Record details

    Radioactivity of the highly fractionated Homolka granite in the Moldanubian pluton, southern Bohemia
Statement of responsibility
    Karel Breiter, Ivan Gnojek
    Breiter, Karel, 1956-
    Gnojek, Ivan
Source title - serial
    Věstník Českého geologického ústavu (Bulletin of the Czech Geological Survey)
    Vol. 71, no. 2
    p. 173-176
    4 obr., 14 bibl.
    České resumé
    Zkr. název ser.: Věst. Čes. geol. Úst. (Bull. Czech geol. Surv.)
Subject group
    analýza hornin
    chemické vlastnosti
    K (draslík - 19)
    magnetická susceptibilita
    moldanubický pluton
    radioaktivní vlastnosti hornin
    Th (thorium - 90)
    U (uran - 92)
Subject category
    centrální masiv
    typ Homolka
Geographical name
Abstract (in english)
   The stock-shaped granite of Homolka, which occurs in the central part of the Moldanubian (South Bohemian) pluton in the district of Jindřichův Hradec, is a product of late and expressive magmatic differentiation. The medium-grained to coarse-grained albite-muscovite-topaz granite is rich in phosphorus, fluorine, lithium, rubudium, cesium, tin, niobium and tantalum. The ground gamma-ray spectrometry survey revealed the significant enrichment of uranium, from 8 to 20 ppm, accompagnied by a considerable decrease of thorium, the concentration of which is often less than 1 but never exceeding 3 ppm Th. Also the derived ratio-parameters such as U/Th, Th/K and U/K distinctly define the stock. The magnetic susceptibility of this granite is very low
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
Entered date
    26. 2. 2008
Import date
    8. 8. 2012