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E. Koiman
E. Koiman
Department of Geosciences, the Vegacenter, Swedish Museum of Natural History
Department of Geosciences, the Vegacenter, Swedish Museum of Natural History

Articles

Geology
  • Date submitted
    2018-03-12
  • Date accepted
    2018-05-05
  • Date published
    2018-08-26

THE FIRST DATA ON THE U-PB AGE (TIMS AND LA-ICP-MS) OF RUTILE FROM THE ICHETJU POLYMINERAL OCCURRENCE, THE MIDDLE TIMAN

Article preview

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. DOI: 10.31897/PMI.2018.4.357