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Information card for 2013918

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Coordinates

2013918.cif

Original IUCr paper

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Structure parameters

Common name trioctahedral mica
Chemical name potassium triiron(II) aluminasilaferrate(III) decaoxide dihydroxide
Formula - Al0.24 Fe3.76 H2 K O12 Si3 -
Calculated formula - Al0.244 Fe3.756 H2 K O12 Si3 -
Title of publication The ferri-annite KFe^2+^~3~(Al~0.26~Fe^3+^~0.76~Si~3~)O~10~(OH)~2~ at 100 and 270 K
Authors of publication Redhammer, Günther J.; Roth, G.
Journal of publication Acta Crystallographica, Section C
Year of publication 2004
Journal volume 60
Pages of publication i33 - i36
a 5.4208 ± 0.0014 Å
b 9.3881 ± 0.0017 Å
c 10.33 ± 0.003 Å
α 90°
β 100.06 ± 0.02°
γ 90°
Cell volume 517.6 ± 0.2 Å3
Cell temperature 270 ± 1 K
Ambient diffraction temperature 270 ± 1 K
Number of distinct elements 6
Hermann-Mauguin symmetry space group C 1 2/m 1
Hall symmetry space group -C 2y
Residual factor for observed reflections 0.0195
Weighted residual factors for all reflections included in the refinement 0.0486
Goodness-of-fit parameter for observed reflections 1.096
Diffraction radiation wavelength 0.71073 Å
Diffraction radiation type MoKα
Has coordinates Yes
Has disorder No
Has Fobs No

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