Uranium?niobium-rich alteration products after ?písekite?, an intimate mixture of Y, REE, Nb, Ta, Ti-oxide minerals from the Obrázek I pegmatite, Písek, Czech Republic

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F11%3A00049545" target="_blank" >RIV/00216224:14310/11:00049545 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Uranium?niobium-rich alteration products after ?písekite?, an intimate mixture of Y, REE, Nb, Ta, Ti-oxide minerals from the Obrázek I pegmatite, Písek, Czech Republic

Popis výsledku v původním jazyce

An improperly described association, further called "pisekite" aggregate, of fine-grained, mostly metamict U, Th-enriched Y, REE, Nb, Ta, Ti-oxide minerals from Obrazek I pegmatite, Pisek, forms an intimate mixture of polycrase-(Y), samarskite-(Y) and fergusonite-(Y). It underwent a low-temperature hydrothermal alteration the products of which are depleted in Y and REE&gt;U and significantly enriched in Si, As and P. Two distinct assemblages of secondary phases were recognized to be associated with "pisekite" aggregate, namely (i) that developed within the central parts of the aggregate and (ii) pocket assemblage in albite adjacent to it. Both assemblages are dominated by Fe-rich smectite. "Pisekite" aggregate is intensively replaced by U, Nb, Ti, Fe,As, P-rich phases of variable chemical composition: phase A (Nb&gt;Ti&gt;Fe&gt;U&gt;As) from the first assemblage, as well as phases B (U similar to Nb&gt;Ti&gt;As&gt;P&gt;Fe) and C (U&gt;Nb&gt;As&gt;Fe&gt;Ti) from the second assemblage.

Název v anglickém jazyce

Uranium?niobium-rich alteration products after ?písekite?, an intimate mixture of Y, REE, Nb, Ta, Ti-oxide minerals from the Obrázek I pegmatite, Písek, Czech Republic

Popis výsledku anglicky

An improperly described association, further called "pisekite" aggregate, of fine-grained, mostly metamict U, Th-enriched Y, REE, Nb, Ta, Ti-oxide minerals from Obrazek I pegmatite, Pisek, forms an intimate mixture of polycrase-(Y), samarskite-(Y) and fergusonite-(Y). It underwent a low-temperature hydrothermal alteration the products of which are depleted in Y and REE&gt;U and significantly enriched in Si, As and P. Two distinct assemblages of secondary phases were recognized to be associated with "pisekite" aggregate, namely (i) that developed within the central parts of the aggregate and (ii) pocket assemblage in albite adjacent to it. Both assemblages are dominated by Fe-rich smectite. "Pisekite" aggregate is intensively replaced by U, Nb, Ti, Fe,As, P-rich phases of variable chemical composition: phase A (Nb&gt;Ti&gt;Fe&gt;U&gt;As) from the first assemblage, as well as phases B (U similar to Nb&gt;Ti&gt;As&gt;P&gt;Fe) and C (U&gt;Nb&gt;As&gt;Fe&gt;Ti) from the second assemblage.

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/KJB301630801" target="_blank" >KJB301630801: Interakce metamiktních minerálů s hydrotermálnímy fluidy a její význam geologickém prostředí</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Journal of Geosciences

ISSN

1802-6222

e-ISSN

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Svazek periodika

56

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

9

Strana od-do

317-325

Kód UT WoS článku

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EID výsledku v databázi Scopus

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