Information card for entry 9001945

Structure parameters

• Mineral name: Offretite
• Formula: Al5.4 Ca1.52 H19.678 K0.96 Mg0.97 O51.5 Si12.6
• Calculated formula: Al5.4 Ca1.52 H31 K0.96 Mg0.97 O51.5 Si12.6
• Title of publication: Crystal structure-crystal chemistry relationships in the zeolites erionite and offretite Sample #1 from Fitta
• Authors of publication: Gualtieri, A.; Artioli, G.; Passaglia, E.; Bigi, S.; Viani, A.; Hanson, J. C.
• Journal of publication: American Mineralogist
• Year of publication: 1998
• Journal volume: 83
• Pages of publication: 590 - 606
• a: 13.39 Å
• b: 13.39 Å
• c: 7.598 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 1179.75 ų
• Number of distinct elements: 7
• Space group number: 187
• Hermann-Mauguin space group symbol: P -6 m 2
• Hall space group symbol: P -6 2
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No