Optimising high-resolution, high-precision analysis of Sr-isotopes

Smelted chromium and ferrochrome ore. Image: Sproetniek AuScope edited.

AuScope is unlocking new insights into geological processes crucial for accumulating critical mineral deposits via revolutionising Sr-isotope micro-analysis in a range of geological materials using cutting-edge laser ablation multi-collector mass spectrometry (LA-MC-ICP-MS).

Overview

Conducted at The University of Queensland's Radiogenic Isotope Facility, this initiative led by Associate Professor Teresa Ubide aims to improve the precision and spatial resolution of Sr-isotope analysis. The project enhances insights into critical mineral deposits by tracking the source and contamination of individual magma pulses in magmatic systems.

“Tracking the key ingredients that lead to accumulation of critical metals in magmas is an exciting new capability of interest to academia, government and the mineral industry” - Associate Professor Teresa Ubide, Project Lead

The Challenge

Current methods lack sufficient spatial resolution and precision to accurately trace magma sources and crustal contamination at the scale of individual mineral zones in magmatic systems, hindering critical mineral exploration and research.

Expected Outcomes

Optimised LA-MC-ICP-MS protocols for a range of geological materials.
Peer-reviewed publications and open-access data reduction protocols.
Enhanced data reproducibility and accessibility via FAIR Data principles.
Contribution to the development of the new AusGeochem Sr isotope data model in collaboration with the AusGeochem core team.

Who will benefit

Improved access to high-resolution Sr-isotope analysis will benefit geochemistry and mineralogy researchers, aiding in a better understanding of magmatic and mineral systems.

Access

University of Queensland Radiogenic Isotope lab facilities.
published methods and data in peer-reviewed literature and UQ eSpace.
data reduction protocols via open-access repositories UQ eSpace and Iolite.

Key Publications

Ubide, T., Márquez, Á., Ancochea, E., Huertas, M. J., Herrera, R., Coello-Bravo, J. J., Sanz-Mangas, D., Mulder, J., MacDonald, A., & Galindo, I. (2023). Discrete magma injections drive the 2021 La Palma eruption. Science Advances. https://doi.org/adg4813
Mulder, J., Hagen-Peter, G., Ubide, T., Andreasen, R., Kooijman, E., Kielman-Schmitt, M., Feng, X., Paul, B., Karlsson, A., Tegner, C., Lesher, C., & Costa, F. (2023). New Reference Materials, Analytical Procedures and Data Reduction Strategies for Sr Isotope Measurements in Geological Materials by LA-MC-ICP-MS. Geostandards and Geoanalytical Research, 47(2), 311-336. https://doi.org/10.1111/ggr.12480

Project Name
Optimising high-resolution, high-precision analysis of Sr-isotopes

Project Lead

Featured