Information card for entry 9014192

Structure parameters

• Mineral name: Fluor-schorl
• Formula: Al5.478 B3 Ca0.029 Fe3.522 Na0.971 O31 Si6
• Calculated formula: Al16.434 B9 Ca0.087 Fe10.566 Na2.913 O93 Si18
• Title of publication: Limitations of Fe2+ and Mn2+ site occupancy in tourmaline: Evidence from Fe2+ - and Mn2+ -rich tourmaline Note: sample bls2h2, heated a second time in air at 750 C for 72 h
• Authors of publication: Ertl, A.; Kolitsch, U.; Dyar, M. D.; Hughes, J. M.; Rossman, G. R.; Pieczka, A.; Henry, D. J.; Pezzotta, F.; Prowatke, S.; Lengauer, C. L.; Korner, W.; Brandstatter, F.; Francis, C. A.; Prem, M.; Tillmanns, E.
• Journal of publication: American Mineralogist
• Year of publication: 2012
• Journal volume: 97
• Pages of publication: 1402 - 1416
• a: 15.918 Å
• b: 15.918 Å
• c: 7.26 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 1593.1 ų
• Number of distinct elements: 7
• Space group number: 160
• Hermann-Mauguin space group symbol: R 3 m :H
• Hall space group symbol: R 3 -2"
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No