Large-scale HFSE and REE mobility linked to the formation of vein-type U-deposits in the Moldanubian Zone of the Bohemian Massif

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F23%3A00132128" target="_blank" >RIV/00216224:14310/23:00132128 - isvavai.cz</a>

Alternative codes found

RIV/00025798:_____/23:10168859

Result on the web

<a href="https://e-sga.org/nc/publications/sga-biennial-meetings-abstract-volumes/2023-zurich/" target="_blank" >https://e-sga.org/nc/publications/sga-biennial-meetings-abstract-volumes/2023-zurich/</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Large-scale HFSE and REE mobility linked to the formation of vein-type U-deposits in the Moldanubian Zone of the Bohemian Massif

Original language description

Multi-element EMP maps and analyses of major accessory phases and their possible alteration products from ultrapotassic rocks (durbachites), in combination with LA-ICP-MS analyses of hydrothermal U-mineralization, provided constraints on potential U source of vein-type U-deposits in the Moldanubian Zone of the Bohemian Massif. The extensive metal mobilization in durbachites, recorded by EMP imaging, was controlled by self-induced radiation damage (metamictization) and subsequent fluid-driven alteration of U-bearing phases (thorite, allanite, zircon). Unusual trace element signatures of low-T hydrothermal Umineralization (e.g., extremely high Zr, Nb, Ti, ΣREE) from the vein-type deposits reflect the large-scale HFSE and REE mobility via aqueous solutions. The character of late alteration of primary phases (zircon dissolution vs. resistance of apatite) and mineral assemblages of hydrothermal phases in durbachites (e.g., synchisite, Frich titanite, monazite) indicates the importance of alkali-, F-, and P-rich fluids in the formation of U-deposits. The infiltration of oxidized, highly alkaline basinal brines likely played a key role in HFSE and REE mobility during the Permian hydrothermal event, as suggested by EMP chemical dating of U-mineralization.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

10505 - Geology

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Mineral Resources in a Changing World, 17th SGA Biennial Meeting 2023, Volume 3

ISBN

9782839940443

ISSN

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e-ISSN

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Number of pages

4

Pages from-to

327-330

Publisher name

Society for Geology Applied to Mineral Deposits (SGA)

Place of publication

Zurich

Event location

ETH Zurich

Event date

Aug 28, 2023

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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