Information card for entry 1539823

Structure parameters

• Chemical name: Na.27 K.01 Li.05 Be2.92 Mg.29 Cr.02 Fe.02 Al1.71 (Si6 O18) (H2 O).85
• Formula: Al1.71 Be2.92 Cr0.02 Fe0.02 H1.7 K0.01 Li0.05 Mg0.29 Na0.27 O18.85 Si6
• Calculated formula: Al1.71 Be2.901 Cr0.02 Fe0.02 K0.01 Li0.051 Mg0.29 Na0.27 O18.85 Si6
• Title of publication: Determination of the location of impurities in emerald from the data on precision refinement and analysis of the distribution of deformation electron density
• Authors of publication: Evdokimova, O.A.; Belokoneva, E.L.; Urusov, V.S.
• Journal of publication: Doklady Akademii Nauk SSSR
• Year of publication: 1989
• Journal volume: 306
• Pages of publication: 95 - 99
• a: 9.246 Å
• b: 9.246 Å
• c: 9.22 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 682.605 ų
• Number of distinct elements: 11
• Space group number: 192
• Hermann-Mauguin space group symbol: P 6/m c c
• Hall space group symbol: -P 6 2c
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No