Information card for entry 9010156

Structure parameters

• Mineral name: Birnessite
• Formula: H4 K0.23 Mn O2.776
• Calculated formula: H1.552 K0.23 Mn O2.776
• Title of publication: Time-resolved structural analysis of K-and Ba-exchange reactions with synthetic Na-birnessite using synchrotron X-ray diffraction Locality: synthetic Sample: K-birnessite
• Authors of publication: Lopano, C. L.; Heaney, P. J.; Post, J. E.; Hanson, J.; Komarneni, S.
• Journal of publication: American Mineralogist
• Year of publication: 2007
• Journal volume: 92
• Pages of publication: 380 - 387
• a: 5.1371 Å
• b: 2.8476 Å
• c: 7.2131 Å
• α: 89.96°
• β: 100.75°
• γ: 89.702°
• Cell volume: 103.663 ų
• Number of distinct elements: 4
• Space group number: 2
• Hermann-Mauguin space group symbol: C -1
• Hall space group symbol: -P 1 (1/2*x+1/2*y,1/2*x-1/2*y,-z)
• Has coordinates: Yes
• Has disorder: No
• Has Fobs: No