Fortuna Boosts Diamba Sud Gold Resources by 73% to 1.25M Ounces

Event summary

  • Fortuna Mining Corp. increased Diamba Sud's Indicated Mineral Resources by 73% to 1.25 million ounces of gold as of January 16, 2026.
  • Southern Arc deposit emerged as the largest gold deposit at Diamba Sud with 367,000 ounces.
  • Feasibility study for the project is targeted for completion by Q2 2026.
  • Infill drilling upgraded Inferred to Indicated Resources, increasing resource confidence.

The big picture

Fortuna's significant resource expansion at Diamba Sud aligns with its strategy to grow into a 500,000-ounce-per-year gold producer. The project's advancement, alongside the Séguéla Mine expansion, positions Fortuna to capitalize on long-life assets in a competitive gold mining landscape. The updated resource estimate strengthens the foundation for a potential construction decision, though regulatory and market dynamics remain critical factors.

What we're watching

Resource Growth Potential
Whether ongoing exploration drilling will further expand mineralization beyond current resource envelopes.
Feasibility Study Timeline
The pace at which Fortuna can complete the feasibility study and secure a final investment decision by mid-2026.
Regulatory Approvals
How the pending exploitation and environmental impact assessment permits will impact project development timelines.

Related topics

Mining