Information card for entry 9009950

Structure parameters

• Mineral name: Turkestanite
• Formula: Ca1.4 K0.53 Na0.5 O20 Si8 Th
• Calculated formula: Ca1.4 K0.53 Na0.5 O20 Si8 Th
• Title of publication: Crystal structure of a new mineral turkestanite: a calcium analogue of steacyite Locality: Dzhelisu massif, Alayskiy range, Tien Shan, Kyrgyzstan Note: calculated Biso's disagree with reported values Note: z(O3) adjusted to match reported bond lengths
• Authors of publication: Kabalov Yu, K.; Sokolova, E. V.; Pautov, L. A.; Schneider, J.
• Journal of publication: Crystallography Reports
• Year of publication: 1998
• Journal volume: 43
• Pages of publication: 584 - 588
• a: 7.5792 Å
• b: 7.5792 Å
• c: 14.7042 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 844.672 ų
• Number of distinct elements: 6
• Space group number: 124
• Hermann-Mauguin space group symbol: P 4/m c c
• Hall space group symbol: -P 4 2c
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No