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E. Koiman
E. Koiman
Ph.D.
Senior Researcher, Head of the Vegacenter
Department of Geosciences, the Vegacenter, Swedish Museum of Natural History
Senior Researcher, Head of the Vegacenter, Ph.D.
Department of Geosciences, the Vegacenter, Swedish Museum of Natural History
Stockholm
Sweden

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Articles

Article
Geology
  • Date submitted
    2018-03-12
  • Date accepted
    2018-05-05

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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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 °С, 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.

How to cite: Skublov S.G., Krasotkina A.O., Makeev A.B., Rizvanova N.G., Koiman E. The first data on the U-Pb age (TIMS AND LA-ICP-MS) of rutile from the Ichetju polymineral occurrence, the Middle Timan // Journal of Mining Institute. 2018. Vol. 232. p. 357-363. DOI: 10.31897/PMI.2018.4.357