Information card for entry 9005951

Structure parameters

• Mineral name: Neptunite
• Formula: Fe2 K Li Na2 O24 Si8 Ti2
• Calculated formula: Fe2 K Li Na2 O24 Si8 Ti2
• Title of publication: Fe, Ti ordering and octahedral distortions in acentric neptunite: temperature dependent X-ray and neutron structure refinements and Mossbauer Spectroscopy Sample: T = 493 K
• Authors of publication: Kunz, M.; Armbruster, T.; Lager, G. A.; Schultz, A. J.; Goyette, R. J.; Lottermoser, W.; Amthauer, G.
• Journal of publication: Physics and Chemistry of Minerals
• Year of publication: 1991
• Journal volume: 18
• Pages of publication: 199 - 213
• a: 16.426 Å
• b: 12.532 Å
• c: 9.995 Å
• α: 90°
• β: 115.51°
• γ: 90°
• Cell volume: 1856.89 ų
• Ambient diffraction temperature: 493 K
• Number of distinct elements: 7
• Space group number: 9
• Hermann-Mauguin space group symbol: C 1 c 1
• Hall space group symbol: C -2yc
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No