Podrobnosti záznamu

Název
    The Rozna uranium deposit (Bohemian Massif, Czech Republic): shear zone-hosted, late Variscan and post-Variscan hydrothermal mineralization
Autor
    Dobeš, Petr
    Křibek, Bohdan
    Leichmann, Jaromír
    Pudilová, Marta
    René, Miloš
    Žák, Karel
Jazyk
    anglicky
Typ dokumentu
    článek v periodiku
Zdrojový dokument - seriál
    Mineralium Deposita
Svazek/č.
    Roč. 44, č. 1
Strany
    29
Rok
    2009
Výraz tezauru
    Bohemian Massif
    Czech Republic
    Rozna
    Uranium
Klíčové slovo
    Bohemian
    Czech
    Deposit
    Hydrothermal
    Late
    Massif
    Mineralization
    Post-Variscan
    Republic
    Rozna
    Shear
    Uranium
    Variscan
    Zone-hosted
Abstrakt (anglicky)
   Three major mineralization events are recorded at the Ro angstrom 3/4na uranium deposit (total mine production of 23,000 t U, average grade of 0.24% U): (1) pre-uranium quartz-sulfide and carbonate-sulfide mineralization, (2) uranium, and (3) post-uranium quartz-carbonate-sulfide mineralization. (1) K-Ar ages for white mica from wall rock alteration of the pre-uranium mineralization style range from 304.5 +/- 5.8 to 307.6 +/- 6.0 Ma coinciding with the post-orogenic exhumation of the Moldanubian orogenic root and retrograde-metamorphic equilibration of the high-grade metamorphic host rocks. The fluid inclusion record consists of low-salinity aqueous inclusions, together with H2O-CO2-CH4, CO2-CH4, and pure CH4 inclusions. The fluid inclusion, paragenetic, and isotope data suggest that the pre-uranium mineralization formed from a reduced low-salinity aqueous fluid at temperatures close to 300A degrees C. (2) The uraniferous hydrothermal event is subdivided into the pre-ore, ore, and post
   -ore substages.
Přispěvatel
    MU Brno, Přírodovědecká fakulta
Kód přispěvatele
    MU, PřF
Zdrojový formát
    R
Datum importu
    8. 8. 2012