Information card for entry 9004685

Structure parameters

• Mineral name: Megakalsilite
• Formula: Al K O4 Si
• Calculated formula: Al K O4 Si
• Title of publication: Megakalsilite, a new polymorph of KAlSiO4 from the Khibina alkaline massif, Kola Peninsula, Russia: mineral description and crystal structure
• Authors of publication: Khomyakov, A. P.; Nechelyustov, G. N.; Sokolova, E. V.; Bonaccorsi, E.; Merlino, S.; Pasero, M.
• Journal of publication: The Canadian Mineralogist
• Year of publication: 2002
• Journal volume: 40
• Pages of publication: 961 - 970
• a: 18.1111 Å
• b: 18.1111 Å
• c: 8.4619 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 2403.74 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