Information card for entry 9013621

Structure parameters

• Mineral name: Hercynite
• Formula: Al1.948 Fe0.924 Mg0.116 O4
• Calculated formula: Al1.948 Fe0.924 Mg0.116 O4
• Title of publication: Closure temperatures of intracrystalline ordering in anatectic and metamorphic hercynite, Fe2+Al2O4 Note: Sample AVMa8.9 Locality: El Hoyazo, lavas of the Neogene Volcanic Province of SE Spain
• Authors of publication: Lavina, B.; Cesare, B.; Alvarez-Valero A M; Uchida, H.; Downs, R. T.; Koneva, A.; Dera, P.
• Journal of publication: American Mineralogist
• Year of publication: 2009
• Journal volume: 94
• Pages of publication: 657 - 665
• a: 8.1511 Å
• b: 8.1511 Å
• c: 8.1511 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 541.563 ų
• Number of distinct elements: 4
• Space group number: 227
• Hermann-Mauguin space group symbol: F d -3 m :2
• Hall space group symbol: -F 4vw 2vw 3
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No