Information card for entry 9009491

Structure parameters

• Mineral name: Chayesite
• Formula: Fe0.85 K0.9 Mg4.15 Na0.2 O30 Si12
• Calculated formula: Fe0.85 K0.9 Mg4.15 Na0.2 O30 Si12
• Title of publication: The roedderite-chayesite series from Spanish lamproites: crystal chemical characterization
• Authors of publication: Alietti, E.; Brigatti, M. F.; Capedri, S.; Poppi, L.
• Journal of publication: Mineralogical Magazine
• Year of publication: 1994
• Journal volume: 58
• Pages of publication: 655 - 662
• a: 10.118 Å
• b: 10.118 Å
• c: 14.3 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 1267.81 ų
• Number of distinct elements: 6
• Space group number: 192
• Hermann-Mauguin space group symbol: P 6/m c c
• Hall space group symbol: -P 6 2c
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No