Information card for entry 9007419

Structure parameters

• Mineral name: Topaz
• Formula: Fe0.117 Mg6.217 O14 Si2
• Calculated formula: Fe0.117 Mg6.217 O14 Si2
• Title of publication: Crystal structure and compression of an iron-bearing Phase A to 33 GPa
• Authors of publication: Holl, C. M.; Smyth, J. R.; Manghnani, M. H.; Amulele, G. M.; Sekar, M.; Frost, D. J.; Prakapenka, V. B.; Shen, G.
• Journal of publication: Physics and Chemistry of Minerals
• Year of publication: 2006
• Journal volume: 33
• Pages of publication: 192 - 199
• a: 7.8678 Å
• b: 7.8678 Å
• c: 9.5771 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 513.418 ų
• Number of distinct elements: 4
• Space group number: 173
• Hermann-Mauguin space group symbol: P 63
• Hall space group symbol: P 6c
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No