Record details

Title
    Weathering of mine wastes after historical silver mining in the Jáchymov ore district (Czech Republic) and migration of uranium
Statement of responsibility
    Daniela Pittauerová, Viktor Goliáš
Author
    Goliáš, Viktor
    Pittauerová, Daniela
Language
    anglicky
Source title - monograph
    Uranium deposits : from their genesis to their environmental aspects : proceedings of the International Workshop organized by the Czech Group of the IAGOD, September 10-11, 2002
Pages
    s. 157-160
Notes
    4 obr., 2 fot.
    il.
    Obsahuje bibliografické odkazy
Classfication no.
    504.05
    553.3/.4
    622.3
Conspectus category
    504
    622
Subject group
    gama-spektroskopie
    historie
    krušnohorské krystalinikum
    minerály uranu
    odpady úpravnické
    radioaktivní prach
    rizika geologická
    rudy Ag
    těžba
Geographical name
    ČR-Čechy
    Jáchymov (Karlovy Vary, Ostrov)
Keyword
    After
    Czech
    District
    Historical
    Jáchymov
    Migration
    Mine
    Mining
    Ore
    Republic
    Silver
    Uranium
    Wastes
    Weathering
Abstract (in english)
   Weathering of 450 years old mine wastes after silver minings ar geister vein in the Jáchymov ore district (Czech Republic) and migration of uranium were studied. Specific gamma-ray activity of 226Ra, measured by field gamma-ray spectrometry, varies from Bq/kg (3 ppm eU) to 3816 Bq/kg (309 ppm eU) in the observed area. The most active material forms the top layer of the dump. The gamma-ray activity of the top layer is caused mainly by 226Ra. Uranium is leached from upper layer and accumulated in fossil soils beneath. U-micas were studied using X-ray powder diffraction and EDA. The following succession of supergene alteration was found: autunite-meta-autunite-bassetite-oxidized bassetite
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    4. 12. 2006
Import date
    8. 8. 2012