Information card for entry 9004695

Structure parameters

• Mineral name: Sewardite
• Formula: As2 Ca Fe2 H2 O10
• Calculated formula: As2 Ca Fe2 H2 O10
• Title of publication: Sewardite, CaFe2(AsO4)(OH)2, the Ca-analogue of carminite, from Tsumeb, Namibia: Description and crystal structure
• Authors of publication: Roberts, A. C.; Cooper, M. A.; Hawthorne, F. C.; Criddle, A. J.; Stirling, J. A. R.
• Journal of publication: The Canadian Mineralogist
• Year of publication: 2002
• Journal volume: 40
• Pages of publication: 1191 - 1198
• a: 16.461 Å
• b: 7.434 Å
• c: 12.131 Å
• α: 90°
• β: 90°
• γ: 90°
• Cell volume: 1484.48 ų
• Number of distinct elements: 5
• Space group number: 66
• Hermann-Mauguin space group symbol: C c c m
• Hall space group symbol: -C 2 2c
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No