Information card for entry 9013982

Structure parameters

• Mineral name: Pezzottaite
• Formula: Al2 Be2 Cs0.75 H6 Li Na0.226 O18.285 Si6
• Calculated formula: Al2 Be2 Cs0.749667 H0.57 Li Na0.225667 O18.285 Si6
• Title of publication: Alkali metals in beryl and their role in the formation of derivative structural motifs: Comparative crystal chemistry of vorobyevite and pezzottaite Locality: Sakavalana granitic pegmatite, Antsirabe, Fianarantsoa Province, Madagascar Note: T = 100 K
• Authors of publication: Yakubivich, O. V.; Pekov, I. V.; Steele, I. M.; Massa, W.; Chukanov, N. V.
• Journal of publication: Crystallography Reports
• Year of publication: 2009
• Journal volume: 54
• Pages of publication: 399 - 412
• a: 15.955 Å
• b: 15.955 Å
• c: 27.81 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 6130.91 ų
• Ambient diffraction temperature: 100 K
• Number of distinct elements: 8
• Space group number: 167
• Hermann-Mauguin space group symbol: R -3 c :H
• Hall space group symbol: -R 3 2"c
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No