Information card for entry 9010180

Structure parameters

• Mineral name: Annite
• Formula: Al1.34 Fe1.35 K0.92 Mg1.11 Na0.07 O12 Si2.72 Ti0.18
• Calculated formula: Al1.34 Fe1.35 K0.92 Mg1.11 Na0.07 O12 Si2.72 Ti0.18
• Title of publication: Crystal chemistry of trioctahedral micas in alkaline and subalkaline volcanic rocks: A case study from Mt. Sassetto (Tolfa district, Latium, central Italy) polytype
• Authors of publication: Laurora, A.; Brigatti, M. F.; Mottana, A.; Malferrari, D.; Caprilli, E.
• Journal of publication: American Mineralogist
• Year of publication: 2007
• Journal volume: 92
• Pages of publication: 468 - 480
• a: 5.3213 Å
• b: 9.2034 Å
• c: 10.1048 Å
• α: 90°
• β: 99.954°
• γ: 90°
• Cell volume: 487.424 ų
• Number of distinct elements: 8
• Space group number: 12
• Hermann-Mauguin space group symbol: C 1 2/m 1
• Hall space group symbol: -C 2y
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No