Information card for entry 9005872

Structure parameters

• Mineral name: Ilvaite
• Formula: Ca Fe3 H O9 Si2
• Calculated formula: Ca Fe3 H O9 Si2
• Title of publication: Phase transitions in ilvaite, a mixed-valence iron silicate II. A single-crystal X-ray diffraction study and Landau theory of the monoclinic to orthorhombic phase transition induced by charge delocalization Sample: T = 320 K
• Authors of publication: Ghose, S.; Tsukimura, K.; Hatch, D. M.
• Journal of publication: Physics and Chemistry of Minerals
• Year of publication: 1989
• Journal volume: 16
• Pages of publication: 483 - 496
• a: 13.0398 Å
• b: 8.8217 Å
• c: 5.8644 Å
• α: 90°
• β: 90.244°
• γ: 90°
• Cell volume: 674.595 ų
• Ambient diffraction temperature: 320 K
• Number of distinct elements: 5
• Space group number: 14
• Hermann-Mauguin space group symbol: P 1 21/a 1
• Hall space group symbol: -P 2yab
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No