Prospect Resources has taken its flagship Mumbezhi Copper Project to 208.1 million tonnes, while lifting ownership to 90% and securing A$45 million for the next phase of work. The project remains pre-production, leaving the upcoming Scoping Study and further drilling to convert geological scale into an economic case.
- Mumbezhi resource reaches 208.1Mt at 0.42% copper
- Contained copper rises to 877,100 tonnes
- Gold and cobalt add potential by-product value
- Prospect now owns 90% of Mumbezhi
- Scoping Study targeted for Q4 2026 or Q1 2027
Mumbezhi resource reaches 208.1 million tonnes
Prospect Resources Limited (ASX:PSC) has ended FY2026 with its central investment case substantially larger than it was a year earlier: the Mumbezhi Copper Project in Zambia now carries a global Mineral Resource Estimate of 208.1 million tonnes at 0.42% copper, or 0.49% copper equivalent. The resource contains 877,100 tonnes of copper, 262,100 ounces of gold and 43,500 tonnes of cobalt.
That represents growth of about 94% in total tonnage and 70% in contained copper since Mumbezhi’s maiden resource in March 2025. The latest estimate includes the Nyungu Central, Kabikupa and West Mwombezhi deposits, with all three described as remaining open along strike and down-dip. About 35% of the Nyungu Central resource is classified as Indicated, providing the level of geological confidence Prospect says will support near-term development studies.
Copper growth is being matched by project ownership
Prospect’s exposure to that resource also increased during the year. Following a US$4.25 million cash transaction completed in March 2026, its interest in Mumbezhi rose by five percentage points to 90%. The company spent A$6.057 million on the additional interest, while exploration and evaluation assets increased to A$39.198 million at 30 June.
The funding base was reinforced by a A$45 million placement completed in February at A$0.38 a share. Prospect reported A$36.616 million in cash and a further A$5 million in a 12-month term deposit at year-end, or approximately A$41.6 million combined. That gives the explorer room to continue drilling, although its own accounts identify future equity funding as the material liquidity risk because the group has no producing asset or committed credit lines.
Gold and cobalt could change the development equation
Gold has become a more prominent part of the Mumbezhi story. Prospect re-assayed more than 2,800 existing copper intersections at Nyungu Central and incorporated the results into the latest resource, producing a 106% increase in contained gold compared with the February 2026 estimate. The company says the gold and in-situ cobalt could provide by-product credits, but those potential contributions have not yet been translated into a completed economic study.
Metallurgical work offers a more concrete technical signal. Test work on Nyungu Central and Kabikupa samples produced copper concentrates grading between 24.6% and 32.1%, with reported copper recoveries ranging from 81.4% to 96.2% across the tested composites. The work used conventional flotation and a coarse primary grind, which Prospect says supports the concept of a central processing plant. These are test results from selected samples, not a production forecast.
Phase 3 drilling sets the next resource test
Phase 3 drilling began in May and is intended to extend and upgrade the existing resources at Nyungu Central and West Mwombezhi, test regional prospects including Chipimpa, Sharamba, Kamafamba and Nyungu South, and generate potential maiden resources. The annual report gives two different descriptions of the campaign: approximately 32,000 metres in the Chairperson’s report and approximately 26,000 metres in the operational review. That discrepancy will need to be reconciled as the programme advances.
Prospect says assay results received after year-end have continued to indicate scale potential and opportunities for shallower mineralisation at Nyungu Central and Kabikupa. The company has also increased technical and geological capacity to improve logging, sampling and assay turnaround. Its Scoping Study remains targeted for completion in the fourth quarter of 2026 or the first quarter of 2027, making the conversion of exploration results into mine-planning assumptions the next material test.
Losses and regulatory exposure remain part of the picture
For all the operational momentum, Prospect remains an explorer and developer rather than a producer. The group recorded a net loss of A$7.918 million for FY2026, including A$6.033 million from continuing operations and A$1.885 million from discontinued operations. Operating cash outflow was A$6.704 million, while exploration and evaluation spending reached A$11.434 million before the separate payment for the additional Mumbezhi interest.
The accounts also disclose potential fines of up to ZMW5.24 million, or about A$421,500, under Zambia’s new local-content procurement rules. Prospect has requested that the fines be reversed; management considers a financial payout possible but not probable, so no provision has been recognised. The company is also assessing two non-binding offers for its Omaruru Lithium subsidiary, with final commercial terms still being refined. Neither matter is yet a settled source of cash or a settled cost.
Bottom Line?
Prospect has built a larger, better-funded copper platform, but the investment case now moves from resource growth to proof: the Scoping Study must show whether Mumbezhi’s copper, gold and cobalt can support a viable development.
Questions in the middle?
- Can Phase 3 drilling convert more of Mumbezhi’s Inferred resource into Indicated tonnes without materially diluting grade?
- How much value will gold and cobalt contribute once recoveries, payable credits and processing assumptions are included in the Scoping Study?
- Will the current A$41.6 million cash and term-deposit position fund the next development phase, or will Prospect need to return to equity markets?