1 1 4 4 53.61 2.41 1.7097 4 0 3 4 53.77 3.12 1.7048 2 2 3 4 55.58 2.45 1.6536 5 1 0 4 55.70 1.55 1.6503 4 2 0 4 56.79 2.34 1.6211 5 1 1 4 56.91 2.57 1.6180 4 2 1 4 57.11 3.33 1.6128 1 3 1 4 60.17 2.94 1.5379 2 0 5 4 60.21 4.47 1.5370 1 1 5 4 60.34 1.02 1.5339 5 1 2 4 60.46 1.33 1.5313 4 2 2 4 60.65 1.49 1.5269 1 3 2 4 62.12 1.38 1.4943 2 2 4 4 63.78 1.32 1.4593 6 0 0 2 64.11 1.49 1.4525 3 3 0 4 65.23 1.74 1.4303 3 3 1 4 66.00 2.15 1.4154 5 1 3 4 66.11 1.46 1.4134 4 2 3 4 66.29 1.41 1.4099 1 3 3 4 71.86 1.38 1.3138 4 0 5 4 72.00 2.00 1.3116 2 2 5 4 73.82 1.14 1.2837 1 3 4 4 75.32 1.58 1.2619 6 2 0 4 76.36 1.21 1.2472 6 2 1 4 76.77 1.43 1.2416 0 4 1 4 79.69 1.43 1.2032 3 1 6 4 82.83 1.30 1.1654 5 1 5 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.