Information card for entry 9005860

Structure parameters

• Mineral name: Phenakite
• Formula: Be2 O4 Si
• Calculated formula: Be2 O4 Si
• Title of publication: High-temperature crystal chemistry of phenakite (Be2SiO4) and Chrysoberyl (BeAl2O4) Sample: T = 690 C
• Authors of publication: Hazen, R. M.; Finger, L. W.
• Journal of publication: Physics and Chemistry of Minerals
• Year of publication: 1987
• Journal volume: 14
• Pages of publication: 426 - 434
• a: 12.482 Å
• b: 12.482 Å
• c: 8.266 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 1115.31 ų
• Ambient diffraction temperature: 963.15 K
• Number of distinct elements: 3
• Space group number: 148
• Hermann-Mauguin space group symbol: R -3 :H
• Hall space group symbol: -R 3
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No