Information card for entry 9001353

Structure parameters

• Mineral name: Biotite
• Formula: Al1.428 Ca0.001 Cr0.006 Fe1.296 K0.914 Mg1.245 Mn0.009 Na0.022 O12 Si2.764 Ti0.198
• Calculated formula: Al1.428 Ca0.001 Cr0.006 Fe1.296 K0.914 Mg1.245 Mn0.009 Na0.022 O12 Si2.764 Ti0.198
• Title of publication: Effect of Ti substitution in biotite-M crystal chemistry Sample 17 from a quartz diorite, Capo Vaticano, Italy
• 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: 5.323 Å
• b: 9.215 Å
• c: 10.21 Å
• α: 90°
• β: 100.14°
• γ: 90°
• Cell volume: 492.993 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