Podrobnosti záznamu

Název
    Synchysite-(Y)-synchysite-(Ce) solid solutions form Markersbach, Erzgebirge, Germany: REE and Th mobility during high-T alteration of highly fractionated aluminous A-type granites
Údaj o odpovědnosti
    Hans-Jürgen Förster
Autor
    Förster, Hans-Jürgen, 1948-
Jazyk
    anglicky
Zdrojový dokument - seriál
    Mineralogy and petrology
Svazek/č.
    Vol. 72, no. 4
Strany
    p. 259-280
Rok
    2001
Poznámky
    1 obr., 4 diagr., 3 tab., 5 s.bibl.
    il.
    Zkr. název ser.: Mineral. and Petrology
Předmětová skupina
    chemismus minerálů
    granit typu A
    hydrotermální alterace
    karbonáty
    krušnohorský pluton
    minerály akcesorické
    mobilita
    roztok pevný
    thorium
    vzácné zeminy
Geografické jméno
    Cínovec (Teplice)
    ČR-Čechy
    SRN-Sachsen
Klíčové slovo
    A-type
    Alteration
    Aluminous
    During
    Erzgebirge
    Form
    Fractionated
    Germany
    Granites
    High-T
    Highly
    Markersbach
    Mobility
    REE
    Solid
    Solutions
    Synchysite-(Y)-synchysite-(Ce
    Th
Abstrakt (anglicky)
   The Ca, REE-fluorocarbonate synchysite, which forms anhedral grains hosted in albite, was indentified in the Markersbach pluton (Erzgebirge, Germany) composed of F-rich, highly fractionated and autometasomatically altered granites. These granites were emplaced in a post-collisional setting and are of aluminous A-type affinity. The grains were identified by electron microprobe analysis as intermediate members of the probably complete solid-solution series between synchysite-(Y) and synchysite-(Ce). The rare earth elements likely were liberated upon complete destruction of magmatic monazite and xenotime during interaction with a F-CO2-Ca-bearing, late-magmatic fluid at relatively high temperatures. The geochemical patterns of different granite samples from Markersbach indicate that the REE and Th were not trapped immediately at the site of their release but mobilized over distances of at least decimenters.
   During transport of the element in the fluid, presumably as fluorite (HREE) and chloride (LREE) complexes, no significant fractionation took place among the REE
Přispěvatel
    Česká geologická služba
Kód přispěvatele
    ČGS (UNM)
Zdrojový formát
    U
Datum vložení
    29. 1. 2008
Datum importu
    8. 8. 2012