Title :

Ultrafast μLIBS imaging for the multiscale mineralogical characterization of pegmatite rocks

Author(s) :

Alvarez-Llamas, Cesar [Auteur]
Institut Lumière Matière [Villeurbanne] [ILM]
Tercier, Adrian [Auteur]
Institut Lumière Matière [Villeurbanne] [ILM]
Ballouard, Christophe [Auteur]
Université de Lorraine [UL]
Fabre, Cécile [Auteur]
Université de Lorraine [UL]
Hermelin, Sylvain [Auteur]
Institut Lumière Matière [Villeurbanne] [ILM]
Margueritat, Jeremie [Auteur]
Institut Lumière Matière [Villeurbanne] [ILM]
Duponchel, Ludovic [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
Dujardin, Christophe [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Motto-Ros, Vincent [Auteur]
Institut Lumière Matière [Villeurbanne] [ILM]

Journal title :

J. Anal. At. Spectrom.

Abbreviated title :

J. Anal. At. Spectrom.

Volume number :

-

Pages :

-

Publication date :

2024-03-25

ISSN :

0267-9477

HAL domain(s) :

Chimie/Chimie théorique et/ou physique

English abstract : [en]

This article presents an innovative application of kHz regime μLIBS – Laser-Induced Breakdown Spectroscopy for generating detailed compositional maps of geological samples. The method effectively covers large areas (tens ...
Show more >This article presents an innovative application of kHz regime μLIBS – Laser-Induced Breakdown Spectroscopy for generating detailed compositional maps of geological samples. The method effectively covers large areas (tens of cm2) rapidly while maintaining high lateral resolution (below 20 μm), producing some of the most extensive LIBS compositional images to date, with a size of 10 million pixels. Employing elemental-based images, we developed a direct methodology for mineral phase identification through mask-creation operations and logical relationships. This approach was successfully applied to reconstruct the mineralogical map of a Li-ore from the west-European Variscan belt, identifying 14 different mineral phases, including economically valuable ones like lepidolite, cassiterite, and columbite-group minerals. Furthermore, based on the reverse normative calculation, the chemical composition of the sample was calculated from the mineral phases previously obtained. The kHz μLIBS approach marks a significant advancement in elemental and phase imaging, especially pertinent to geological applications, providing comprehensive petro-geochemical insights, essential for a fast geological characterization.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS

Collections :

• Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement (LASIRE) - UMR 8516
• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Research team(s) :

Propriétés magnéto structurales des matériaux (PMSM)

Submission date :

2024-05-06T22:10:39Z
2024-05-22T09:29:02Z