F4 Uranium conducts airborne survey at Grey Island

Executive Summary

• F4 Uranium Corp. reports favorable results from an airborne mobile magnetotellurics (mobile MT) survey conducted at its Grey Island project in the southern Athabasca basin.
• The survey identified multiple large-scale linear resistivity features, interpreted as prospective corridors and promising target areas for future exploration.
• The Grey Island project is largely underexplored, with only one historic drill hole completed on the property, despite its location near significant regional uranium deposits and shear zones.

Key Details

• Survey Methodology: Airborne mobile magnetotellurics (mobile MT) survey completed by Expert Geophysics Surveys Inc.
• Survey Results: Identified multiple large-scale linear resistivity features representing prospective corridors.
• Project Location: Grey Island project is located 70 km west of the Key Lake mine (Cameco/Orano) and 60 km east of Cameco's Centennial uranium deposit.
• Regional Context:
  • Located near the Cable Bay shear zone, a regional structural feature interpreted as a prospective conductive corridor.
  • Nearby drill hole ND0801 (drilled by Nuinsco) intersected 707 ppm uranium in a sandstone sample at the unconformity, located 12 km west of Grey Island.
  • CanAlaska's Cree East property, approximately 10 km east of Grey Island, has seen assays up to 0.015% U3O8.
• Historical Exploration on Grey Island:
  • Only one documented drill hole (FLM-08-05) has been completed on the property.
  • Hole FLM-08-05 reported bleaching and alteration in sandstone, along with pyritic and graphitic alteration in basement rocks, which are early geological signatures of possible uranium-bearing systems.
• Property Details:
  • 100% owned by F4 Uranium.
  • Consists of 22 claims spanning 47,913 hectares.
  • Primarily unexplored with outdated geophysical data prior to this survey.
• Future Plans: Initial follow-up with detailed ground geophysics, followed by drilling.

Notable Quotes

• Erik Sehn, Vice-President of Exploration: "Grey Island represents our largest, and most underexplored land package in the southern Athabasca basin. With only a single historic drill hole and outdated geophysical data available, we consider the mobile MT survey as an important first step to assess the property for conductive trends. The results of this survey display large, linear resistivity low anomalies and merit further target generation, initially with detailed ground geophysics and eventually drilling."