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The first data on the U-Pb age (TIMS and LA-ICP-MS) of rutile from the Ichetju polymineral occurrence, The Middle Timan
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2018 (English)In: Journal of Mining Institute, Vol. 232, p. 357-363Article in journal (Refereed) Published
Abstract [en]

A study on the U-Pb age of rutile from the Ichetju polymineral occurrence has been done for the first time by LA-ICP-MS and TIMS methods. It was established that rutile originates from various sources with different ages (presumably, ca. 1000, 1660, 1860 and 1980 Ma), but all the rutile types have undergone a common thermal event at ca. 580 Ma. Obtained results are consistent with U-Pb zircon data for the Ichetju occurrence and the Pizhemskoe deposit. According to modern concepts, the closure temperature for the U-Pb system in rutile is higher than 500 ะก, which suggests fairly high-temperature conditions of the rutile hydrothermal transformation during the formation of the deposits in Riphean. Obviously, a placer hypothesis of formation of titanium deposits of the Middle Timan which is supported by a number of researchers does not explain such temperature of rutile alteration.

Place, publisher, year, edition, pages
2018. Vol. 232, p. 357-363
National Category
Geochemistry Geology
Identifiers
URN: urn:nbn:se:nrm:diva-2983DOI: DOI: 10.31897/PMI.2018.4.357OAI: oai:DiVA.org:nrm-2983DiVA, id: diva2:1267075
Available from: 2018-11-30 Created: 2018-11-30 Last updated: 2018-11-30Bibliographically approved

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Publisher's full texthttp://pmi.spmi.ru/index.php/pmi/article/view/6964/8393

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