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Browsing by Subject "ore mineralization on mining dumps"

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    Item type:Thesis, Access status: Restricted ,
    Mineralizacja kruszcowa występująca na hałdach po dawnym kopalnictwie żelaza i uranu w Kowarach i jej wpływ na środowisko naturalne
    (Data obrony: 2010-09-30) Jerzykowska, Irena
    Wydział Geologii, Geofizyki i Ochrony Środowiska
    The aim of the study was to describe ore mineralization on iron and uranium mining dumps in Kowary and to estimate its influence on the local environment. Rock samples from four dumps, water flowing from adits and soil samples formed on dumps were collected. Fourteen ore minerals were described during macroscopic and microscopic studies. Mineral spatial relations indicate formation of ore minerals in a few stages of hydrothermal and metasomatic processes and finally during weathering. The radiochemical analysis of water flowing from adits shows that radionuclide content exceeds standard requirements for drinking-water. High heavy metal content (e.g. As, Ba, Sn, Pb, U) was noticed in soil samples collected from dumps. The highest uranium concentration was observed in the most acidic soil sample, rich in organic matter. Neutral pH contribute the crystallization of secondary uranium phases (e.g. uranophane).