Key Highlights

  • FireFly Metals (ASX:FFM) reports drilling that has extended the high-grade core zone at its Green Bay Copper-Gold Project in Canada.
  • Results include 16.4 metres at 9.2% copper equivalent and 15.5 metres at 12.4% copper equivalent.
  • The new mineralisation is up-dip, outside the current Mineral Resource Estimate and closer to surface.
  • A Feasibility Study is upcoming, and the company says the results could affect its mine plan and economics.

FireFly Metals Limited (ASX:FFM, TSX:FFM) announced on 9 November 2026 drilling results from its Green Bay Copper-Gold Project in Canada. The company says the high-grade core zone extends laterally, with up-dip mineralisation found outside the existing Mineral Resource Estimate. The results matter because they may change the shape of the mine plan that FireFly will test in its upcoming Feasibility Study.

The Latest Intersections

The two highlighted intersections are 16.4 metres at 9.2% copper equivalent and 15.5 metres at 12.4% copper equivalent. FireFly describes the up-dip position of this mineralisation as important, because material closer to surface would be easier to access if the project is mined.

The current core zone estimate is 18.1 million tonnes at 4.3% copper equivalent in the Measured and Indicated categories, and 7.0 million tonnes at 4.4% in the Inferred category. The new drilling lies beyond those figures.

Resource and Study Position

Across the wider project, the Mineral Resource Estimate stands at 60.2 million tonnes at 2.4% copper equivalent in the higher-confidence categories, plus 23.5 million tonnes at 2.5% in the Inferred category. These figures were reported in August 2026 and have not been updated for the new drilling.

FireFly has completed a preliminary economic assessment, which is not a feasibility study. The company says lateral extensions could add copper tonnes per vertical metre, which could enhance the economics. That view depends on assumptions that the upcoming Feasibility Study will need to test.

The extended core zone matters most in the context of the Feasibility Study. A larger high-grade zone closer to surface could alter the sequence of Mining and the mix of material processed, which in turn affects how the study models costs and recoveries. The company has said the results are significant for the mine plan, and the study will be the document in which that effect is quantified, using both existing resources and the new drilling data.

Points Still to Confirm

Mineralisation outside a resource does not automatically join it, and the continuity of the high-grade zone must be confirmed through further drilling. Metallurgical results and Capital cost estimates for the extended zone are not yet available.

Inferred material carries lower geological confidence, and a preliminary assessment cannot replace a feasibility study. FireFly has not yet explained how these results will be added to the resource model.

Final Word

The Green Bay results show the core zone continuing beyond the current resource, which is the main finding. Whether the extensions prove continuous enough to join the resource will be tested by further drilling and the Feasibility Study. Those results will show how much of the extended zone can be used in planning the mine.

The timing of the Feasibility Study will determine when the extended core zone is reflected in the company’s economic case.