Stinger Delivers Strong Supergene Upside

Key Concepts

• Supergene Mineralization: A process where weathering dissolves carbonate gangue, leaving behind concentrated, higher-grade critical metals.
• Carbonatite: An igneous rock composed of more than 50% carbonate minerals; a primary host for rare earth elements (REEs) and niobium.
• Fractionation: The process by which magma separates into different chemical components; highly fractionated carbonatites are often associated with higher concentrations of rare metals.
• Gangue: Commercially valueless material that surrounds or is closely mixed with a wanted mineral in an ore deposit.
• Exploration Target: A statement or estimate of the mineral potential of a defined geological setting.

The Significance of Supergene Mineralization at Stinger

The speaker emphasizes that supergene mineralization at the Stinger deposit is critical for two primary reasons:

1. Grade Enrichment: Weathering processes dissolve the carbonate gangue, causing critical metals (which are "resistate") to accumulate. This results in a three to five-fold increase in grade compared to the underlying fresh carbonatite.
2. Operational Viability: Because this mineralization occurs near the surface, it presents an ideal opportunity for open-cut mining. This allows for a lower-cost, higher-grade start to mining operations before transitioning to deeper, fresh material.

Geological Potential and Exploration Upside

The speaker draws a comparison to the Mountain Pass deposit in the US, noting that the discovery of highly fractionated carbonatite at the Gifford Creek complex is a major milestone.

• Exploration Status: Only 25% of the Gifford Creek carbonatite has been drilled using wide-spaced drilling.
• Upside: Every drilling campaign has yielded new discoveries and more highly fractionated zones. The goal is to identify areas within the fresh carbonatite that contain 5–6% total rare earth elements (TREE).
• Synergy: If highly fractionated fresh material is found, and that material is subsequently upgraded by supergene processes at the surface, it creates a "win-win" scenario for project economics.

Strategic Roadmap and Development Framework

The company is currently executing a two-pronged strategy to advance the project:

1. Updating the Exploration Target

The original exploration target, established 12–18 months ago, focused exclusively on niobium. The updated target will:

• Incorporate critical metal byproducts to provide a more comprehensive valuation.
• Model the project after the Elk Creek deposit in the US, which demonstrates the economic viability of producing niobium and rare earths as primary products, alongside other valuable byproduct elements.

2. Metallurgical Validation

Before committing to extensive resource drilling, the company is prioritizing metallurgical testing.

• Methodology: The team is replicating the process used at the "Yen" project to confirm that a marketable product can be extracted from the material.
• Rationale: Proving the ability to produce a viable product is a prerequisite for allocating significant capital, time, and personnel toward full-scale resource drilling.

Conclusion

The Gifford Creek carbonatite complex represents a significant exploration opportunity characterized by high-grade potential through supergene enrichment and highly fractionated fresh rock. By focusing on metallurgical proof-of-concept and expanding the exploration target to include a broader suite of critical metals, the company aims to de-risk the project and establish a clear pathway toward resource definition and eventual production. The overarching strategy is to prove the "product-ability" of the ore before scaling up drilling efforts.