| Name: | QUARTZ | ||
| Specification: | [17], beta, structure type - beta-quartz, at 920oK | ||
| Formula: | SiO2 | ||
| Symmetry Class: | hexagonal | ||
| Space Group: | P 6(2)22 | ||
| Unit Cell Parameters: | a = 4.9972 | c = 5.4571 | ||
| Number of Formula Unit: | Z = 3 | Unit Cell Volume, Å3: | Vc = 118.02 |
| Number of Atomic Position per full Unit Cell: | P/U = 9 | Molar Volume, cm3/mol: | Vm = 23.70 |
| Number of Reflexes used in Structure Determination: | NR = 140 | X-ray density, g/cm3: | p = 2.54 |
| R-factor: | R = 0.0300 | MU, 1/cm: | µ = 87.348 |
| Wave Length for Calculated Powder Diffraction Patterns: | Cu=1.54056 | Mass attenuation coefficient, cm2/g: | µ/p = 34.452 |
| Theta-Interval for CPDP: | T/I = 1-45 | ||