F3 Announces High Grade Domain of 10.8 M lbs. at 12.23% U3O8 at JR Zone Uranium Deposit Within an 11.8 M lbs. at 4.39% U3O8 Initial Indicated Mineral Resource
High Grades, Low Valuation: F3 Delivers 11.8 Million Pound Maiden Resource as Market Ignores Discovery Success
On December 22, 2025, F3 Uranium Corp (F3) announced its maiden Mineral Resource Estimate (MRE) for the JR Zone at the 100% owned Patterson Lake North (PLN) Property. The report defines an Indicated Mineral Resource of 11.8 million pounds of U3O8 at an average grade of 4.39%. Notably, this includes a ultra-high-grade domain containing 10.8 million pounds at a staggering 12.23% U3O8. The company also reported a healthy treasury of $26.1 million as of December 18, 2025, and a shift in exploration focus toward the recently discovered Tetra Zone, located 13km away.
This news is a major de-risking milestone, moving the company from a "discovery" story to a "resource" story. - Grade Superiority: A grade of 4.39% (and 12.23% in the core) places the JR Zone among the highest-grade uranium deposits globally. For context, typical Athabasca Basin basement-hosted deposits often target grades of 1-2%. - Classification Strength: The entire 11.8 million pounds is classified as "Indicated," which provides a high level of geological confidence and is a prerequisite for future economic studies (Pre-Feasibility). - Growth Potential: While 11.8 million pounds is relatively small compared to neighboring giants like NexGen’s Arrow, the company is treating this as an "initial" estimate. The immediate pivot to the Tetra Zone, which has already shown radioactive hits and high-grade assays (2.50% over 1.0m), suggests the company believes PLN is a multi-deposit system. - Financial Position: The $26.1 million treasury is sufficient to fund the aggressive 2026 drilling program without immediate dilutive pressure, a rare position for an explorer.
F3 Uranium Corp is a Vancouver-based explorer focused on the Athabasca Basin. Its flagship project is the Patterson Lake North (PLN) project, which spans 42,961 hectares. PLN is strategically located on the southwestern edge of the basin, near massive discoveries like Fission’s Triple R and NexGen’s Arrow. The project is divided into three main properties: PLN (hosting the JR Zone), Minto, and Broach (hosting the Tetra Zone).