Cristobalite Diffraction data computed using the structure from the paper listed below, along with the cell parameters refined from the powder pattern for R060648 Pluth J J, Smith J V, Faber J Journal of Applied Physics 57 (1985) 1045-1049 Crystal structure of low cristobalite at 10, 293, and 473 K: Variation of framework geometry with temperature Sample: T = 473 K Locality: synthetic CELL PARAMETERS: 4.989000 4.989000 6.991000 90.00000 90.00000 90.00000 SPACE GROUP: P4_12_12 X-RAY WAVELENGTH: 1.541838 2-THETA INTENSITY D-SPACING H K L 22.00 100.00 4.0400 1 0 1 28.46 8.22 3.1352 1 1 1 31.45 9.95 2.8434 1 0 2 36.12 13.36 2.4856 2 0 0 36.39 4.95 2.4682 1 1 2 42.69 2.57 2.1170 2 1 1 44.85 2.65 2.0200 2 0 2 47.03 4.66 1.9310 1 1 3 48.63 4.91 1.8714 2 1 2 54.16 2.38 1.6925 2 0 3 57.12 4.01 1.6117 3 0 1 57.49 1.52 1.6022 2 1 3 60.34 2.38 1.5331 3 1 1 62.04 2.53 1.4950 3 0 2 65.11 2.48 1.4317 3 1 2 65.63 1.46 1.4217 2 0 4 66.83 1.37 1.3990 2 2 3 68.62 2.29 1.3669 2 1 4 70.46 1.70 1.3356 1 0 5 72.70 1.97 1.2998 3 1 3 73.93 2.01 1.2812 3 2 2 78.07 1.11 1.2233 4 0 1 79.43 1.49 1.2057 4 1 0 81.18 1.37 1.1840 3 2 3 81.81 1.46 1.1765 2 1 5 89.15 1.57 1.0977 1 1 6 89.16 1.02 1.0976 4 2 1 89.16 1.02 1.0976 4 2 1 XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.