Delays in High-Radioactivity Assays Pose Challenges Amid Infini’s Exploration Push

Exploration Momentum Builds in Saskatchewan

Infini Resources Limited (ASX, I88) is ramping up its uranium exploration efforts at the Reynolds Lake and Reitenbach Lake projects in Saskatchewan, Canada, following encouraging preliminary results from September’s field campaigns. The standout highlight was the identification of visible uraninite mineralisation at a previously undocumented outcrop at Reitenbach Lake, a significant breakthrough given the project’s location on the eastern margin of the prolific Athabasca Basin – a globally renowned uranium province.

The September program involved extensive sampling, with 773 soil and 148 rock samples collected, and scintillometer readings reaching as high as 65,550 counts per second (cps). These readings, while preliminary, indicate strong radiometric anomalies coinciding with major electromagnetic (EM) conductors and structural corridors, suggesting potential for shallow unconformity-style uranium mineralisation.

Strategic Follow-Up Field Program

Building on these promising signs, Infini is accelerating its field activities with a follow-up program scheduled to commence in late October 2025. This next phase will focus on detailed geological mapping, targeted rock and soil sampling, and the use of portable X-ray fluorescence (pXRF) technology to provide rapid in-field geochemical screening. These efforts aim to refine the geological model and advance the definition of drill-ready targets ahead of the winter season.

CEO Rohan Bone emphasised the importance of the findings, stating that the discovery of visible uraninite alongside widespread radiometric anomalies aligned with key geological structures underscores the projects’ potential. He highlighted that the accelerated program is part of Infini’s broader strategy to deliver high-impact uranium discoveries in tier-one jurisdictions.

Assay Results and Next Steps

Assay results from the September samples, including six high-radiation samples sent for expedited analysis, are expected in the fourth quarter of 2025. However, one sample exhibited radioactivity levels requiring special safety protocols, causing delays in its assay turnaround. The follow-up program’s assay results are anticipated in the first quarter of 2026, which will be critical in confirming the presence and grade of uranium mineralisation and guiding subsequent drilling campaigns.

These exploration activities complement Infini’s ongoing Phase 2 drilling at the Portland Creek Uranium Project, reinforcing the company’s multi-pronged approach to advancing its uranium portfolio in Canada.

Geological Context and Regional Significance

The Reynolds and Reitenbach Lake projects cover a combined 677 square kilometres on the eastern outboard margin of the Athabasca Basin. The area is geologically complex, featuring Archean to Paleoproterozoic metamorphic and igneous rocks, bisected by the Needle Falls Shear Zone – a major structural corridor known to host uranium mineralisation. The presence of graphitic schists and gneisses, along with coincident EM conductors and radiometric anomalies, mirrors geological settings of known uranium deposits such as Eagle Point and Rabbit Lake.

Infini’s exploration strategy leverages this favourable geology, aiming to delineate high-confidence drill targets that could unlock significant uranium resources in one of the world’s most prolific uranium districts.