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- Title
Nanohematite from Ferruginous Quartzites of Kursk Magnetic Anomaly According to Transmission Electron Microscopy Data.
- Authors
Zhukhlistov, A. P.; Novikov, V. M.
- Abstract
Transmission electron microscopy study of ferruginous quartzite (jaspilites) from the Lebedinsky field of Kursk magnetic anomaly has revealed for the first time hematite nanoformations (about 10 nm in size), sp. gr.R3¯, which coexist with hematite, sp. gr. R3¯c, in the same crystallographic orientation or manifest themselves as individual nanoinclusions in the substrate of poorly crystallized magnetite. On the assumption that, in correspondence with the energy-dispersive X-ray analysis data, octahedral sites in the hematite structure can be occupied by only Fe cations, several structural models are proposed explain the hematite symmetry lowering to R3¯.
- Subjects
TRANSMISSION electron microscopy; CRYSTALLOGRAPHY; HEMATITE; MAGNETITE; WINDOWLESS energy-dispersive X-ray analysis
- Publication
Crystallography Reports, 2018, Vol 63, Issue 1, p79
- ISSN
1063-7745
- Publication type
Article
- DOI
10.1134/S1063774518010224