Information card for entry 9001351

Structure parameters

• Mineral name: Biotite
• Formula: Al1.27 Ca0.007 Cr0.006 Fe0.942 K0.915 Mg1.476 Mn0.024 Na0.015 O12 Si2.736 Ti0.39
• Calculated formula: Al1.27 Ca0.007 Cr0.006 Fe0.942 K0.915 Mg1.476 Mn0.024 Na0.015 O12 Si2.736 Ti0.39
• Title of publication: Effect of Ti substitution in biotite-M crystal chemistry Sample 15 from a alkaline gabbro-peralkaline syenite rock, Mt St Hilaire, Quebec
• Authors of publication: Brigatti, M. F.; Galli, E.; Poppi, L.
• Journal of publication: American Mineralogist
• Year of publication: 1991
• Journal volume: 76
• Pages of publication: 1174 - 1183
• a: 5.329 Å
• b: 9.235 Å
• c: 10.19 Å
• α: 90°
• β: 100.2°
• γ: 90°
• Cell volume: 493.558 ų
• Number of distinct elements: 11
• 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