Information card for entry 9007057

Structure parameters

• Mineral name: Dioptase
• Formula: Cu H2 O4 Si
• Calculated formula: Cu H2 O4 Si
• Title of publication: The charge-density distribution, its multipole refinement and the antiferromagnetic structure of dioptase, Cu6[Si6O18].6H2O
• Authors of publication: Belokoneva, E. L.; Gubina, Y. K.; Forsyth, J. B.; Brown, P. J.
• Journal of publication: Physics and Chemistry of Minerals
• Year of publication: 2002
• Journal volume: 29
• Pages of publication: 430 - 438
• a: 8.819 Å
• b: 8.819 Å
• c: 8.819 Å
• α: 111.7°
• β: 111.7°
• γ: 111.7°
• Cell volume: 479.521 ų
• Number of distinct elements: 4
• Space group number: 148
• Hermann-Mauguin space group symbol: R -3 :R
• Hall space group symbol: -P 3*
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No