Information card for entry 9000713

Structure parameters

• Mineral name: Sillimanite
• Formula: Al2 O5 Si
• Calculated formula: Al2 O5 Si
• Title of publication: Thermal expansion and high-temperature crystal chemistry of the Al2SiO5 polymorphs T = 800 deg C
• Authors of publication: Winter, J. K.; Ghose, S.
• Journal of publication: American Mineralogist
• Year of publication: 1979
• Journal volume: 64
• Pages of publication: 573 - 586
• a: 7.4998 Å
• b: 7.7255 Å
• c: 5.7978 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 335.923 ų
• Ambient diffraction temperature: 1073.15 K
• Number of distinct elements: 3
• Space group number: 62
• Hermann-Mauguin space group symbol: P b n m
• Hall space group symbol: -P 2c 2ab
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No