Allanite from granitic rocks of the Moldanubian batholith (Central European Variscan Belt)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F20%3A00531099" target="_blank" >RIV/67985891:_____/20:00531099 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.intechopen.com/books/rare-earth-elements-and-their-minerals/allanite-from-granitic-rocks-of-the-moldanubian-batholith-central-european-variscan-belt-" target="_blank" >https://www.intechopen.com/books/rare-earth-elements-and-their-minerals/allanite-from-granitic-rocks-of-the-moldanubian-batholith-central-european-variscan-belt-</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5772/intechopen.86356" target="_blank" >10.5772/intechopen.86356</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Allanite from granitic rocks of the Moldanubian batholith (Central European Variscan Belt)

Popis výsledku v původním jazyce

Allanite occurs as a relative rare REE mineral in selected granitic rocks of the Moldanubian batholith. This batholith represents one of the largest plutonic bodies in the European Variscan belt. Allanite was found in the Schlieren biotite granites and diorites 1 of the oldest Weinsberg suite, in biotite granodiorites of the youngest Freistadt suite and in dykes of microgranodiorites occurred in the eastern margin of the Klenov pluton. A majority of analyzed allanites are without any magmatic zoning, only allanite grains from the diorites 1 display complicated internal zoning with variable concentrations of Fe, Ca, Th, and REE. Analyzed allanites from the Schlieren granite, diorite 1, and the “margin” variety of the Freistadt granodiorite display ferriallanite-allanite substitution with low Feox = (Fe3+/(Fe3+ + Fe2+)) ratio (0.2–0.5). The analyzed allanites occurring in the microgranodiorites display slightly greater Feox = (Fe3+/(Fe3 + Fe2+)) ratios (0.45–0.6) and enrichment in Al (up to 2.2 apfu). All analyzed allanites are Mn-poor with its concentrations from 0.01 to 0.04 apfu. The Ce is a predominant rare earth element in all analyzed allanite grains, they are thus identified as allanite-(Ce). The highest concentrations of Ce were found in allanites from diorite 1 (0.31–0.41 apfu).

Název v anglickém jazyce

Allanite from granitic rocks of the Moldanubian batholith (Central European Variscan Belt)

Popis výsledku anglicky

Allanite occurs as a relative rare REE mineral in selected granitic rocks of the Moldanubian batholith. This batholith represents one of the largest plutonic bodies in the European Variscan belt. Allanite was found in the Schlieren biotite granites and diorites 1 of the oldest Weinsberg suite, in biotite granodiorites of the youngest Freistadt suite and in dykes of microgranodiorites occurred in the eastern margin of the Klenov pluton. A majority of analyzed allanites are without any magmatic zoning, only allanite grains from the diorites 1 display complicated internal zoning with variable concentrations of Fe, Ca, Th, and REE. Analyzed allanites from the Schlieren granite, diorite 1, and the “margin” variety of the Freistadt granodiorite display ferriallanite-allanite substitution with low Feox = (Fe3+/(Fe3+ + Fe2+)) ratio (0.2–0.5). The analyzed allanites occurring in the microgranodiorites display slightly greater Feox = (Fe3+/(Fe3 + Fe2+)) ratios (0.45–0.6) and enrichment in Al (up to 2.2 apfu). All analyzed allanites are Mn-poor with its concentrations from 0.01 to 0.04 apfu. The Ce is a predominant rare earth element in all analyzed allanite grains, they are thus identified as allanite-(Ce). The highest concentrations of Ce were found in allanites from diorite 1 (0.31–0.41 apfu).

Druh

C - Kapitola v odborné knize

CEP obor

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OECD FORD obor

10504 - Mineralogy

Projekt

<a href="/cs/project/ME10083" target="_blank" >ME10083: Geochemie a petrologie dvoslídných granitů jihozápadní části moldanubického batolitu.</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název knihy nebo sborníku

Rare Earth Elements and Their Minerals

ISBN

978-1-78984-740-6

Počet stran výsledku

10

Strana od-do

21-30

Počet stran knihy

88

Název nakladatele

IntechOpen

Místo vydání

London

Kód UT WoS kapitoly

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