MINERALOGICAL-GEOCHEMICAL FEATURES OF ZIRCON FROM THE KUMIR GRANITIC STOCK, GORNY ALTAI
Data on U-Pb age and composition of zircon from the Kumir granitic stock (Gorny Altai) and related greisens are presented for the first time. The magmatic, metamictic and pneumatolytic-hydrothermal zircons exhibit specific changes in main and trace elements with an increasing content of the high-fie...
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| Format: | Article |
| Language: | English |
| Published: |
South Urals Federal Research Center of Mineralogy and Geoecology UB RAS
2022-06-01
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| Series: | Минералогия |
| Subjects: | |
| Online Access: | https://journal.mineralogy.ru/wp-content/uploads/2022/06/2022_8_2_4.pdf |
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| Summary: | Data on U-Pb age and composition of zircon from the Kumir granitic stock (Gorny Altai) and related greisens are presented for the first time. The magmatic, metamictic and pneumatolytic-hydrothermal zircons exhibit specific changes in main and trace elements with an increasing content of the high-field strength elemetns (U, Nb, Sc, REE) and decreasing Eu/Eu* and Ce/Ce* ratios. Depending on the composition and activity of volatiles in fluids and O fugacity, the REE contents and their ratios varied that is reflected on the tetrad effect of REE fractionation of М- and W- types. |
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| ISSN: | 2313-545X 2782-2044 |