Information card for entry 9017660

Structure parameters

• Mineral name: Oxy-dravite
• Formula: Al6.624 B3 Fe0.6 H3.194 Mg1.776 Na0.866 O31 Si6
• Calculated formula: Al19.872 B9 Fe1.8 H9.582 Mg5.328 Na2.598 O93.072 Si18
• Title of publication: First accurate location of two proton sites in tourmaline: A single-crystal neutron diffraction study of oxy-dravite Note: H1 site on the three-fold axis
• Authors of publication: Gatta, G. D.; Bosi, F.; McIntyre, G. J.; Skogby, H.
• Journal of publication: Mineralogical Magazine
• Year of publication: 2014
• Journal volume: 78
• Pages of publication: 681 - 692
• a: 15.9272 Å
• b: 15.9272 Å
• c: 7.2001 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 1581.79 ų
• Number of distinct elements: 8
• 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