CARYOCHROITE IS A RARE MINERAL FROM THE GROUP OF TITANOSILICATES: CRYSTAL STRUCTURE, CRYSTAL CHEMISTRY AND THERMAL PROPERTIES
- Authors: Soboleva S.V.1, Boeva N.M.1, Kartashov P.M.1, Bortnikov N.S.1
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Affiliations:
- Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of the Russian Academy of Sciences
- Issue: Vol 510, No 2 (2023)
- Pages: 166-173
- Section: MINERALOGY
- Submitted: 30.01.2025
- Published: 01.06.2023
- URL: https://edgccjournal.org/2686-7397/article/view/649647
- DOI: https://doi.org/10.31857/S2686739723600339
- EDN: https://elibrary.ru/UKZBDO
- ID: 649647
Cite item
Abstract
The crystal structure of rare titanosilicate cariochroite was deternined using X-ray powder and srlected area diffraction data. The crystallochemical formula proposed – [Na(Sr0.5Ca0.5)Mg]3[Fe\(_{8}^{{3 + }}\)Mn(\({\text{Fe}}_{{0.5}}^{{2 + }}{\kern 1pt} {{\square }_{{{\text{0}}{\text{.5}}}}}\))]10(Ti2Si12)O37(OH)14(Н2О)3. Monoclinic unit cell parameters are: a 16.550(3), b 5.281(2), c 24.25(3) Å, β 93.0°, Z = 2, sp. gr. P2/n. The crystal structure represent the new type of complex Ti–Si–nrt, provided the big volune canals contaning some exchange cations, OH groups and water molecules.
Keywords
About the authors
S. V. Soboleva
Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of the Russian Academy of Sciences
Email: boeva@igem.ru
Russia,
Moscow
N. M. Boeva
Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of the Russian Academy of Sciences
Author for correspondence.
Email: boeva@igem.ru
Russia,
Moscow
P. M. Kartashov
Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of the Russian Academy of Sciences
Email: boeva@igem.ru
Russia,
Moscow
N. S. Bortnikov
Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of the Russian Academy of Sciences
Email: boeva@igem.ru
Russia,
Moscow
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