CARYOCHROITE IS A RARE MINERAL FROM THE GROUP OF TITANOSILICATES: CRYSTAL STRUCTURE, CRYSTAL CHEMISTRY AND THERMAL PROPERTIES

S. V. Soboleva; Соболева С. В.; N. M. Boeva; Боева Н. М.; P. M. Kartashov; Карташов П. М.; N. S. Bortnikov; Бортников Н. С.

doi:10.31857/S2686739723600339

CARYOCHROITE IS A RARE MINERAL FROM THE GROUP OF TITANOSILICATES: CRYSTAL STRUCTURE, CRYSTAL CHEMISTRY AND THERMAL PROPERTIES

作者: Soboleva S.V.¹, Boeva N.M.¹, Kartashov P.M.¹, Bortnikov N.S.¹
隶属关系:
1. Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry of the Russian Academy of Sciences
期: 卷 510, 编号 2 (2023)
页面: 166-173
栏目: MINERALOGY
##submission.dateSubmitted##: 30.01.2025
##submission.datePublished##: 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

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详细

The crystal structure of rare titanosilicate cariochroite was deternined using X-ray powder and srlected area diffraction data. The crystallochemical formula proposed – [Na(Sr_0.5Ca_0.5)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.

关键词

titanosilicate, cariochroite, crystal structure, thermal analysis

参考

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