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 = 693 K Locality: synthetic refractory silica brick _database_code_amcsd 0020935 CELL PARAMETERS: 8.7420 5.0470 8.2620 90.000 90.000 90.000 SPACE GROUP: C222_1 X-RAY WAVELENGTH: 1.541838 Cell Volume: 364.527 Density (g/cm3): 2.189 MAX. ABS. INTENSITY / VOLUME**2: 16.67755796 RIR: 2.480 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 20.32 35.06 4.3710 2 0 0 2 20.32 64.94 4.3709 1 1 0 4 21.51 68.89 4.1310 0 0 2 2 23.02 13.39 3.8636 2 0 1 4 23.02 28.45 3.8635 1 1 1 4 29.76 8.43 3.0023 2 0 2 4 29.76 16.98 3.0023 1 1 2 4 35.57 11.20 2.5236 3 1 0 4 35.58 5.40 2.5235 0 2 0 2 38.64 6.51 2.3301 2 0 3 4 38.64 12.98 2.3301 1 1 3 4 41.95 3.98 2.1535 3 1 2 4 41.95 1.87 2.1535 0 2 2 4 42.80 1.07 2.1128 4 0 1 4 42.80 2.11 2.1128 2 2 1 4 43.83 1.28 2.0655 0 0 4 2 53.53 2.09 1.7119 4 0 3 4 53.53 4.06 1.7119 2 2 3 4 55.63 1.20 1.6521 5 1 0 4 55.63 1.10 1.6521 4 2 0 4 55.63 1.04 1.6520 1 3 0 4 59.84 1.33 1.5456 2 0 5 4 59.84 2.67 1.5456 1 1 5 4 63.89 1.24 1.4570 3 3 0 4 65.93 1.67 1.4167 5 1 3 4 65.94 1.71 1.4167 4 2 3 4 65.94 1.69 1.4167 1 3 3 4 71.59 1.18 1.3181 2 2 5 4 75.32 1.06 1.2618 6 2 0 4 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.