Information card for entry 9017293

Structure parameters

• Mineral name: Tridymite
• Formula: O2 Si
• Calculated formula: O16 Si8
• Title of publication: The crystal structure at 220 C of orthothombic high tridymite from the Steinbach meteorite Note: T = 220 C
• Authors of publication: Dollase, W. A.
• Journal of publication: Acta Crystallographica
• Year of publication: 1967
• Journal volume: 23
• Pages of publication: 617 - 623
• a: 8.74 Å
• b: 5.04 Å
• c: 8.24 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 362.969 ų
• Ambient diffraction temperature: 493.15 K
• Number of distinct elements: 2
• Space group number: 20
• Hermann-Mauguin space group symbol: C 2 2 21 (a,b,c+1/4)
• Hall space group symbol: C 2c 2 (x,y,z-1/4)
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No