Uranium-Bearing Srilankite from High-Pressure Garnetites of the Southern Urals: First Data

This work presents the results of studying srilankite, a rare zirconium titanate (ZrTi 2 O 6 ), associated with ilmenite, rutile, zircon, uraninite, and other minerals discovered in high-pressure garnetites of the lherzolite Mindyak massif (Southern Urals). Srilankite occurs as inclusions in ilmenit...

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Bibliographic Details
Published in:Doklady earth sciences 2018-04, Vol.479 (2), p.529-533
Main Authors: Gottman, I. A., Pushkarev, E. V., Khiller, V. V.
Format: Article
Language:English
Subjects:
Admixtures
Earth and Environmental Science
Earth science
Earth Sciences
Geochemistry
High pressure
Ilmenite
Isomorphism
Minerals
Morphology
Pressure
Rutile
Uranium
Uranium dioxide
Zircon
Zirconium
Zirconium titanates
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Summary:This work presents the results of studying srilankite, a rare zirconium titanate (ZrTi 2 O 6 ), associated with ilmenite, rutile, zircon, uraninite, and other minerals discovered in high-pressure garnetites of the lherzolite Mindyak massif (Southern Urals). Srilankite occurs as inclusions in ilmenite and rutile of up to several tens of microns in size. It was established for the first time that srilankite contains a significant UO 2 admixture (up to 20%). The negative correlation between Zr and U is evidence of isomorphism in the srilankite–brannerite system. The association of srilankite with high-Zr rutile indicates that formation of these minerals occurred at T > 850°С.
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X18040244