Information card for entry 9004496

Structure parameters

• Mineral name: Pargasite
• Formula: Al1.89 Ca2.21 F2 Ga1.01 Mg4.1 Na1.62 O22 Si6
• Calculated formula: Al1.89 Ca2.21 F2 Ga1.01 Mg4.1 Na1.62 O22 Si6
• Title of publication: Synthetic fluoro-amphiboles: site preferences of Al, Ga, Sc and inductive effects on mean bond-lengths of octahedra Sample: A4
• Authors of publication: Oberti, R.; Hawthorne, F. C.; Camara, F.; Raudsepp, M.
• Journal of publication: The Canadian Mineralogist
• Year of publication: 1998
• Journal volume: 36
• Pages of publication: 1245 - 1252
• a: 9.85 Å
• b: 17.934 Å
• c: 5.301 Å
• α: 90°
• β: 105.32°
• γ: 90°
• Cell volume: 903.146 ų
• Number of distinct elements: 8
• Space group number: 12
• Hermann-Mauguin space group symbol: C 1 2/m 1
• Hall space group symbol: -C 2y
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No