Information card for entry 9017236

Structure parameters

• Mineral name: Dravite
• Formula: Al5.85 B3 Ca0.13 Cr0.81 Fe0.09 H3.4 Mg2.25 Na0.63 O31 Si6
• Calculated formula: Al5.85 B3 Ca0.13 Cr0.81 Fe0.09 H3.4 Mg2.25 Na0.63 O31 Si6
• Title of publication: Ion substitutions and structural adjustment in Cr-bearing tourmalines Note: Sample 3
• Authors of publication: Vereshchagin, O. S.; Rozhdestvenskaya, I. V.; Frank-Kamenetskaya O V; Zolotarev, A. A.
• Journal of publication: European Journal of Mineralogy
• Year of publication: 2014
• Journal volume: 26
• Pages of publication: 309 - 321
• a: 15.933 Å
• b: 15.933 Å
• c: 7.213 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 1585.78 ų
• Number of distinct elements: 10
• 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