F3 More Than Doubles Tetra Zone Length to 135m
Resource Reality Hits the Tape as F3 Pivots from JR Zone Maiden Resource to Tetra Zone Strike Extension
The news release dated January 13, 2026, details the final scintillometer results from the Fall 2025 drill program at the Tetra Zone, part of the Broach Property at the Patterson Lake North (PLN) Project. The key takeaway is the doubling of the interpreted mineralized plunge length from 60 meters to 135 meters.
Key technical results include: - Hole PLN25-221 confirmed up-plunge continuity, stepping out 28 meters and recording composite radioactivity with peak readings of 4,500 counts per second (cps). - Holes PLN25-220A and PLN25-220AW1 tested the down-plunge (western) side; while they hit the structure and broader shearing, they appeared to miss the core mineralized zone, intersecting just above it. - Assays are still pending for several holes, including PLN25-217, which previously reported a significant 29.5-meter radioactivity interval with a high-grade core of 2.30 meters exceeding 10,000 cps. - A new drill program is slated to begin in late January 2026 to target the remaining 300 meters of the shear zone toward the Athabasca Unconformity.
The impact is positive but categorized as routine/operational. While "doubling" a mineralized length sounds significant, the total length remains modest (135m) compared to major deposits in the Athabasca Basin. Furthermore, these results rely on scintillometer (cps) readings rather than chemical assays; as an analyst, I must highlight that cps readings are preliminary and do not always correlate linearly with uranium grade (U3O8).
The real material event for the company occurred on December 22, 2025, with the announcement of the Maiden Mineral Resource Estimate (MRE) for the JR Zone (11.8M lbs U3O8 at 4.39% Indicated). The January 13 news confirms that management is successfully shifting focus to the Tetra Zone discovery (13km away) to provide the next leg of growth. The consistency in hitting the structure (even when missing the core) suggests a robust plumbing system, but the market is likely waiting for the pending assays from Hole 217 to assign higher value.
F3 Uranium Corp (TSXV: FUU) is a junior explorer focused on the southwestern edge of the Athabasca Basin, Saskatchewan. Its flagship Patterson Lake North (PLN) project is located near world-class deposits like NexGen’s Arrow and Fission’s Triple R.
The project is split into three main areas: - PLN Property (JR Zone): Hosts the maiden indicated resource of 11.8M lbs U3O8. - Broach Property (Tetra Zone): The current exploration focus, showing high-grade discovery potential. - Minto Property: Early-stage exploration.