Main Colouring Minerals in the ‘Poznań Clays’: Case Studies from the Upper Neogene in the Polish Lowlands

  • Jakub Klęsk Institute of Geology, Adam Mickiewicz University, Krygowskiego 12, 61-680 Poznań, Poland https://orcid.org/0000-0001-7437-1232
  • Artur Błachowski Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland
  • Łukasz Kruszewsk Institute of Geological Sciences, Polish Academy of Sciences, Twarda 51/55, 00-818 Warszawa, Poland
  • Michał Kubiak Institute of Geology, Adam Mickiewicz University, Krygowskiego 12, 61-680 Poznań, Poland
  • Marek Widera Institute of Geology, Adam Mickiewicz University, Krygowskiego 12, 61-680 Poznań, Poland https://orcid.org/0000-0001-5092-2845
Keywords: case, colouring minerals, neogene, polish lowlands

Abstract

This article is devoted exclusively to three iron minerals that have a decisive influence on the colour of the ‘Poznań Clays’. These are hematite, goethite, and jarosite. Their presence gives the ‘Poznań Clays’, which are the most common and best known Neogene lithostratigraphic unit in the Polish Lowlands, characteristic ‘warm’ colours ranging from yellow through orange to dark red. The presented results were mainly obtained using powder X-ray diffraction and 57Fe Mössbauer spectroscopy.

Published
2024-06-22
How to Cite
Klęsk, J., Błachowski, A., Kruszewsk, Łukasz, Kubiak, M., & Widera, M. (2024). Main Colouring Minerals in the ‘Poznań Clays’: Case Studies from the Upper Neogene in the Polish Lowlands. Test, 1(1), 145–152. https://doi.org/10.29227/IM-2024-01-17