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The recent weathering of uraninite from the Červená vein, Jáchymov (Czech Republic): a fingerprint of the primary mineralization geochemistry onto the alteration association
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SYSNO ASEP 0434734 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název The recent weathering of uraninite from the Červená vein, Jáchymov (Czech Republic): a fingerprint of the primary mineralization geochemistry onto the alteration association Tvůrce(i) Plášil, Jakub (FZU-D) RID, ORCID
Sejkora, J. (CZ)
Škoda, R. (CZ)
Škácha, P. (CZ)Zdroj.dok. Journal of Geosciences. - : Česká geologická společnost - ISSN 1802-6222
Roč. 59, č. 3 (2014), s. 223-253Poč.str. 31 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova uraninite ; supergene weathering ; acid-mine drainage ; mineral data ; X-ray diffraction ; bond-valence approach Vědní obor RIV DB - Geologie a mineralogie CEP GP13-31276P GA ČR - Grantová agentura ČR Institucionální podpora FZU-D - RVO:68378271 UT WOS 000341694500004 EID SCOPUS 84904256941 DOI https://doi.org/10.3190/jgeosci.171 Anotace Uraninite and the supergene minerals from the Červená hydrothermal uranium vein (Jáchymov ore district, Czech Republic) were studied. These supergene minerals represent alteration products of the joint weathering of uraninite and hypogene sulfide minerals, connected to the acid-mine drainage systems. The weathering system is characterized by the high activity of Cu and REE, which control the composition of the resulting supergene minerals: commonly occurring are Cu-dominant uranyl sulfates of the zippeite group, Cu-dominant uranyl silicates or Y- and REE-containing uranyl-sulfates. The high ac tivity of Cu and REE is also reflected by the fact that both elements enter minerals, which are nominally Cu- or REE-free. The alteration association was evaluated using the bond-valence approach, documenting distinct evolutionary trends during weathering. Pracoviště Fyzikální ústav Kontakt Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Rok sběru 2015
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