Information card for entry 9015226

Structure parameters

• Mineral name: Edgrewite
• Formula: Ca9 F0.96 O17.04 Si4
• Calculated formula: Ca9 F0.96 O17.04 Si4
• Title of publication: Edgrewite Ca9(SiO4)4F2-hydroxyledgrewite Ca9(SiO4)4(OH)2, a new series of calcium humite-group minerals from altered xenoliths in the ignimbrite of Upper Chegem caldera, Northern Caucasus, Kabardino-Balkaria, Russia
• Authors of publication: Galuskin, E. V.; Lazic, B.; Armbruster, T.; Galuskina, I. O.; Pertsev, N. N.; Gazeev, V. M.; Wlodyka, R.; Dulski, M.; Dzierzanowski, P.; Zadov, A. E.; Dubrovinsky, L. S.
• Journal of publication: American Mineralogist
• Year of publication: 2012
• Journal volume: 97
• Pages of publication: 1998 - 2006
• a: 5.0687 Å
• b: 11.3579 Å
• c: 15.4004 Å
• α: 100.598°
• β: 90°
• γ: 90°
• Cell volume: 871.474 ų
• Number of distinct elements: 4
• Space group number: 14
• Hermann-Mauguin space group symbol: P 21/b 1 1
• Hall space group symbol: -P 2xab
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No