Information card for entry 9001003

Structure parameters

• Mineral name: Dumortierite
• Formula: Al6.73 B O18 Si2.95
• Calculated formula: Al6.73 B O18 Si2.95
• Title of publication: Crystal chemistry of some Fe- and Ti-poor dumortierites Sample: #11, USNM 141800, from Ambositra, Madagascar
• Authors of publication: Alexander, V. D.; Griffen, D. T.; Martin, T. J.
• Journal of publication: American Mineralogist
• Year of publication: 1986
• Journal volume: 71
• Pages of publication: 786 - 794
• a: 11.802 Å
• b: 20.222 Å
• c: 4.695 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 1120.51 ų
• Number of distinct elements: 4
• Space group number: 62
• Hermann-Mauguin space group symbol: P m c n
• Hall space group symbol: -P 2n 2a
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No