Prospect Resources Limited (ASX: PSC, FRA: 5E8) (“Prospect” or, the “Company”) has reported a strong June 2026 quarter, highlighted by a substantial expansion of the Mineral Resource Estimate (MRE) at its flagship Mumbezhi Copper Project in Zambia, encouraging near-surface copper results at West Mwombezhi, further evidence of gold by-product potential and high-quality copper concentrate testwork at Kabikupa.
Figure 1: Mumbezhi mining licences highlighting known deposits and delineated prospects against airborne electromagnetic geophysical data (Time Derivative – Mid Time). [Prospect Resources]
The Company also commenced an expanded Phase 3 drilling programme designed to unlock further resource growth and advance Mumbezhi towards a Scoping Study targeted for Q4 2026/Q1 2027.
Prospect entered the second half of 2026 with approximately A$36.6 million in cash, or A$41.6 million including a A$5 million 12-month term deposit, and zero debt.
Figure 2: Prospect Resources’ Mumbezhi Copper Project location map [Prospect Resources]
Mumbezhi MRE grows 20% to 208.1Mt
The latest MRE represents one of the quarter’s key milestones for Prospect.
The updated Indicated and Inferred resource now stands at 208.1 million tonnes at 0.42% copper and 0.49% copper equivalent (CuEq). The update represents a 20% increase in tonnage, alongside a 14% increase in contained copper and a 106% increase in gold compared with the February 2026 MRE.
| Mumbezhi MRE | Updated Resource |
|---|---|
| Total Resource | 208.1Mt |
| Copper Grade | 0.42% Cu |
| Copper Equivalent | 0.49% CuEq |
| Contained Copper | 877,100t |
| Contained Cobalt | 43,500t |
| Contained Gold | 262,100oz |
The resource covers three deposits: Nyungu Central, Kabikupa and West Mwombezhi. Nyungu Central remains the largest component, with 154.4Mt at 0.42% Cu, while Kabikupa contributes 23.0Mt at 0.48% Cu and West Mwombezhi adds 30.7Mt at 0.37% Cu.
Prospect also highlighted the resource’s growth potential, with all three defined MREs remaining open along strike and down-dip.
Managing Director and CEO Sam Hosack said the updated resource had strengthened the Company’s value proposition at Mumbezhi.
“Prospect has delivered a significant step-up in the value proposition at Mumbezhi over the June quarter, with a further update to the MRE.”
Mr Hosack also pointed to the importance of the gold re-assaying programme, saying it demonstrated that gold mineralisation at Nyungu Central was “both more extensive and consistent than previously understood”.
West Mwombezhi delivers shallow copper growth potential
Prospect continued to build its understanding of West Mwombezhi during the quarter, with diamond drilling defining continuous, near-surface copper sulphide mineralisation over more than 1km of strike.
The mineralisation remains open towards the west and south, while soil sampling has identified strong copper anomalism extending for more than 1km south of existing drilling.
Several notable intersections from the programme included:
- 8.9m at 0.78% Cu from 54.6m, including 7.0m at 0.93% Cu from 54.6m.
- 6.7m at 0.57% Cu from 86.0m, including 4.2m at 0.75% Cu.
- 5.8m at 0.44% Cu from 145m.
- 5.0m at 0.47% Cu from 85m, including 2.7m at 0.78% Cu.
Figure 3: West Mwombezhi map showing strong Cu/Sc anomalies trending south and west from the existing diamond drilling, highlighting areas of potential copper mineralisation. [Prospect Resources]
Post-quarter-end aircore drilling also identified two new coherent, near-surface copper anomalies directly west of the existing West Mwombezhi Inferred MRE. Each zone extends for more than 1km and remains a target for follow-up drilling at depth.
Gold adds potential by-product value
Prospect’s re-assaying programme at Nyungu Central has also strengthened the project’s multi-commodity proposition.
The Company re-assayed more than 2,800 existing copper drill-hole intersections for gold during the first quarter of 2026. The results demonstrated widespread gold mineralisation within previously reported copper intercepts.
Notable results included:
| Hole | Gold Intersection |
|---|---|
| NYDD062 | 23.1m @ 0.55 g/t Au from 82.9m |
| NCRD008 | 29.0m @ 0.22 g/t Au from 47m |
| NYDD064 | 27.7m @ 0.21 g/t Au from 172m |
| NCMT002 | 21.0m @ 0.19 g/t Au from 74m |
| NCDD010 | 7.3m @ 0.41 g/t Au from 20m |
Prospect believes the widespread gold, alongside in-situ cobalt, could potentially provide by-product credits and improve the economics of a future Mumbezhi operation.
Mr Hosack said the opportunity could potentially reduce the net copper unit cash cost profile of any future operation.
Figure 4: Table presenting the Mumbezhi Copper Project Mineral Resource at a 0.2% Cu cut-off grade. [Prospect Resources]
Phase 3 drilling targets resource expansion
Prospect has now commenced its expanded Phase 3 drilling campaign, which represents a major exploration workstream for the remainder of 2026.
The programme comprises approximately 26,000m of drilling, including:
- 60 diamond drilling holes;
- 30 reverse circulation holes; and
- 320 scout aircore holes.
The Company will focus on the Nyungu Hub, including step-out drilling at Nyungu Central, testing of Nyungu West and a priority geophysical conductor northeast of Nyungu South.
It will also test regional targets including Kamafamba, Sharamba, Chipimpa, Kasombo, Shikezi and Chalamba.
Mr Hosack highlighted the scale of the exploration opportunity, noting that the Chipimpa and Sharamba electromagnetic conductor targets each exceed 2km of strike and display characteristics comparable with Nyungu Central.
Figure 5: Aircore drilling underway at West Mwombezhi. [Prospect Resources]
Kabikupa testwork strengthens processing case
Metallurgical results from Kabikupa provided another positive development during the quarter.
Testing produced copper concentrates grading 31.9% Cu at 94.7% recovery from transition material and 25.0% Cu at 94.3% recovery from low-grade fresh material, with only one cleaning stage.
The programme also successfully used a coarse primary grind size of P80 250µm, which Prospect said could have positive implications for future plant capital and operating costs.
Mr Hosack said the results “strengthen our confidence in the potential economic viability of a future operation at Mumbezhi” and support the progression of the project into the next stage of technical studies.
Figure 6: Kabikupa drill plan showing the location of the dedicated metallurgical testwork drill hole. [Prospect Resources]
Strong balance sheet supports exploration
Prospect finished the quarter with A$36.6 million in cash and zero debt, while its cash position rises to approximately A$41.6 million when the A$5 million term deposit is included.
The quarterly cash flow statement reported net operating cash outflows of A$1.5 million and investing cash outflows of A$2.29 million, while financing activities generated A$6.78 million during the quarter.
Prospect has also pared back exploration expenditure at its 100%-owned Omaruru Lithium Project in Namibia to minimum holding commitments while it considers potential commercialisation strategies.
Investors’ Outlook
Prospect Resources enters the second half of 2026 with its investment case increasingly centred on the scale, growth potential and development pathway of Mumbezhi.
The 208.1Mt MRE, continued open-ended mineralisation, emerging gold by-product opportunity and strong Kabikupa metallurgical results provide several catalysts for investors to monitor. The expanded Phase 3 programme could further increase resources and improve confidence in existing Inferred Resources, while regional drilling could potentially establish additional mineralised zones.
The Company’s next major milestone remains the Mumbezhi Scoping Study, targeted for Q4 2026/Q1 2027. Prospect plans to support this work with further drilling, metallurgical testing and technical studies.
For context, below is the share price performance of Prospect Resources as of 29th July 2026, as at 12 pm AEST:
| Share Price Activity (ASX) | Performance |
|---|---|
| Last Price | A$0.24 |
| 1-Year Performance | +29.73% |
| Performance vs ASX 200 (1 Year) | +25.84% |
| Market Capitalisation | A$199.86 million |
The stock has gained 29.73% over the past year, compared with a 25.84% gain for the ASX 200 over the same period.
The key question for investors now is whether continued exploration success can translate Mumbezhi’s growing resource base into a technically and economically compelling development proposition. With Phase 3 drilling underway and results expected progressively throughout H2 2026, the coming quarters could prove pivotal for Prospect’s next stage of growth.
Disclaimer
This article has been prepared by Colitco in collaboration with Prospect Resources as part of a commercial content and investor communications arrangement. Colitco may receive compensation for the production and distribution of this content. This article is intended for informational purposes only and does not constitute financial product advice, investment advice, or a recommendation to buy or sell any securities. The content reflects information available at the time of publication and may not be updated. All figures, data and statements have been sourced from Prospect Resources’ official ASX announcements and publicly available sources. Readers should conduct their own independent research and seek professional financial advice before making any investment decisions. Past performance is not a reliable indicator of future results. Exploration results are not a guarantee of future resource definition or commercial production.
Elizabeth Jones is a finance and mining content specialist with over 10 years of experience creating clear, SEO-driven content across fintech, investing, banking, insurance, cryptocurrency, and resource markets. She transforms complex financial data and industry trends into engaging, reader-focused articles that improve understanding and audience engagement.
