Information card for entry 9000424

Structure parameters

• Mineral name: Perrierite-(La)
• Formula: La4 Mg2 O22 Si4 Ti3
• Calculated formula: La4 Mg2 O22 Si4 Ti3
• Title of publication: A re-investigation of the crystal structures of chevkinite and perrierite
• Authors of publication: Calvo, C.; Faggiani, R.
• Journal of publication: American Mineralogist
• Year of publication: 1974
• Journal volume: 59
• Pages of publication: 1277 - 1285
• a: 13.818 Å
• b: 5.677 Å
• c: 11.787 Å
• α: 90°
• β: 113.85°
• γ: 90°
• Cell volume: 845.672 ų
• Number of distinct elements: 5
• Space group number: 14
• Hermann-Mauguin space group symbol: P 1 21/a 1
• Hall space group symbol: -P 2yab
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No