By: Ecofin agency

Senegal’s Diamba Sud gold project now contains 1 million ounces, or 28.6 tons, of gold in its indicated and inferred mineral resources. The announcement was made on Tuesday by Canada’s Fortuna Mining, which owns the project in the Kéniéba-Kédougou Inlier, an area known for its world-class gold deposits.

The new mineral resource estimate for Diamba Sud shows 724,000 ounces in the indicated category, a 53% increase from the last estimate in 2024. Fortuna’s team also conducted a first-ever inferred resource estimate for two of the deposits, which resulted in a 93% increase in resources in that category, now totaling 285,000 ounces across seven deposits.

This update is based on a drilling campaign conducted between July 2024 and July 2025, which included 243 holes drilled over 31,652 meters. The data will be used to support a preliminary economic assessment that Fortuna Mining plans to complete in the fourth quarter of 2025. The assessment will provide updated details on the project’s economic and technical viability.

A 2022 scoping study by the project’s former owner estimated that developing a gold mine would require an initial investment of $149 million and would produce 715,000 ounces of gold over 7.5 years.