Information card for entry 9001346

Structure parameters

• Mineral name: Biotite
• Formula: Al1.369 Ca0.03 Cr0.048 Fe0.39 K0.955 Mg2.166 Mn0.021 Na0.015 O12 Si2.856 Ti0.144
• Calculated formula: Al1.369 Ca0.03 Cr0.048 Fe0.39 K0.955 Mg2.166 Mn0.021 Na0.015 O12 Si2.856 Ti0.144
• Title of publication: Effect of Ti substitution in biotite-M crystal chemistry Sample 8 from a lamproite rock, Puebla De Mula, 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: 5.317 Å
• b: 9.207 Å
• c: 10.232 Å
• α: 90°
• β: 99.98°
• γ: 90°
• Cell volume: 493.314 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