Information card for entry 9005788

Structure parameters

• Mineral name: Langbeinite
• Formula: Ca2 K2 O12 S3
• Calculated formula: Ca2 K2 O12 S3
• Title of publication: Phase transitions in langbeinites I: Crystal chemistry and structures of K-double sulfates of the langbeinite type M2++K2(SO4)3, M++=Mg,Ni,Co,Zn,Ca Sample: K2Ca2(SO4)3, T = 260 C
• Authors of publication: Speer, D.; Salje, E.
• Journal of publication: Physics and Chemistry of Minerals
• Year of publication: 1986
• Journal volume: 13
• Pages of publication: 17 - 24
• a: 10.4289 Å
• b: 10.4289 Å
• c: 10.4289 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 1134.27 ų
• Ambient diffraction temperature: 533.15 K
• Number of distinct elements: 4
• Space group number: 198
• Hermann-Mauguin space group symbol: P 21 3
• Hall space group symbol: P 2ac 2ab 3
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No