Three-dimensional mineral dendrites reveal a nonclassical crystallization pathway
- Autor(en)
- Zhaoliang Hou, Dawid Woś, Cornelius Tschegg, Anna Rogowitz, A. Hugh N. Rice, Lutz Nasdala, Florian Fusseis, Piotr Szymczak, Bernhard Grasemann
- Abstrakt
Manganese (Mn) dendrites are a common type of mineral dendrite that typically forms two-dimensional structures on rock surfaces. Three-dimensional (3-D) Mn dendrites in rocks have rarely been reported, and so their growth implications have largely escaped attention. Here, we combined high-resolution X-ray and electron-based data with numerical modeling to give the first detailed description of natural 3-D Mn dendrites (in clinoptilolite tuffs) and elucidate their growth dynamics. Our data show that 3-D dendrite growth occurred by accretion of Mn-oxide nanoparticles formed when Mn-bearing fluids mixed with oxygenated pore water. The geometry of the resulting structures is sensitive to ion concentrations, the volume of infiltrating fluid, and the number of fluid pulses; thus, 3-D dendrites record the hydrogeochemical rock history.
- Organisation(en)
- Institut für Geologie, Institut für Mineralogie und Kristallographie
- Externe Organisation(en)
- University of Warsaw, Glock Health, Science and Research GmbH, Karl-Franzens-Universität Graz, University of Edinburgh
- Journal
- Geology
- Band
- 51
- Seiten
- 626-630
- Anzahl der Seiten
- 5
- ISSN
- 0091-7613
- DOI
- https://doi.org/10.1130/G51127.1
- Publikationsdatum
- 2023
- Peer-reviewed
- Ja
- ÖFOS 2012
- 104026 Spektroskopie, 105116 Mineralogie, 105101 Allgemeine Geologie
- Schlagwörter
- ASJC Scopus Sachgebiete
- Geology
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/b40a250b-f4c4-46fd-a1eb-fe39943a81db