Stuhini Identifies High-Grade Copper-Gold Porphyry Target at Ruby Creek Project, BC

On November 4, 2025, Stuhini Exploration announced the identification of a potential new copper-gold porphyry target at its flagship Ruby Creek Project in British Columbia. The discovery is based on prospecting that yielded high-grade grab samples with assays up to 8.1% copper (Cu) and 36.8 grams per tonne (g/t) gold (Au). Magnetic data suggests the mineralized system could be approximately 1 kilometer by 600 meters in size. The CEO, Meredith Eades, framed this as an exciting early-stage result that adds to the project's existing assets, which include the "Silver Surprise" high-grade silver zone, an established molybdenum deposit, and other regional prospects.

The identification of a new copper-gold porphyry target is a material positive development for Stuhini. The company has methodically built a multi-commodity narrative at Ruby Creek throughout 2025, and this news adds a significant and potentially very valuable new dimension.

• Strategic Progression: After a brief focus on Nevada projects in late 2024 and early 2025, the company announced a strategic refocus on its flagship Ruby Creek project in June 2025. This was followed by news highlighting the project's tungsten potential (July), the completion of a mini-bulk sample at the high-grade Silver Surprise zone (October), and the engagement of Tetra Tech for an economic assessment of the large molybdenum deposit (October). The announcement of a large-scale copper-gold porphyry target fits perfectly into this renewed strategy, showcasing the district-scale potential of the property.
• Impact on Value Proposition: While the Ruby Creek Molybdenum deposit provides a foundation of defined tonnage (433 million lbs M&I), its economics are subject to metal prices and a high initial capital expenditure. The high-grade silver and now the high-grade copper-gold porphyry target add significant exploration upside and the potential for a discovery that could be more impactful for a small-cap company.
• Critical Caveats: As an analyst focused on risk, it is crucial to emphasize that this is a very early-stage target. The results are from selective "grab samples," which are not representative of the overall grade of a deposit. The size is inferred from a magnetic survey, not drilling. The potential is conceptual and requires substantial follow-up work, including systematic mapping, sampling, and eventual drilling, to be validated.

Despite the early-stage nature, the news is material because it introduces a new, high-potential target type that was not previously part of the company's story at Ruby Creek. It enhances the project's optionality and provides another catalyst for investor interest, building on the momentum from recent news flow.

Stuhini Exploration Ltd. is a Canadian mineral exploration company focused on the advancement of its projects in British Columbia. Its flagship asset is the 100%-owned, 29,734-hectare road-accessible Ruby Creek Project, located near Atlin, B.C. The project is a multi-commodity asset hosting: - A large, pit-constrained NI 43-101 compliant Molybdenum deposit with 433 million pounds of Molybdenum in the Measured and Indicated category. - The "Silver Surprise" zone, a high-grade silver prospect with surface samples returning bonanza grades up to 16,030 g/t silver. - Numerous tungsten occurrences, including the past-producing Black Diamond mine. - The newly identified copper-gold porphyry target announced in the most recent news release.