Information card for entry 9002304

Structure parameters

• Mineral name: Biotite
• Formula: Al1.96 Fe1.36 H1.56 K0.98 Mg0.72 Na0.02 O12 Si2.68 Ti0.16
• Calculated formula: Al1.96 Fe1.36 H1.56 K0.98 Mg0.72 Na0.02 O12 Si2.68 Ti0.16
• Title of publication: Crystal chemistry of Al-rich biotites coexisting with muscovites in peraluminous granites Sample: CC1
• Authors of publication: Brigatti, M. F.; Frigieri, P.; Ghezzo c; Poppi, L.
• Journal of publication: American Mineralogist
• Year of publication: 2000
• Journal volume: 85
• Pages of publication: 436 - 448
• a: 5.328 Å
• b: 9.222 Å
• c: 10.197 Å
• α: 90°
• β: 100.26°
• γ: 90°
• Cell volume: 493.016 ų
• Number of distinct elements: 9
• 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