Monazite and zircon as major carriers of Th, U, and Y in peraluminous granites: examples from the Bohemian Massif

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F16%3A00465674" target="_blank" >RIV/67985831:_____/16:00465674 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s00710-016-0448-0" target="_blank" >http://dx.doi.org/10.1007/s00710-016-0448-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00710-016-0448-0" target="_blank" >10.1007/s00710-016-0448-0</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Monazite and zircon as major carriers of Th, U, and Y in peraluminous granites: examples from the Bohemian Massif

Popis výsledku v původním jazyce

The chemical compositions of zircon and monazite and the relationships between the contents of Th, U, Y, and REE in both minerals and in the bulk samples of their parental rocks were studied in three Variscan composite peraluminous granite plutons in the Bohemian Massif. It was established that granites of similar bulk composition contain zircon and monazite of significantly different chemistry. Monazite typically contains 5–13 wt% (rarely up to 28 wt%) ThO2, 0.4–2 wt% (up to 8.2 wt%) UO2, and 0.5–2 wt% (up to 5 wt%) Y2O3, whereas zircon typically contains less than 0.1 wt% (rarely up to 1.7 wt%) ThO2, less than 1 wt% UO2 (in the Plechý/Plockenstein granite, commonly, 1–2 wt% and scarcely up to 4.8 wt% UO2), and less than 1 wt% Y2O3 (in the Nejdek pluton often 2–5, maximally 7 wt% Y2O3). Monazite is an essential carrier of thorium, hosting more than 80 % of Th in all studied granites. Monazite also appears to be an important carrier of Y (typically 14–16 %, and in the Melechov pluton, up to 81 % of the total rock content) and U (typically 18–35 % and occasionally 6–60 % of the total rock budget). The importance of zircon for the rock budget of all the investigated elements in granites is lower: 4–26 % U, 5–17 % Y, and less than 5 % Th.

Název v anglickém jazyce

Monazite and zircon as major carriers of Th, U, and Y in peraluminous granites: examples from the Bohemian Massif

Popis výsledku anglicky

The chemical compositions of zircon and monazite and the relationships between the contents of Th, U, Y, and REE in both minerals and in the bulk samples of their parental rocks were studied in three Variscan composite peraluminous granite plutons in the Bohemian Massif. It was established that granites of similar bulk composition contain zircon and monazite of significantly different chemistry. Monazite typically contains 5–13 wt% (rarely up to 28 wt%) ThO2, 0.4–2 wt% (up to 8.2 wt%) UO2, and 0.5–2 wt% (up to 5 wt%) Y2O3, whereas zircon typically contains less than 0.1 wt% (rarely up to 1.7 wt%) ThO2, less than 1 wt% UO2 (in the Plechý/Plockenstein granite, commonly, 1–2 wt% and scarcely up to 4.8 wt% UO2), and less than 1 wt% Y2O3 (in the Nejdek pluton often 2–5, maximally 7 wt% Y2O3). Monazite is an essential carrier of thorium, hosting more than 80 % of Th in all studied granites. Monazite also appears to be an important carrier of Y (typically 14–16 %, and in the Melechov pluton, up to 81 % of the total rock content) and U (typically 18–35 % and occasionally 6–60 % of the total rock budget). The importance of zircon for the rock budget of all the investigated elements in granites is lower: 4–26 % U, 5–17 % Y, and less than 5 % Th.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DB - Geologie a mineralogie

OECD FORD obor

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Projekt

<a href="/cs/project/GA14-13600S" target="_blank" >GA14-13600S: Otevřené procesy v granitoidech z pohledu zonality minerálů a horninových textur</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Mineralogy and Petrology

ISSN

0930-0708

e-ISSN

—

Svazek periodika

110

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

AT - Rakouská republika

Počet stran výsledku

19

Strana od-do

767-785

Kód UT WoS článku

000388834300005

EID výsledku v databázi Scopus

2-s2.0-84975137890