First American Uranium Discovers New Pegmatite Outcrop During Site Visit; Confirms 27 km of Prospective Nb-REE Trends at Seigneurie, Quebec

Executive Summary

• First American Uranium completed a site visit to the Seigneurie Property, confirming a newly discovered pegmatite outcrop that expands the known footprint of the Nb‑REE system.
• The company reports over 27 km of prospective geological trends across the property, supporting continued exploration and potential drill targeting.
• Management highlighted strong infrastructure advantages (proximity to St. Lawrence River and Hydro‑Québec power line) and outlined next steps for fall‑season mapping, sampling and prospecting.

Key Details

• Site visit conducted on 22 Oct 2025 by CEO Murray Nye and Technical Advisor Clyde McMillan.
• New pegmatite outcrop located ~700 m SE of the Seigneurie Nb‑REE Prospect; minimum width ≈4 m, striking E‑W, dipping 45° S.
• Outcrop mineralogy: quartz, feldspar, biotite, magnetite; scintillometer response indicates potential REE/Nb mineralization.
• Ongoing field work includes channel sampling, detailed geological mapping and prospecting across the property.
• Integrated airborne magnetic data and government mapping delineate >27 km of prospective trends aligned with magnetic lineaments and quartz‑syenite intrusions.
• Historical width from 1978 SOQUEM work estimated ≥50 m; current observations suggest comparable scale.
• Management comments emphasize the project’s potential to become a leading Nb‑REE development in North America.
• Next steps: continue fall‑season field programs, generate assay results, and use data to define future drill targets.
• Strategic advantages: excellent access via St. Lawrence River corridor and existing Hydro‑Québec power infrastructure.

Notable Quotes

“The scale of the mineralized system, combined with the discovery of a new pegmatite exposure and 27 km of prospective trends, positions Seigneurie as a truly exciting opportunity for the Company.” – Murray Nye, CEO

“The width interpreted by SOQUEM in 1978 of at least 50 m appears reasonable based on current field observations…the geological continuity and scale are encouraging indications for follow‑up work.” – Clyde McMillan, P.Geo., Technical Advisor