Abstract
The crystal structure of hibbingite, natural γ-Fe2+2Cl(OH)3, a mineral of the atacamite group, was studied on a sample from the Oktyabr’sky mine, Norilsk district, Siberia, Russia. The structure was solved by direct methods based on single crystal X-ray diffraction data and refined to R=2.07% [520 reflections with I>2σ(I)]. The mineral is isostructural with atacamite and is orthorhombic, Pnma, a=6.3373(2), b=6.9892(2), c=9.3457(3) Å, V=413.95(3) Å3, Z=4. The structure contains Fe(1)(OH)4Cl2 octahedra which share Cl–O(1) edges to form chains running along the b axis and cross-linked by the chains of Fe(2)(OH)5Cl octahedra sharing O(2)–O(2) edges and running along the a axis.
Funding source: Russian Science Foundation
Award Identifier / Grant number: 14-17-00048
Funding statement: We thank Gerald Giester and anonymous referee for valuable comments and Evgeny Antipov for the editorial work. This study was supported by the Russian Science Foundation, grant no. 14-17-00048.
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Supplementary Material
The online version of this article offers supplementary material (https://doi.org/10.1515/zkri-2018-2124).
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