Information card for entry 9005790

Structure parameters

• Mineral name: Phenakite
• Formula: Be2 O4 Si
• Calculated formula: Be2 O4 Si
• Title of publication: High-pressure crystal chemistry of phenakite (Be2SiO4) and bertrandite (Be4Si2O7(OH)2) Sample: P = 16 kbar
• Authors of publication: Hazen, R. M.; Au, A. Y.
• Journal of publication: Physics and Chemistry of Minerals
• Year of publication: 1986
• Journal volume: 13
• Pages of publication: 69 - 78
• a: 12.437 Å
• b: 12.437 Å
• c: 8.228 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 1102.19 ų
• Ambient diffracton pressure: 1600000 kPa
• 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