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Pseudorutile-leucoxene-quartz ores of Timan ‒ a new genetic type of titanium raw materials, prospects for industrial developmentстатья
Информация о цитировании статьи получена из
Scopus
Дата последнего поиска статьи во внешних источниках: 20 февраля 2024 г.
- Авторы: Makeyev A.B., Skublov S.G., Galankina O.L., Vasiliev E.A., Krasotkina A.O.
- Журнал: Georesources
- Том: 25
- Номер: 3
- Год издания: 2023
- Первая страница: 163
- Последняя страница: 174
- DOI: 10.18599/grs.2023.3.10
- Аннотация: Abstract. The two largest deposits of Russia –Yaregskoye and Pizhemskoye belong to the same genetictype; hydrothermal-metamorphic indigenous deposits. Theyare located in the same Timan structure at a distance of nomore than 230 km from each other. According to the totalapproved reserves and forecast resources of titanium dioxide,they are approaching 70% of the all-Russian and will form thebasis of industrial titanium raw materials used in Russia inthe near future. In the interests of technological mineralogy,morphological features, internal structure, chemicalcomposition of grains of the two main titanium mineralphases ‒ leucoxene and pseudorutile, TiO2 polymorphs, as wellas the composition of mineral microinclusions in these phaseshave been studied in detail. The compositions of all mineralphases in polished preparations of leucoxene and pseudorutilewere analyzed by SEM-EDS method at the Institute ofGeology and Geochronology of the Precambrian of the RAS,147 chemical analyses were obtained at the point (3 μk)and many images of polished grains of anatase, leucoxeneand pseudorutile were scanned over the area (20×20 μk).In the leucoxene grains themselves, 12 mineral phaseswere diagnosed and characterized in the form of inclusions:pseudorutile, rutile, anatase, quartz, hydromuscovite-illite,kaolinite, siderite, zircon, xenotime, pyrite, florencite,monazite and kularite. TiO2 polymorphs are verified byRaman spectroscopy and X-ray diffraction analysis. Newevidence has been obtained that the transformation of ilmeniteinto leucoxene occurs hydrothermally through intermediatephases ‒ Fe-rutile and pseudorutile; the enlargement of rutilecrystals in the leucoxene grain itself is shown; the presenceof secondary crystals of siderite, florencite and others insidethe studied grains.
- Добавил в систему: Макеев Александр Борисович