Information card for entry 9001663

Structure parameters

• Mineral name: Ungarettiite
• Formula: Ca0.03 K0.152 Mg0.29 Mn4.71 Na2.77 O24 Si8
• Calculated formula: Ca0.03 K0.152 Mg0.29 Mn4.71 Na2.77 O24 Si8
• Title of publication: A new anhydrous amphibole from the Hoskins mine, Grenfell, New South Wales, Australia: Description and crystal structure of ungarettiite, NaNa2(Mn2Mn3)Si8O22O2 Sample U2
• Authors of publication: Hawthorne, F. C.; Oberti, R.; Cannillo, E.; Sardone, N.; Zanetti, A.; Grice, J. D.; Ashley, P. M.
• Journal of publication: American Mineralogist
• Year of publication: 1995
• Journal volume: 80
• Pages of publication: 165 - 172
• a: 9.893 Å
• b: 18.041 Å
• c: 5.295 Å
• α: 90°
• β: 105.1°
• γ: 90°
• Cell volume: 912.419 ų
• Number of distinct elements: 7
• 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