Significance of Baddeleyite for Paleoproterozoic PGE Deposits with Pt-Pd and Cu-Ni reefs (North-Eastern Fennoscandian Shield): New Results of U-Pb and LA-ICP-MS Studies

Tamara Bayanova; Drogobuzhskaya S.V.; Subbotin V.V.; Serov P.А.; Steshenko Е.N.; Kunakkuzin Е.L.

Authors

Tamara Bayanova
Drogobuzhskaya S.V.
Subbotin V.V.
Serov P.А.
Steshenko Е.N.
Kunakkuzin Е.L.

Keywords:

baddeleyite; layered intrusions; U-Pb analysis; laser ablation inductively coupled

Abstract

Baddeleyite is a significant mineral successfully applied in the U-Pb geochronology for the precise dating of mafic rocks from layered intrusions with the platinum group element (PGE) and Cu-Ni mineralization. The Fennoscandian Shield hosts several layered Pt-Pd, Co-Cr-Ni, and Ti-V occurrences in the Northern (Karelian) and Southern (Karelian-Finnish) belts. The aim of this study is to estimate the content and distribution of rare earth elements (REE) in baddeleyite and to calculate temperatures (Т,˚С) of the U-Pb system closure and baddeleyite crystallization compared to zircon from Cu-Ni and Pt-Pd deposits in the north-eastern Fennoscandian Shield. For the first time, baddeleyite crystals from Cu-Ni (Monchepluton) and Pt-Pd (Monchetundra) reefs of the Monchegorsk ore area have been studied in situ by the laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) to measure the U-Pb age of formation and the REE content.

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Significance of Baddeleyite for Paleoproterozoic PGE Deposits with Pt-Pd and Cu-Ni reefs (North-Eastern Fennoscandian Shield): New Results of U-Pb and LA-ICP-MS Studies. (2020). Global Journal of Human-Social Science, 20(B3), 1-7. https://socialscienceresearch.org/index.php/GJHSS/article/view/3265

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