Thorium mineralization in alkali feldspar syenite of the nordmarkite-type dyke in the Třevíč Pluton

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F01%3A00004956" target="_blank" >RIV/00216224:14310/01:00004956 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Thorium mineralization in alkali feldspar syenite of the nordmarkite-type dyke in the Třevíč Pluton
Original language description
The nordmarkite from Vaneč has been strongly ferruginised; ferruginization has caused only local changes to the minerals of U and Th, originally represented by thorite and minerals of the monazite group. The late magmatic to postmagmatic solutions locally dissolved the primary accessory minerals, especially monazite group minerals. The neoformation of (silico)phosphates and fluorocarbonates of REE was in places connected with fractionation within the LREE group: while all primary monazite was Ce-dominant, the secondary REE minerals are in places La-dominant. The fact that the bulk REE pattern does not differ from the REE patterns of durbachites seems to imply that the ferruginization, visibly affecting the the rock very strongly, did not led to extensive migration of REE or Th.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DB - Geology and mineralogy
OECD FORD branch
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Project
<a href="/en/project/GA205%2F99%2F0997" target="_blank" >GA205/99/0997: Radioactivity of accessory minerals of the Třebíč durbachite massif: petrological and environmental aspects</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2001
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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