IsoEnergy-Purepoint Joint Venture Delivers High-Grade Uranium Results at Dorado Project

Drilling Program at Dorado Project Yields High-Grade Uranium Intercepts Despite Wildfire Challenges

IsoEnergy and Purepoint Uranium have reported significant uranium discoveries from their summer drilling program at the Dorado Project in Saskatchewan’s Athabasca Basin. The joint venture partners encountered exceptional grades at the Nova discovery zone, with one hole intersecting 8.1% U₃O₈ over 0.4 metres within a broader 2.1-metre interval grading 1.6% U₃O₈.

The summer program, which was forced to conclude early due to regional wildfires, completed 5,030 metres across 11 drill holes – representing 93% of the planned 5,400-metre campaign. Despite the operational challenges, the results mark a significant step forward for the project.

“Eight percent uranium is an excellent grade from the centre of the very strong radioactive interval drilled by hole 7A,” said Chris Frostad, President and CEO of Purepoint Uranium. “These assays reinforce the strength of this newly discovered system and provide a solid anchor point as we continue to test the mineralized structure in all directions.”

The Nova discovery continues to demonstrate consistent uranium mineralization across multiple drill holes. Previous results from the area include hole PG25-05, which intersected 1.0 metre at 2.19% U₃O₈, including 0.3 metres at 5.38% U₃O₈, establishing a pattern of high-grade uranium occurrences within a defined geological structure.

Beyond the Nova zone, the drilling program targeted two additional areas – the Turaco Grid and Serin Grid – which provided valuable calibration data for the project’s geophysical model despite not encountering significant uranium mineralization. At Serin, drill hole SL25-11 intersected anomalous radioactivity within a 6-metre-wide chloritized pegmatite, with readings up to 1,200 counts per second (CPS) from the downhole gamma probe.

The Dorado Project represents a substantial land package, encompassing over 98,000 hectares of prime uranium exploration ground in Saskatchewan’s Athabasca Basin. The project area includes the former Turnor Lake, Geiger, Edge, and Full Moon properties – all characterized by graphite-bearing lithologies and fault structures favorable for uranium mineralization.

A key advantage of the project is its relatively shallow unconformity depths, typically ranging between 30 and 300 metres. This geological feature enables highly efficient drilling operations and rapid follow-up on exploration results, reducing operational costs compared to deeper basement targets elsewhere in the basin.

The 50/50 joint venture between IsoEnergy (NYSE American: ISOU | TSX: ISO) and Purepoint Uranium (TSXV: PTU | OTC: PTUUF) provides both companies with exposure to multiple high-potential uranium exploration properties while sharing operational costs and technical expertise. This partnership structure has created one of the largest uranium exploration land packages in the Athabasca Basin.

Saskatchewan’s Athabasca Basin has long been recognized as hosting some of the world’s highest-grade uranium deposits. The region features established infrastructure, operates within a favorable mining jurisdiction, and has demonstrated proven geological potential – factors that make it a preferred destination for uranium exploration investment.

The timing of these exploration results aligns with growing global interest in uranium as nuclear energy gains recognition as a clean baseload power source. Industry analysts note that increased uranium demand projections, coupled with limited new supply development, have created a favorable market environment for exploration companies with high-quality assets.

The companies employed industry-standard techniques for uranium exploration during the drilling program. Core samples underwent analysis at Saskatchewan Research Council Geoanalytical Laboratories, an ISO/IEC 17025:2005 accredited facility independent of both companies. The laboratory utilized partial and total digestion methods with inductively coupled plasma mass spectroscopy and optical emission spectroscopy for multi-element analysis.

Looking ahead, both companies are currently awaiting complete geochemical assays and structural interpretations from the 2025 drill program. These results will guide detailed planning for follow-up drilling scheduled for early 2026, with programs focused on expanding the Nova discovery and testing priority corridors across the broader Dorado Project property.

The deferral of planned drilling at the nearby Celeste project, another joint venture between the two companies, provides an opportunity to incorporate lessons learned from the Dorado program and potentially enhance exploration efficiency when operations resume.

For the uranium industry, these results represent another positive indicator for the Athabasca Basin’s continued potential to yield high-grade discoveries. As global nuclear energy capacity expands and uranium supply constraints persist, exploration success in established mining jurisdictions like Saskatchewan takes on increased significance for meeting future fuel requirements.