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Uranium systems processes in the Crocker Well Suite, South Australia

Created 17/10/2025

Updated 17/10/2025

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Magmatic-related uranium systems represent an uncommon, yet significant family of uranium mineral systems. Despite the extremely large size of some magmatic-related uranium deposits, the key processes controlling uranium deposition are poorly understood compared to other more common uranium deposit styles. Petrographic, geochemical and fluid inclusion studies have been undertaken at the Crocker Well granite-hosted uranium deposit in South Australia in order to better constrain the key processes in uranium mineralisation there. The results of this study allow a genetic model for the Crocker Well deposit to be proposed. Uranium mineralisation is interpreted to be associated with the intrusion of a volatile and sodium-rich pulse of magma, or with the localised release of a highly sodic fluid from the main granitic rocks in the area. Volatile saturation and fluid exsolution partitioned uranium and thorium into a magmatic-hydrothermal fluid phase, and initiated the creation of fractures, veins and breccia zones. These acted as fluid flow pathways for the magmatic fluid. Uranium deposition likely occurred as a result of temperature or pressure decrease. This genetic model has been translated into a number of mappable criteria which may be used in prospectivity studies for magmatic-related uranium systems. The presence of evidence suggesting the potential to generate a uranium-bearing magmatic fluid, evidence of permeable structures contemporary with igneous activity, and evidence of favourable host rocks are suggested as useful criteria.

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Field Value
Title Uranium systems processes in the Crocker Well Suite, South Australia
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/e6d6a0bf-ec15-49af-b180-fd83e3e2da30
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage Australia
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "Uranium systems processes in the Crocker Well Suite, South Australia". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/uranium-systems-processes-in-the-crocker-well-suite-south-australia