Information card for entry 1524087

Structure parameters

• Chemical name: K2 (Fe2.786 Mg2.321 Ti0.550) (Al2.413 Si5.587 O20) (O H)4
• Mineral name: Biotite
• Formula: Al2.413 Fe2.786 H4 K2 Mg2.321 O24 Si5.587 Ti0.55
• Calculated formula: Al2.416 Fe2.784 K2 Mg2.322 O24 Si5.584 Ti0.552
• Title of publication: Crystal chemistry of a metamorphic Biotite and its significance in water barometry
• Authors of publication: Bohlen, S.R.; Peacor, D.R.; Essene, E.J.
• Journal of publication: American Mineralogist
• Year of publication: 1980
• Journal volume: 65
• Pages of publication: 55 - 62
• a: 5.357 Å
• b: 9.245 Å
• c: 20.234 Å
• α: 90°
• β: 94.978°
• γ: 90°
• Cell volume: 998.318 ų
• Number of distinct elements: 8
• Space group number: 15
• Hermann-Mauguin space group symbol: C 1 2/c 1
• Hall space group symbol: -C 2yc
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No