Information card for entry 9001350

Structure parameters

• Mineral name: Biotite
• Formula: Al1.135 Ca0.002 Cr0.054 Fe0.498 K0.947 Mg2.088 Mn0.018 Na0.051 O12 Si2.904 Ti0.267
• Calculated formula: Al1.135 Ca0.002 Cr0.054 Fe0.498 K0.947 Mg2.088 Mn0.018 Na0.051 O12 Si2.904 Ti0.267
• Title of publication: Effect of Ti substitution in biotite-M crystal chemistry Sample 12 from a lamproite rock, Jummilla, Spain
• 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: 5.314 Å
• b: 9.19 Å
• c: 10.16 Å
• α: 90°
• β: 100.18°
• γ: 90°
• Cell volume: 488.359 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