Record details

Title
    Geochemical comparison between topaz-bearing granites of the Central and Western Krušné Hory Mts.
Statement of responsibility
    Miloš René
Other titles
    Srovnání chemického složení topazových granitů v západní a střední části Krušných hor
Author
    René, Miloš
Language
    anglicky
Source title - serial
    Acta montana. Series A: Geodynamics
Vol./nr.
    No. 21
Pages
    p. 111-126
Year
    125
Notes
    10 obr., 2 tab., 4 s. bibl.
    il.
    Zkr. název ser.: Acta montana
Subject group
    chemismus hornin
    fluor
    fosfor
    granit
    intruze
    krušnohorský pluton
    složení peraluminické
    topaz
    vzácné zeminy
Geographical name
    ČR-Čechy
    Krušné hory
    SRN-Sachsen
Keyword
    Central
    Comparison
    Geochemical
    Granites
    Hory
    Krušné
    Mts
    Topaz-bearing
    Western
Abstract (in english)
   omparative approach concerning highly fractionated, fluorine- and phosphorus-rich granites from both the Central and Western Erzgebirge plutons (Saxony) and a solitary granite stock at Podlesí (Czech Republic) has shown remarkable similarities in (i) elevated P2O5 content (0.4 per cent P2O5), (ii) enrichment in incompatible elements such as Li, Rb, Cs, Nb, Ta and W, (iii) low contents of Ba and Sr. The interaction of post-magmatic, F-rich fluids with cooling granite melt is marked by the presence of "lanthanide tetrad effect", quantified by the value of the first and the third tetrad (TE1,3), that is the highest at the Ehrenfriedersdorf deposit. With the exception of the residual albite-rich granite from the Geyer stock, these granites are indicated by a negative Eu anomaly (Eu/Eu* = 0.008-0.6), relatively lower LaN/YbN ratio and elevated Y/Ho ratio.
   The Th/U ratio is relatively low in granites from Ehrenfriedersdorf (0.21), Geyer (0.53) and Podlesi (0.30) in contrast to those from the Greifenstein stock (1.15-2.07) and the Eibenstock granite massif (0.6-1.0)
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    28. 3. 2008
Import date
    8. 8. 2012