Information card for entry 9005015

Structure parameters

• Mineral name: Roedderite
• Formula: Fe0.12 K0.94 Mg4.75 Mn0.1 Na1.02 O30 Si12 Ti0.01
• Calculated formula: Fe0.12 K0.94 Mg4.75 Mn0.1 Na1.02 O30 Si12 Ti0.01
• Title of publication: Crystal chemistry of double-ring silicates: structure of roedderite at 100 and 300 K T= 100 K
• Authors of publication: Armbruster, T.
• Journal of publication: European Journal of Mineralogy
• Year of publication: 1989
• Journal volume: 1
• Pages of publication: 715 - 718
• a: 10.139 Å
• b: 10.139 Å
• c: 14.269 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 1270.32 ų
• Ambient diffraction temperature: 100 K
• Number of distinct elements: 8
• Space group number: 190
• Hermann-Mauguin space group symbol: P -6 2 c
• Hall space group symbol: P -6c -2c
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No