Сибирский федеральный университет

Тип публикации: статья из журнала

Год издания: 2020

Идентификатор DOI: 10.1002/jrs.6005

Ключевые слова: daughter mineral, fe-oxyhydroxides, fluid inclusion, rinneite, weathering

Аннотация: Solid daughter phases in fluid and salt melt inclusions in minerals provide important clues to characterization of mineral-forming processes. The analysis of the fluid inclusions often requires the exposure of the daughter minerals. Rinneite (K3NaFeCl6), which is a hygroscopic mineral, decomposes in air and cannot thus be identified by conventional methods. A combined approach has been applied for investigation of synthetic and natural rinneite to acquire its diagnostic Raman spectrum for a nondestructive identification. We used natural rinneite inclusions in halite, suitable for applying a complex of methods, to clear up the reference spectrum. Improved high-resolution X-ray diffraction (XRD) data obtained from natural rinneite inclusion are comparable with that of previously published, with similar unit cell dimensions. Polarized Raman spectra of natural inclusions were obtained using different geometries and polarization of the incident and scattered light. Interpretation of experimental Raman spectra was performed within the framework of lattice dynamics simulations and group analysis. Individual spectral bands are interpreted in terms of Raman-active vibrational modes of K(3)NaFeCl(6)structural units. Raman spectrum of synthetic rinneite with main peaks at 75, 91, 103, 143, 167, 171, 187, and 239 cm(-1)agrees well with the spectra of rinneite inclusions in halite from the Nepa potash deposit and rinneite daughter minerals in salt melt inclusions hosted by quartz veinlets from the porphyry gold systems in the Central Slovakia Volcanic Field. This provides a firm basis for any future identification of this mineral worldwide, using nondestructive Raman spectroscopy.

Журнал: JOURNAL OF RAMAN SPECTROSCOPY

Выпуск журнала: Vol. 51, Is. 12

Номера страниц: 2505-2516

ISSN журнала: 03770486

Место издания: HOBOKEN

Издатель: WILEY

• Grishina Svetlana (Russian Acad Sci, Sobolev Inst Geol & Mineral, Dept Mineral, Siberian Branch, Novosibirsk, Russia)
• Kodera Peter (Comenius Univ, Dept Econ Geol, Fac Nat Sci, Bratislava, Slovakia)
• Goryainov Sergey (Russian Acad Sci, Sobolev Inst Geol & Mineral, Dept Mineral, Siberian Branch, Novosibirsk, Russia)
• Oreshonkov Aleksandr (Kirensky Inst Phys, Mol Spect Lab, Krasnoyarsk, Russia; Siberian Fed Univ, Inst Engn Phys & Radio Elect, Krasnoyarsk, Russia)
• Seryotkin Yurii (Russian Acad Sci, Sobolev Inst Geol & Mineral, Dept Mineral, Siberian Branch, Novosibirsk, Russia; Novosibirsk State Univ, Dept Geol, Novosibirsk, Russia)
• Simko Frantisek (Slovak Acad Sci, Inst Inorgan Chem, Bratislava, Slovakia)
• Polozov Alexander G. (Russian Acad Sci, Inst Geol Ore Deposits Petrog Mineral & Geochem, Moscow, Russia)

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