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Highlights

  • Uranium mineralization confirmed at Q48 zone with maximum probe readings up to 79,800 cps
  • PG25-04 returned 11,050 cps over 3.7 m, including 64,220 cps over 0.4 m
  • PG25-05 intersected 27,750 cps over 2.3 m, with a peak of 75,660 cps over 0.4 m
  • Drilling confirms a uranium-bearing hydrothermal system within strongly altered basement rocks
  • 2025 program includes 5,400 m across 18 holes; third follow-up hole now underway

IsoEnergy Ltd. (TSX: ISO; NYSE American: ISOU) and Purepoint Uranium Group Inc. (TSXV: PTU; OTC: PTUUF) have confirmed a new uranium discovery at their 50-50 Dorado Joint Venture project in the Athabasca Basin, Saskatchewan. Early drill results from the Q48 zone indicate a significant mineralized structure, with gamma probe readings reaching as high as 79,800 counts per second (cps).

Two holes, PG25-04 and PG25-05, intersected a steeply dipping, north-south trending mineralized system hosted in clay-altered basement rocks—characteristics consistent with other Athabasca-style uranium deposits. PG25-04 returned 3.7 m averaging 11,050 cps, including a highly radioactive section of 64,220 cps over 0.4 m. PG25-05 intersected 2.3 m averaging 27,750 cps, peaking at 75,660 cps over 0.4 m.

According to IsoEnergy CEO Philip Williams, “This exploration success reinforces the strength of our partnership with Purepoint. We’ve positioned Dorado for continued success through a disciplined exploration effort.” Purepoint CEO Chris Frostad added, “These initial hits speak to the quality of the target and the systematic approach our team is taking.”

The Q48 target area lies within the southern Dorado property, identified through earlier geophysical and structural studies and confirmed by 2022 drilling. The current program aims to test this corridor fully, with 18 drill holes planned totaling 5,400 metres.

Hole PG25-04 intersected radioactive gouge seams within chloritized pegmatite at vertical depths around 60 m below the unconformity. PG25-05 encountered similar alteration and structure 40 m up-dip of PG25-04, confirming continuity along the mineralized corridor.

The Dorado Project spans over 98,000 hectares of highly prospective uranium terrain. The shallow depth of the unconformity, ranging between 30–300 m, allows for efficient drilling and rapid follow-up.

Gamma readings were collected using a Mount Sopris 2PGA-1000 probe. Assays are being processed at the Saskatchewan Research Council Geoanalytical Laboratories, an ISO-accredited facility in Saskatoon. Results remain preliminary, with core assays pending.