Quartz Glinnemann J, King H E, Schulz H, Hahn T, La Placa S J, Dacol F Zeitschrift fur Kristallographie 198 (1992) 177-212 Crystal structures of the low-temperature quartz-type phases of SiO2 and GeO2 at elevated pressure P = 0.0 GPa _database_code_amcsd 0011007 CELL PARAMETERS: 4.9210 4.9210 5.4163 90.000 90.000 120.000 SPACE GROUP: P3_121 X-RAY WAVELENGTH: 1.541838 Cell Volume: 113.590 Density (g/cm3): 2.635 MAX. ABS. INTENSITY / VOLUME**2: 35.49608771 RIR: 4.387 RIR based on corundum from Acta Crystallographica A38 (1982) 733-739 2-THETA INTENSITY D-SPACING H K L Multiplicity 20.84 20.26 4.2617 1 0 0 6 26.61 30.19 3.3492 0 1 1 6 26.61 69.81 3.3492 1 0 1 6 36.52 6.99 2.4605 1 1 0 3 39.42 6.17 2.2857 0 1 2 6 40.26 3.28 2.2402 1 1 1 6 42.42 5.36 2.1309 2 0 0 6 45.76 2.22 1.9829 0 2 1 6 45.76 1.05 1.9829 2 0 1 6 50.09 12.89 1.8211 1 1 2 6 54.82 3.27 1.6746 2 0 2 6 55.26 1.66 1.6624 1 0 3 6 59.91 5.05 1.5439 2 1 1 6 59.91 4.24 1.5439 1 2 1 6 63.96 1.81 1.4556 1 1 3 6 67.68 1.48 1.3844 1 2 2 6 67.68 4.44 1.3844 2 1 2 6 68.06 5.58 1.3775 0 2 3 6 68.06 1.46 1.3775 2 0 3 6 68.26 4.38 1.3741 3 0 1 6 73.36 1.83 1.2905 0 1 4 6 75.59 2.03 1.2580 0 3 2 6 79.79 2.51 1.2019 1 2 3 6 81.06 2.63 1.1863 1 1 4 6 ================================================================================ XPOW Copyright 1993 Bob Downs, Ranjini Swaminathan and Kurt Bartelmehs For reference, see Downs et al. (1993) American Mineralogist 78, 1104-1107.