Object's details: Iron-bearing phases affecting the colour of upper Neogene clayey sediments from Dymaczewo Stare, west-central Poland

Provider:Platforma Otwartych Czasopism Naukowych UAM

Description

Title:
Iron-bearing phases affecting the colour of upper Neogene clayey sediments from Dymaczewo Stare, west-central Poland
Creator:
Klęsk, Jakub;
Błachowski, Artur;
Diduszko, Ryszard;
Kruszewski, Łukasz;
Widera, Marek
Description:
The present paper investigates the colour dependence of mineral compositions in clay-rich sedimentary strata, mainly clayey silts, the emphasis being on iron-bearing minerals (rather than clay minerals) by using powder X-ray diffraction (PXRD) and 57Fe Mössbauer spectroscopy (57Fe-MS). The PXRD-based phase analysis has demonstrated the variable compositions of samples, consisting of, inter alia, quartz, calcite or gypsum, and admixtures of potassium feldspars and plagioclase. Hematite + goethite (sample D1, dark red), goethite (sample D2, pinkish brown), poorly crystalline goethite (sample D3, orange) and jarosite (sample D4, yellow) have been distinguished. A very low jarosite content was detected in sample D5 (light grey); this did not affect its colour. The potential yellow/brown shades in sample D6 (dark grey), coming from trace amounts of jarosite, are masked by macroscopically visible organic matter. In the case of the two last-named samples (D5 and D6), with trace amounts of Fe-bearing minerals, it is most likely that the organic matter was effective in influencing the light and dark grey colour of the sediment, respectively.
Object availability:
free access
Rights: https://creativecommons.org/licenses/by-nc-nd/3.0/ ;
Prawa autorskie (c) 2022 Jakub Klęsk, Artur Błachowski, Ryszard Diduszko, Łukasz Kruszewski, Marek Widera
Date:
2022.08.31
Type:
info:eu-repo/semantics/article;
info:eu-repo/semantics/publishedVersion;
Research papers
Language:
English
Source:
Geologos; Vol. 28 No. 2 (2022): ; 129-139;
Geologos; Tom 28 Nr 2 (2022): ; 129-139;
2080-6574;
1426-8981
Format:
application/pdf
Publisher:
Adam Mickiewicz University Poznan
Relation: http://pressto.amu.edu.pl/index.php/logos/article/view/35609/31821
Subject:
mineral composition;
powder X-ray diffraction (PXRD);
iron minerals;
57Fe Mössbauer spectroscopy (57Fe- MS);
Poznań Clays;
Mio-Pliocene
Identifier: http://pressto.amu.edu.pl/index.php/logos/article/view/35609
Data provider:
Platforma Otwartych Czasopism Naukowych UAM

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Object's details: Iron-bearing phases affecting the colour of upper Neogene clayey sediments from Dymaczewo Stare, west-central Poland

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