SiO2 Kuwayama Y, Hirose K, Sata N, Ohishi Y Science 309 (2005) 923-925 The pyrite-type high-pressure form of silica Sample: P = 271 GPa, T = 300 K _database_code_amcsd 0015438 CELL PARAMETERS: 3.9299 3.9299 3.9299 90.000 90.000 90.000 SPACE GROUP: Pa3 X-RAY WAVELENGTH: 1.541838 Cell Volume: 60.694 Density (g/cm3): 6.575 MAX. ABS. INTENSITY / VOLUME**2: 26.65640486 RIR: 1.320 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 39.73 100.00 2.2689 1 1 1 8 46.20 33.94 1.9649 2 0 0 6 52.03 53.76 1.7575 2 1 0 12 57.44 23.08 1.6044 2 1 1 24 67.40 53.89 1.3894 2 2 0 12 72.10 2.55 1.3100 2 2 1 24 81.18 78.59 1.1849 3 1 1 24 85.62 14.84 1.1345 2 2 2 8 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.