PhD Student Manolis Giampouras defended his thesis

PhD Student Manolis Giampouras defended his thesis

In continental settings, the interaction between meteoric water and ultramafic rocks generates waters of variable physicochemical characteristics due to serpentinization and weathering. The discharge of these waters forms aerial alkaline to hyperalkaline spring systems where waters mix, undergo evaporation, and take up atmospheric CO2, leading to the precipitation of carbonate minerals. The understanding of natural carbonation in these serpentinite-hosted alkaline environments is critical, among others, for assessing the role of this process in the global…

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Light-switchable anchors on magnetized biomorphic microcarriers

Light-switchable anchors on magnetized biomorphic microcarriers

Opel, J.; Rosenbaum, L.-C.; Brunner, J.; Staiger, A.; Zimmermanns, R.; Kellermeier, M.; Gaich, T.; Cölfen, H.; García-Ruiz, J.-M., Light-switchable anchors on magnetized biomorphic microcarriers. Journal of Materials Chemistry B 2020. Download here: https://pubs.rsc.org/-/content/articlelanding/2020/tb/c9tb02955a#!divAbstract Microcarriers with the ability to release and catch substances are highly desired metamaterials and difficult to obtain. Herein, we report a straightforward strategy to synthesize these materials by combining silica-biomorphs with mesocrystals. An easy access to microcarrier hulls with covalently bound spiropyrans…

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Mineral Vesicles and Chemical Gardens From Carbonate-Rich Alkaline Brines of Lake Magadi, Kenya

Mineral Vesicles and Chemical Gardens From Carbonate-Rich Alkaline Brines of Lake Magadi, Kenya

Melese Getenet, Juan Manuel García-Ruiz, Cristóbal Verdugo-Escamilla and Isabel Guerra-TGetenet, M.; García-Ruiz, J.M.; Verdugo-Escamilla, C.; Guerra-Tschuschke, I. Mineral Vesicles and Chemical Gardens From Carbonate-Rich Alkaline Brines of Lake Magadi, Kenya. Crystals 2020, 10, 467. Download here: https://www.mdpi.com/2073-4352/10/6/467 Mineral vesicles and chemical gardens are self-organized biomimetic structures that form via abiotic mineral precipitation. These membranous structures are known to catalyze prebiotic reactions but the extreme conditions required for their synthesis has cast doubts on their formation…

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PROMETHEUS TECHNICAL MEETING ”MINUTES”

The 2015 annual meeting was held on July 15 in IACT (Granada, Spain), with attendees: Juan Manuel Garcia Ruiz, Juan Morales, Cristóbal Verdugo, Alfonso García Caballero, Manolis Giampouras, Julian Opel, Francisca Espinosa, and Luis González. During that meeting, the Ph.D student Manolis Giampouras gave a presentation on the working plan of his thesis on “Mg and Ca carbonate and hydroxide precipitation in serpentinite-hosted alkaline environments”. Also, Luis González presented the main results of a study…

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First annual meeting of Prometheus

The first annual meeting of the Prometheus project was held on 16-17 September 16-17, 2014, in IACT (Granada, Spain). Prof. Juan Manuel Garcia Ruiz introduced the general aspects related to the ”Pattern formation and mineral self-organization in highly alkaline natural environments”. Other important scientists gave talks on related subjects including: The geochemistry of potential environments for the origin of life on the early Earth;  Organic compounds in serpentinization scenarios; Precipitation of calcium carbonate; Silica gardens;…

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Identifying microbial life in rocks: Insights from population morphometry

Identifying microbial life in rocks: Insights from population morphometry

Rouillard, J., García-Ruiz, J. M., Kah, L., Gérard, E., Barrier, L., Nabhan, S., … & van Zuilen, M. A. (2019). Identifying microbial life in rocks: Insights from population morphometry. Geobiology. Download here: https://onlinelibrary.wiley.com/doi/full/10.1111/gbi.12377 The identification of cellular life in the rock record is problematic, since microbial life forms, and particularly bacteria, lack sufficient morphologic complexity to be effectively distinguished from certain abiogenic features in rocks. Examples include organic pore‐fillings, hydrocarbon‐containing fluid inclusions, organic coatings on exfoliated…

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Field trip to Ronda peridotites (Malaga, Spain)

Field trip to Ronda peridotites (Malaga, Spain)

A second field trip to the Ronda peridotites was carried out on the 2-5th May 2016 in order to investigate in more details the geochemistry of the alkaline waters and the occurring mineralization. We collected several water and solid samples to examine the chemical profiles of river and hyperalkaline spring waters, as well as the phases and textures of the present carbonate minerals. Finally, we conducted an additional field trip to the alkaline springs in…

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A big ”Thank you” to all the ERC officials from the members of the Prometheus project

A big ”Thank you” to all the ERC officials from the members of the Prometheus project

ERC  (European Research Council) projects have earned an excellent reputation within and outside Europe. They are difficult projects to obtain, but once you get one, you can understand that they are designed specifically for the leading scientists of each project and the people who are going to carry them out. It is evident that the ERC officials are there to help and facilitate the research under a strict framework of legality. From the evaluation to…

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