Cauldron Energy Unveils Major Uranium Extensions at Manyingee South

Expanding the Uranium Footprint

Cauldron Energy Limited (ASX, CXU) has announced compelling results from its 2025 drilling program at the Manyingee South deposit, part of the broader Yanrey Uranium Project in Western Australia. The recent completion of 23 additional air-core drillholes has revealed uranium mineralisation extending significantly beyond previous boundaries; up to approximately 1,000 metres upstream and several hundred metres laterally. This expansion underscores the potential for a substantial increase in the deposit’s resource base.

The Manyingee South palaeochannel, a key geological feature hosting the uranium mineralisation, has proven to be more intricate and extensive than initially understood. Geophysical surveys indicate the channel spans around 2,000 metres in width, with mineralisation remaining open to the east and upstream directions. Notably, high-grade zones associated with the lower “D” roll-front have been delineated in a crescent-shaped formation along the western side of the channel, highlighting promising targets for further exploration.

Strategic Drilling and Resource Implications

The drilling campaign has focused on defining the margins of the palaeochannel and following mineralisation onto newly acquired tenements, particularly E08/3204. The results confirm that the mineralised system extends into this area, lengthening the strike and enhancing the prospect for resource growth. Significant intercepts include drillhole 25YRAC032, which returned 1.78 metres at 750.8 ppm uranium oxide equivalent, and 25YRAC029 with 4.17 metres at 313.6 ppm, among others.

Cauldron’s CEO Jonathan Fisher expressed enthusiasm about these findings, emphasizing the opportunity to update the resource model in the first quarter of 2026. The company’s exploration manager, John Higgins, highlighted the encouraging nature of the results and the ongoing efforts to test additional palaeochannel targets, including the high-priority Manyingee North prospect.

Context within the Yanrey Uranium Project

The Yanrey Uranium Project is a significant uranium exploration asset, covering approximately 1,340 square kilometres and hosting over 40 million pounds of uranium oxide in mineral resources. The Manyingee South deposit itself contains an inferred resource of 11.1 million pounds of uranium oxide, with the potential for expansion as drilling continues. The project’s geological setting features multiple palaeochannels sourced from uranium-bearing granitoid uplands, making it a highly prospective region for sedimentary-hosted uranium deposits.

Cauldron’s approach combines detailed geophysical surveying with targeted drilling to delineate mineralisation within these palaeochannels. The recent passive seismic surveys have refined the understanding of channel edges, enabling more precise drilling and resource definition. The company plans to continue its exploration momentum by shifting drilling activities northward to Manyingee North before returning to Manyingee South to complete the 2025 program.

Looking Ahead

With the Manyingee South mineralisation remaining open in multiple directions and the discovery of complex channel architectures, Cauldron Energy is well-positioned to enhance its uranium resource inventory. The forthcoming resource update in early 2026 will be a critical milestone, potentially reshaping the valuation and strategic outlook for the Yanrey Uranium Project. Meanwhile, the exploration of Manyingee North promises to add further depth to the company’s regional uranium portfolio.