Mikhail Yu. Sidorov
Current Organizations / Institutes
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Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Mikhail Yu. Sidorov has a total of 7 co-authors. Here are the top co-authors by number of shared publications:
A. A. Kompanchenko
Geological Institute of the Kola Science Center RAS
1 shared publication- Ayya Bazai
Nanomaterials Research Centre, Kola Science Centre, Russian Academy of Sciences, 184209 Apatity, Russia
1 shared publication E. N. Fomina
Geological Institute of the Kola Science Center RAS
1 shared publicationE. N. Kozlov
Geological Institute of the Kola Science Center RAS
1 shared publication- Sergiy Vladimirovich Krivovichev
Kola Science Centre of the Russian Academy of Sciences
1 shared publication - Taras L. Panikorovskii
Kola Science Centre, Russian Academy of Sciences, Apatity, Russia
1 shared publication
Latest Publications
- 15 April 2024
- Published by The Russian Academy of Sciences in Zapiski RMO (Proceedings of the Russian Mineralogical Society)
- Vol. CLIII (2) , 105-116
Raman spectroscopy of kassite, lucasite-(Ce), La analogue of lucasite, and cafetite
Raman spectra of lucasite-(Ce), La-analogue of lucasite, kassite and cafetite are significantly different. Most evident differences were revealed in the position of bands corresponding to vibrational modes for bands assigned to symmetrical v1(Ti-O) and asymmetrical v3(O-Ti-O) stretching vibrations, as well as the bands determined by asymmetrical bending vibrations v4(transTiO6) and asymmetrical v3(O-Ti-O) stretching vibrations. Raman spectra of lucasite-(Ce) and La-analogue of lucasite are published for the first time. The presented data are valuable for the identification of cafetite and kassite group minerals using Raman spectroscopy.
- 15 April 2024
- Published by The Russian Academy of Sciences in Zapiski RMO (Proceedings of the Russian Mineralogical Society)
- Vol. CLIII (2) , 105-116
Raman spectroscopy of kassite, lucasite-(Ce), La analogue of lucasite, and cafetite
Raman spectra of lucasite-(Ce), La-analogue of lucasite, kassite and cafetite are significantly different. Most evident differences were revealed in the position of bands corresponding to vibrational modes for bands assigned to symmetrical v1(Ti-O) and asymmetrical v3(O-Ti-O) stretching vibrations, as well as the bands determined by asymmetrical bending vibrations v4(transTiO6) and asymmetrical v3(O-Ti-O) stretching vibrations. Raman spectra of lucasite-(Ce) and La-analogue of lucasite are published for the first time. The presented data are valuable for the identification of cafetite and kassite group minerals using Raman spectroscopy.
- Open Access
The Crystal Structure of Manganotychite, Na6Mn2(CO3)4(SO4), and Structural Relations in the Northupite Group
The crystal structure of manganotychite has been refined using the holotype specimen from the Alluaiv Mountain, Lovozero massif, Kola peninsula, Russia. The mineral is cubic, Fd, a = 14.0015(3) Å, V = 2744.88(18) Å3, Z = 8, R1 = 0.020 for 388 independently observed reflections. Manganotychite is isotypic to tychite and ferrotychite. Its crystal structure is based upon a three-dimensional infinite framework formed by condensation of MnO6 octahedra and CO3 groups by sharing common O atoms. The sulfate groups and Na+ cations reside in the cavities of the octahedral-triangular metal-carbonate framework. In terms of symmetry and basic construction of the octahedral-triangular framework, the crystal structure of manganotychite is identical to that of northupite, Na3Mg(CO3)2Cl. The transition northupite → tychite can be described as a result of the multiatomic 2Cl− → (SO4)2− substitution, where both chlorine and sulfate ions are the extra-framework constituents. However, the positions occupied by sulfate groups and chlorine ions correspond to different octahedral cavities within the skeletons of Na atoms. The crystal structure of northupite can be considered as an interpenetration of two frameworks: anionic [Mg(CO3)2]2− octahedral-triangular framework and cationic [ClNa3]2− framework with the antipyrochlore topology. Both manganotychite and northupite structure types can be described as a modification of the crystal structure of diamond (or the dia net) via the following steps: (i) replacement of a vertex of the dia net by an M4 tetrahedron (no symmetry reduction); (ii) attachment of (CO3) triangles to the triangular faces of the M4 tetrahedra (accompanied by the Fdm → Fd symmetry reduction); (iii) filling voids of the resulting framework by Na+ cations (no symmetry reduction); and (iv) filling voids of the Na skeleton by either sulfate groups (in tychite-type structures) or chlorine atoms (in northupite). As a result, the information-based structural complexity of manganotychite and northupite exceeds that of the dia net.Open AccessThe Crystal Structure of Manganotychite, Na6Mn2(CO3)4(SO4), and Structural Relations in the Northupite Group
The crystal structure of manganotychite has been refined using the holotype specimen from the Alluaiv Mountain, Lovozero massif, Kola peninsula, Russia. The mineral is cubic, Fd, a = 14.0015(3) Å, V = 2744.88(18) Å3, Z = 8, R1 = 0.020 for 388 independently observed reflections. Manganotychite is isotypic to tychite and ferrotychite. Its crystal structure is based upon a three-dimensional infinite framework formed by condensation of MnO6 octahedra and CO3 groups by sharing common O atoms. The sulfate groups and Na+ cations reside in the cavities of the octahedral-triangular metal-carbonate framework. In terms of symmetry and basic construction of the octahedral-triangular framework, the crystal structure of manganotychite is identical to that of northupite, Na3Mg(CO3)2Cl. The transition northupite → tychite can be described as a result of the multiatomic 2Cl− → (SO4)2− substitution, where both chlorine and sulfate ions are the extra-framework constituents. However, the positions occupied by sulfate groups and chlorine ions correspond to different octahedral cavities within the skeletons of Na atoms. The crystal structure of northupite can be considered as an interpenetration of two frameworks: anionic [Mg(CO3)2]2− octahedral-triangular framework and cationic [ClNa3]2− framework with the antipyrochlore topology. Both manganotychite and northupite structure types can be described as a modification of the crystal structure of diamond (or the dia net) via the following steps: (i) replacement of a vertex of the dia net by an M4 tetrahedron (no symmetry reduction); (ii) attachment of (CO3) triangles to the triangular faces of the M4 tetrahedra (accompanied by the Fdm → Fd symmetry reduction); (iii) filling voids of the resulting framework by Na+ cations (no symmetry reduction); and (iv) filling voids of the Na skeleton by either sulfate groups (in tychite-type structures) or chlorine atoms (in northupite). As a result, the information-based structural complexity of manganotychite and northupite exceeds that of the dia net.