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

Result code in 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>
Result on the web
—
DOI - Digital Object Identifier
—

Result language
angličtina
Original language name
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
Original language description
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>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>Ti>Fe>U>As) from the first assemblage, as well as phases B (U similar to Nb>Ti>As>P>Fe) and C (U>Nb>As>Fe>Ti) from the second assemblage.
Czech name
—
Czech description
—

Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DB - Geology and mineralogy
OECD FORD branch
—

Project
<a href="/en/project/KJB301630801" target="_blank" >KJB301630801: The interaction of metamict minerals and hydrothermal fluids and its significance in the geological environment</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)