Information card for entry 9005525

Structure parameters

• Mineral name: Phengite-3T
• Formula: Al1.9 Fe0.27 H2 K0.95 Mg0.34 Na0.01 O12 Si3.5 Ti0.03
• Calculated formula: Al1.9 Fe0.27 H2 K0.95 Mg0.34 Na0.01 O12 Si3.5 Ti0.03
• Title of publication: Coexisting 3T and 2M_1 polytypes of phengite from Cima Pal (Val Savenca, western Alps): Chemical and polytypic zoning and structural characterisation Sample: 3TG Locality: Cima Pal, Val Savenca, western Alps
• Authors of publication: Ivaldi, G.; Ferraris, G.; Curetti, N.; Compagnoni, R.
• Journal of publication: European Journal of Mineralogy
• Year of publication: 2001
• Journal volume: 13
• Pages of publication: 1025 - 1034
• a: 5.228 Å
• b: 5.228 Å
• c: 29.73 Å
• α: 90°
• β: 90°
• γ: 120°
• Cell volume: 703.715 ų
• Number of distinct elements: 9
• Space group number: 151
• Hermann-Mauguin space group symbol: P 31 1 2
• Hall space group symbol: P 31 2 (0 0 4)
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No