Distribution of rare earth elements among rock-forming and accessory minerals: A case study of Variscan granites from the Krušné Hory Mts., Czech Republic

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F24%3A00587291" target="_blank" >RIV/67985831:_____/24:00587291 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.geologicacarpathica.com/browse-journal/volumes/75-2/article-1061/" target="_blank" >http://www.geologicacarpathica.com/browse-journal/volumes/75-2/article-1061/</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.31577/GeolCarp.2024.07" target="_blank" >10.31577/GeolCarp.2024.07</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Distribution of rare earth elements among rock-forming and accessory minerals: A case study of Variscan granites from the Krušné Hory Mts., Czech Republic

Popis výsledku v původním jazyce

Eight granite samples representing the main petrographic and geochemical types of Variscan granites from the Krušné Hory/Erzgebirge area were studied to decipher the distribution of rare-earth-elements (REE) among all rock-forming, minor, and accessory minerals. The chemical composition (REE contents) of minerals was determined using electron microprobe and laser ablation ICP MS, while the quantitative abundance of individual minerals was determined by automated mineralogy (TIMA technology). Monazite and xenotime + zircon are dominant hosts of both LREE and HREE respectively, especially in strongly peraluminous S-type granites. In less-fractionated Ca-richer facies, allanite is also an important carrier of LREE. In slightly peraluminous A-type granites, monazite + fluorite (including its alteration products) dominates as LREE hosts, while fluorite (including its alteration products), with small contributions of zircon and xenotime, hosts the HREE. The importance of rock-forming silicates for REE distribution is limited, the relatively highest contribution was found in plagioclase (up to approx. 15 % of LREE in S-type granites).

Název v anglickém jazyce

Distribution of rare earth elements among rock-forming and accessory minerals: A case study of Variscan granites from the Krušné Hory Mts., Czech Republic

Popis výsledku anglicky

Eight granite samples representing the main petrographic and geochemical types of Variscan granites from the Krušné Hory/Erzgebirge area were studied to decipher the distribution of rare-earth-elements (REE) among all rock-forming, minor, and accessory minerals. The chemical composition (REE contents) of minerals was determined using electron microprobe and laser ablation ICP MS, while the quantitative abundance of individual minerals was determined by automated mineralogy (TIMA technology). Monazite and xenotime + zircon are dominant hosts of both LREE and HREE respectively, especially in strongly peraluminous S-type granites. In less-fractionated Ca-richer facies, allanite is also an important carrier of LREE. In slightly peraluminous A-type granites, monazite + fluorite (including its alteration products) dominates as LREE hosts, while fluorite (including its alteration products), with small contributions of zircon and xenotime, hosts the HREE. The importance of rock-forming silicates for REE distribution is limited, the relatively highest contribution was found in plagioclase (up to approx. 15 % of LREE in S-type granites).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10504 - Mineralogy

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

Geologica Carpathica

ISSN

1335-0552

e-ISSN

1336-8052

Svazek periodika

75

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

SK - Slovenská republika

Počet stran výsledku

15

Strana od-do

83-97

Kód UT WoS článku

001268151600001

EID výsledku v databázi Scopus

2-s2.0-85198046550