Maritana Minerals has confirmed robust economics and high-grade drilling results at its Black Swan gold project near Kalgoorlie, backed by a $175 million capital raise and a $35 million asset divestment.
- Black Swan project targets ~102koz gold annually over initial 5 years
- Scoping study delivers $631M pre-tax NPV8 and 83% IRR at A$5,500/oz gold
- High-grade Burbanks drilling hits up to 396.62g/t Au over 1.16m
- Ore Reserves up 160% to 214koz gold, Mineral Resources at 1.88Moz
- $175M equity raise completed; $35M Lake Johnston divestment boosts cash
Black Swan Project Shows Strong Economic Viability
Maritana Minerals (ASX:MRT) has taken a significant step towards near-term gold production with its Black Swan Processing Hub (BSPH) near Kalgoorlie, Western Australia. The company’s recent scoping studies outline a standalone gold development plan targeting an average annual production of approximately 102,000 ounces over an initial five-year mine life. The plan is underpinned by a 2.2 million tonnes per annum processing capacity, leveraging existing Black Swan plant infrastructure to keep pre-production capital expenditure to a relatively modest $160.5 million.
The economics are compelling: at a gold price assumption of A$5,500 per ounce, the project boasts a pre-tax net present value (NPV8) of $631 million, pre-tax free cash flow of $959 million, and an internal rate of return (IRR) of 83%. The payback period is estimated at just 18 months from commissioning, with construction expected to commence mid-2026 and first gold production targeted for mid-2027.
High-Grade Drilling Strengthens Resource Confidence
Supporting the development plan, Maritana reported outstanding results from its Phase 1 diamond drilling program at the 100% owned Burbanks Gold Project. The program, nearing completion with 95% of its 15,000-metre target drilled, has delivered multiple high-grade gold intercepts including an exceptional 396.62 grams per tonne over 1.16 metres and 235.70 grams per tonne over 2 metres. These results reinforce the continuity and high-grade nature of mineralisation, boosting confidence in future mill feed quality for the Black Swan hub.
Consequently, the company updated its Mineral Resource Estimate to 34.32 million tonnes at 1.7 grams per tonne for 1.88 million ounces of gold. More notably, the Gold Ore Reserve has surged 160% to 4.3 million tonnes at 1.54 grams per tonne, equating to 214,000 ounces of contained gold. This uplift follows pre-feasibility studies and re-optimisation work across key deposits including Boorara, Crake, and Kalpini, with maiden reserves declared for Crake and Kalpini.
Capital Raise and Asset Divestment Bolster Financial Position
Maritana fortified its balance sheet with a successful two-tranche capital raising totaling $175 million at $1.08 per share, supported by institutional and high-net-worth investors. A Share Purchase Plan added a further $4.65 million. Post-quarter, the company’s cash position soared to $233.5 million, providing ample funding for the BSPH development and exploration activities.
In parallel, Maritana divested its non-core Lake Johnston nickel asset to Forrestania Resources Limited for $35 million, comprising $30 million in cash and $5 million in shares. The divestment aligns with the company’s focus on gold production and streamlines its portfolio.
Operational Readiness and Leadership Enhancements
Preparations for mining and infrastructure works are well advanced, including early approvals and commencement of front-end engineering design (FEED), long-lead procurement of critical equipment such as thickeners and mill motors, and infrastructure planning. The company appointed Doug Flanagan as Project Director, bringing over 26 years of experience in delivering complex processing plant projects globally. This leadership boost aims to ensure timely and cost-effective project execution.
Meanwhile, the Boorara Gold Project, adjacent to the Kalgoorlie Super Pit, has been placed on care and maintenance following mining completion in December 2025. Substantial ore stockpiles of 460,000 tonnes (14,200 ounces) remain on site and will serve as primary feed during the Black Swan mill’s commissioning phase, mitigating start-up risks.
Broader Portfolio and Market Recognition
Aside from its flagship gold assets, Maritana holds a diversified portfolio including the 20.2 million-ounce Nimbus silver-zinc project and the Mt Thirsty nickel-cobalt project (50% owned). The company’s inclusion in the S&P/ASX All Ordinaries Index marks a milestone, reflecting increased market capitalisation and liquidity, which may attract broader investor interest.
Maritana also rebranded from Horizon Minerals to reduce confusion with similarly named ASX-listed companies, signaling a fresh phase in its corporate identity aligned with its growth ambitions.
Bottom Line?
Maritana’s robust project economics and strengthened balance sheet set the stage for a critical development phase, but execution risks and resource conversion remain key to watch.
Questions in the middle?
- Will Maritana’s high-grade drilling at Burbanks translate into further resource upgrades and reserve conversions?
- How will construction timelines and capital discipline unfold amid current market conditions?
- What is the potential for throughput optimisation beyond the planned 2.2Mtpa processing capacity at Black Swan?