Cauldron Energy has identified a large, previously undetected palaeochannel adjacent to its Bennet Well uranium deposit, expanding exploration potential at the Yanrey Uranium Project in WA.
- Discovery of Yanrey palaeochannel via passive seismic survey
- Palaeochannel is 1 km wide and 4 km long, comparable to Bennet Well channel
- No prior drilling in the newly identified palaeochannel area
- Yanrey palaeochannel to be a high-priority target in 2026 drilling program
- Yanrey Project hosts over 55 million pounds of uranium oxide resources
New Yanrey Palaeochannel Emerges as Significant Uranium Target
Cauldron Energy Limited (ASX:CXU) has revealed the discovery of a substantial buried palaeochannel, dubbed the Yanrey palaeochannel, lying immediately west of its flagship Bennet Well Uranium Deposit in Western Australia. This new geological feature was identified through passive seismic surveying undertaken in 2026, marking a notable advancement in the company’s exploration efforts at the Yanrey Uranium Project.
The Yanrey palaeochannel spans approximately 1 kilometre in width and extends at least 4 kilometres in length, running roughly parallel to the Bennet Well channel that hosts significant uranium mineralisation. Importantly, this area has never been subject to historical drilling, largely because previous airborne electromagnetic surveys failed to detect the channel due to a conductive marine shale layer known as the Muderong Shale blanketing the surface.
Geophysical Techniques Reveal Hidden Geological Structure
The discovery was made possible by Southern Geoscience Consultants’ interpretation of passive seismic data collected over 10 survey lines totaling nearly 49 line kilometres. This method proved effective in penetrating the conductive Muderong Shale, which had masked the palaeochannel from traditional airborne EM surveys. The seismic reflections indicate unconsolidated sands and gravels overlying granitic bedrock, consistent with palaeochannel deposits known to host uranium mineralisation in the region.
Cauldron’s CEO Jonathan Fisher highlighted the significance of the find, noting that every palaeochannel tested between Bennet Well and Manyingee North to date has contained uranium mineralisation. He emphasised the Yanrey palaeochannel as a high-priority target for the imminent 2026 drilling program, underscoring the potential for resource expansion.
Yanrey Uranium Project: A Growing Uranium Province
The Yanrey Uranium Project covers around 1,493 square kilometres along an 80-kilometre stretch of Early Cretaceous palaeo-coastline. It currently hosts three defined uranium deposits; Bennet Well, Manyingee South, and Manyingee North; with a combined Mineral Resource Estimate exceeding 55 million pounds of uranium oxide.
The Bennet Well deposit alone contains nearly 31 million pounds of uranium oxide, with mineralisation occurring in multiple spatially distinct channels. The newly discovered Yanrey palaeochannel’s dimensions and geological setting suggest it could host a resource comparable in size to Bennet Well, though drilling will be needed to confirm this.
Exploration Program and Next Steps
Following the passive seismic survey, Cauldron has completed a heritage survey over the Yanrey palaeochannel area and plans to prioritise it in the upcoming drilling campaign commencing later this month. The company’s exploration strategy integrates airborne EM surveys with passive seismic methods to delineate palaeochannels and target uranium mineralisation more effectively.
Additional passive seismic surveys are planned to further map the palaeodrainage system, which now includes over 20 identified palaeochannels within Cauldron’s tenements. The company aims to expand its resource base through systematic drilling and geophysical exploration, capitalising on the region’s proven uranium potential.
While the Yanrey palaeochannel discovery is promising, the actual extent and grade of uranium mineralisation remain to be determined. The forthcoming drilling results will be crucial in assessing the channel’s economic viability and its contribution to Cauldron’s growing uranium portfolio.
Bottom Line?
The Yanrey palaeochannel discovery opens a new frontier for Cauldron’s uranium exploration, but the real test lies in upcoming drilling to validate its mineral potential.
Questions in the middle?
- Will the Yanrey palaeochannel yield uranium grades comparable to Bennet Well?
- How might the new palaeochannel discovery impact Cauldron’s overall resource estimates?
- Could further passive seismic surveys uncover additional hidden palaeochannels in the region?