Y–REE-Rich zircons of the Timan region: Geochemistry and economic significance
- Authors: Makeyev A.B.1, Skublov S.G.2,3
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Affiliations:
- Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry
- Institute of Precambrian Geology and Geochronology
- Saint-Petersburg Mining University
- Issue: Vol 54, No 9 (2016)
- Pages: 788-794
- Section: Article
- URL: https://journals.rcsi.science/0016-7029/article/view/155281
- DOI: https://doi.org/10.1134/S0016702916080073
- ID: 155281
Cite item
Abstract
Mineralogical–geochemical studies of zircon from the Ichet’yu occurrence revealed unusually high Y and HREE contents (correlative with the P content) in the inner parts and zones of approximately 10% of the grains. They represent the intermediate members of the zircon–xenotime join with a heterovalent scheme of isomorphism Zr4+ + Si4+ → (Y + HREE)3+ + P5+. Geochronological and mineralogical–geochemical data suggest that the Middle Timan basement (the most probable source of zircon of the Ichet’yu occurrence) is made up of the Paleoproterozoic rocks and possibly represents a continuation beneath the Mezen syneclise and Middle Timan of the Paleoproterozoic collisional structure, to which the Arkhangelsk diamond province is confined.
Keywords
About the authors
A. B. Makeyev
Institute of Geology of Ore Deposits, Petrography, Mineralogy, and Geochemistry
Author for correspondence.
Email: abmakeev@mail.ru
Russian Federation, Staromonetnyi per. 35, Moscow, 119017
S. G. Skublov
Institute of Precambrian Geology and Geochronology; Saint-Petersburg Mining University
Email: abmakeev@mail.ru
Russian Federation, nab. Makarova 2, St. Petersburg, 199034; St. Petersburg, 199106
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