×

Carpathian Journal of Earth and Environmental Sciences

An International Peer-Reviewed Open Access Journal

Indexed in Scopus SCIE (Web of Science) Crossref GeoRef
Home » Past Issues » Volume 13, 2018 - Number 2 » FOSSILIZED BIOMATS AS THE POSSIBLE SOURCE OF HIGH NATURAL RADIONUCLIDE CONTENT AT THE JURASSIC ÚRKÚT MANGANESE ORE DEPOSIT, HUNGARY, Carpathian Journal of Earth and Environmental Sciences, August 2018, Vol. 13, No. 2, p. 477 - 487; DOI:10.26471/cjees/2018/013/041

« Back

ARTICLE IN » Volume 13, 2018 - Number 2

FOSSILIZED BIOMATS AS THE POSSIBLE SOURCE OF HIGH NATURAL RADIONUCLIDE CONTENT AT THE JURASSIC ÚRKÚT MANGANESE ORE DEPOSIT, HUNGARY



Ildikó GYOLLAI1, Márta POLGÁRI1,2*, Lóránt BÍRÓ1, Tamás VIGH3, Tibor KOVÁCS4 & Elemér PÁL-MOLNÁR5
1Research Centre for Astronomy and Geosciences, Geobiomineralization and Astrobiological Research Group, Institute for Geological and Geochemical Research, Hungarian Academy of Sciences, 1112 Budapest, Budaörsi str. 45, Hungary, e-mail: rodokrozit@gmail.com, gyildi@gmail.com
2Eszterházy Károly University, Department of Natural Geography and Geoinformatics, 3300 Eger, Leányka str. 6/C, Hungary
3Mangán Ltd, Úrkút, Külterület 1. 8409 Hungary, e-mail: drvightamas@gmail.com
4Institute of Radiochemistry and Radioecology, University of Pannonia, Egyetem str. 10, Veszprém, H-8200, Hungary, Phone: +36 88 624-789, Fax: +36 88 624-178, e-mail: kt@almos.uni-pannon.hu
5Szeged University, Department of Mineralogy, Geochemistry and Petrology ‘Vulcano’ Petrology and Geochemistry Research Group, 6722 Szeged, Egyetem str. 2, Hungary, e-mail: palm@geo.u-szeged.hu, *corresponding author


Reading time: | words
Download PDF document Downloads: 3434 1 citation(s) in Scopus

Abstract

DOI: 10.26471/cjees/2018/013/041

The 220Rn and 222Rn concentration in the Úrkút Manganese Formation is anomalously high, and it causes health risk for the attendants of the Úrkút Manganese Mine. In this study we suggest a new model for the high ratio of different natural radionuclides by the new genetic model of the Úrkút Manganese Formation. Fossilized Fe-rich biomats were found in the whole section of the deposit. Based on these, the formation of different types of Mn-ores by one or two step microbial mediation can be assumed. The biomats represent large amounts of organic matter offering large surfaces with negative ligands, as well as poorly ordered mineral phases like ferrihydrite and clay minerals with large and reactive surfaces. These features offer high capability of cation binding, among them ions of radioactive elements, which could be fixed on the active or inactive organic matter, as well as on mineral surfaces. The decay of fixed nuclides could result high 220Rn and 222Rn concentration in the Úrkút Mine.

Keywords:
  • biomats
  • black
  • shale
  • geomicrobiology
  • radon
  • natural
  • radionuclide

Disclaimer/Publisher’s Note: The statements, opinions and data contained in all publications are solely those of the individual author(s) and contributor(s) and not of CJEES and/or the editor(s). CJEES and/or the editor(s) disclaim responsibility for any injury to people or property resulting from any ideas, methods, instructions or products referred to in the content.

© 2018 by the author(s). Licensee CJEES, Carpathian Association of Environment and Earth Sciences. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

How to cite

Ildikó GYOLLAI, Márta POLGÁRI, Lóránt BÍRÓ, Tamás VIGH, Tibor KOVÁCS & Elemér PÁL-MOLNÁR (2018). FOSSILIZED BIOMATS AS THE POSSIBLE SOURCE OF HIGH NATURAL RADIONUCLIDE CONTENT AT THE JURASSIC ÚRKÚT MANGANESE ORE DEPOSIT, HUNGARY, Carpathian Journal of Earth and Environmental Sciences, August 2018, Vol. 13, No. 2, p. 477 - 487; https://doi.org/10.26471/cjees/2018/013/041

Google ScholarCrossRef

Checking for open citations...