Prospect Resources has revealed significant new gold assay results from Nyungu Central, part of its Mumbezhi Copper Project in Zambia, confirming gold's broad presence alongside copper and cobalt. This discovery could materially improve project economics through valuable by-product credits.
- Gold mineralisation confirmed in 29 of 32 re-assayed holes at Nyungu Central
- Notable gold intercepts include 23.1m at 0.55g/t Au within copper zones
- Updated Mineral Resource Estimate incorporating gold expected in Q2 2026
- Phase 3 drilling program set to start in May 2026 targeting regional growth
- Metallurgical test work on copper, cobalt, and gold composites underway
Gold Emerges as Key By-Product at Nyungu Central
Prospect Resources Limited (ASX:PSC) has substantially upgraded the gold potential at its flagship Nyungu Central deposit within the Mumbezhi Copper Project in Zambia. Newly received assay results from 32 re-assayed drill holes confirm significant gold mineralisation in 29 holes, extending the known footprint of gold beyond previous understanding to include northern zones of the deposit. Noteworthy intercepts include a standout 23.1 metres grading 0.55 grams per tonne gold within existing copper mineralised zones, signalling a meaningful by-product opportunity.
This follows earlier re-assaying efforts reported in January 2026 and adds to the 150.8 million tonnes at 0.50% copper equivalent resource that already contains copper, cobalt, and gold. The widespread distribution of gold, combined with in-situ cobalt, provides a compelling case to enhance the Mumbezhi Project’s economics by lowering operating costs through by-product credits.
Resource Update and Drilling Plans
The company plans to incorporate all new gold assay data into an updated Indicated and Inferred Mineral Resource Estimate (MRE) for Nyungu Central, expected during the second quarter of 2026. This update will refine the scale, grade, and confidence of the gold component within the resource, potentially reshaping the project’s valuation metrics.
Meanwhile, Prospect is gearing up for its fully funded Phase 3 drilling program, scheduled to commence in early May 2026. This campaign is designed with an aggressive regional growth focus, aiming to expand mineralisation footprints and test new targets across the Mumbezhi licences. The Phase 3 program complements recent advances such as the increase to 90% ownership of the Mumbezhi Project and a substantial A$45 million capital raise, which underpin the company’s exploration momentum.
Notably, the ongoing metallurgical test work on copper, cobalt, and gold composites from Nyungu Central and the Kabikupa deposit is expected to yield preliminary results by May 2026. These studies will be critical in confirming metal recoveries and informing future processing strategies.
Strategic Implications for Mumbezhi
The confirmation of extensive gold mineralisation alongside copper and cobalt marks a strategic pivot for Mumbezhi. As managing director Sam Hosack highlighted, the gold by-product credits could materially reduce Mumbezhi’s operating costs, positioning it more competitively on the global copper cost curve. This is particularly relevant given the project’s location in the prolific Central African Copperbelt, where scale and cost efficiency are paramount.
Prospect’s approach to integrating gold into the resource model and advancing metallurgical understanding parallels its broader exploration strategy, which recently included the unveiling of continuous copper mineralisation at West Mwombezhi, another prospect within the licence area. That discovery, with a maiden resource estimate due in Q2 2026, underscores the company’s potential to build a portfolio of copper and gold assets in the region.
With the Phase 3 drilling program imminent, the market will be watching how these gold results translate into resource upgrades and whether metallurgical recoveries meet expectations, setting the stage for subsequent development studies.
Bottom Line?
Gold’s confirmed presence at Nyungu Central adds a new dimension to Mumbezhi’s value, but upcoming resource updates and metallurgical results will be key to quantifying its true impact.
Questions in the middle?
- How will the final gold assay results from the remaining 26 holes influence the updated resource estimate?
- What recovery rates will metallurgical test work reveal for gold and cobalt alongside copper?
- Can Phase 3 drilling extend gold and copper mineralisation beyond current footprints to materially grow the resource?