Record details

    The effect of geochemical evolution of AMD on mineral composition of stream sediments: preliminary study on Hadůvka stream, West-ern Moravia, Czech Republic.
    Filip, Jan
    Zeman, Josef
Publication type
    článek ve sborníku
Source title - monograph
    Applied Environmental Geology in Central and Eastern Europe
    Akce: 2003 ; Wien
Thesaurus term
    acid mine drainage
    bottom sediment
    secondary minerals
Abstract (in english)
   Results from X-ray diffraction have showed that all recently formed minerals are amorphous, nearly amorphous (without regular crystal lattice) or cryptocrystalline and occur in mixture of several phases. Thus this method seems to be unsuitable for characterization of such fresh sediments. Modelling made with the aid of The Geochemists Workbench suggested hypo-thetical presence of goethite, pyrolusite, calcite and kaoline. Coupled with sequential and silicate analyses, this hypothetical minerals have been taken as normative for further evalua-tion of bottom sediments. Natural Hadůvka stream sediments are characterized by low con-tent of Fe- and Mn-oxyhydroxides (3 to 4 %) and carbonates (0.X %). Inflow of AMD into the stream causes rapid rising of insoluble HFO (20 to 30 %), carbonates (20 to 30 %) and clay minerals (5 to 10 %) content, but maximum of carbonates is slightly later than that of HFO.
    MU Brno, Přírodovědecká fakulta
Contributor code
    MU, PřF
Source format
Import date
    8. 8. 2012