Alice Queen’s Project Definition Study for Horn Island reveals robust economics, including a pre-tax NPV of A$706 million and an IRR of 109%, underpinning plans to advance to feasibility stages.
- Life of mine EBITDA estimated at A$1.3 billion
- Pre-tax NPV (8%) of A$706 million with 109% IRR
- 11-year production forecast of ~466,000 ounces gold
- Upfront capital requirement of A$126 million including contingency
- Project finance led by GBA Capital with funding as key risk
Project Economics Signal High Return Potential
Alice Queen Limited (ASX:AQX) has unveiled a Project Definition Study (PDS) for its Horn Island Gold Project in Queensland that paints a compelling economic picture for restarting mining operations. The study estimates a life of mine EBITDA of A$1.3 billion and a pre-tax net present value (NPV) at an 8% discount rate of A$706 million, delivering an internal rate of return (IRR) of 109% based on an assumed gold price of A$6,000 per ounce. After tax, the NPV stands at A$473 million with a still-impressive IRR of 79%. These figures underscore the project's potential for strong shareholder returns if advanced.
The study forecasts production of approximately 466,000 ounces of gold over 11 years, with annual output exceeding 50,000 ounces for the first seven years. Capital expenditure is estimated at A$126 million upfront, including a A$25 million contingency, with total life of mine capital costs reaching A$203 million. Notably, the after-tax payback period is just over one year from production start, highlighting rapid capital recovery.
Resource Base and Mining Approach
The PDS is underpinned by an updated 2026 Mineral Resource Estimate (MRE) comprising 569,000 ounces of gold at a 0.3 g/t cut-off grade, with 71% classified as Indicated and 29% as Inferred Resources. The resource model employs Multiple Indicator Kriging to address the complex, nuggety gold distribution within narrow quartz vein stockworks. The deposit is planned for conventional open-cut mining using hydraulic excavators and rigid-body haul trucks, with a three-stage pit design over seven years of active mining.
Processing will incorporate Tomra X-ray transmission ore sorting for pre-concentration, followed by gravity recovery and Carbon-in-Leach (CIL) circuits. This ore sorting step is pivotal, enabling cost-effective removal of waste material and reducing downstream processing costs. The overall plant gold recovery is estimated at 86.5%, supporting robust project economics.
Funding and Development Pathway
Alice Queen has appointed GBA Capital to lead project financing, with initial funding requirements around A$126 million. The project’s credit metrics are considered bankable, with a pre-tax NPV-to-capex ratio of 5.6x and strong debt-carrying capacity. However, the company cautions that funding availability remains a key risk, and any capital raised may dilute existing shareholders or impact share value. Alternative strategies such as partial sales or joint ventures could also affect ownership stakes.
The PDS serves as a technical and economic foundation to progress the project to Pre-Feasibility or Feasibility Study stages, expected to take 18 to 24 months. These next steps will aim to refine geological confidence, optimize mining and processing parameters, and secure necessary environmental and native title approvals. The project site, previously disturbed by historic mining, offers an opportunity to address legacy environmental impacts through modern rehabilitation practices.
Risks and Uncertainties Remain
Despite the positive economics, the PDS is a preliminary study with cost estimates carrying ±30-35% accuracy and includes a significant proportion of Inferred Resources, which are geologically less certain. The company emphasises that there is no guarantee the production targets will be met, nor that funding and environmental permits will be secured on favourable terms or timelines. Native Title consultations and statutory approvals represent potential bottlenecks, with an indicative 18-month permitting timeline.
Moreover, the project’s sensitivity analysis identifies gold price and processing recovery as the most critical factors influencing outcomes, with a break-even gold price of approximately A$3,709 per ounce, well below current market prices. This provides some cushion against price volatility but also highlights the importance of metallurgical performance.
Community and Environmental Engagement
Alice Queen holds an 84.5% interest in Kauraru Gold Pty Ltd, which owns the project, with the Kaurareg Aboriginal Land Trust holding 7.5% and other shareholders 8%. The company has prioritised engagement with Horn Island and Torres Strait communities, anticipating positive local economic benefits from the project. Environmental management plans align with the Equator Principles, reflecting a commitment to responsible development.
The project’s location benefits from existing transport infrastructure, facilitating logistics. Rehabilitation efforts are planned to address legacy environmental impacts from prior mining activity, which ceased in the late 1980s after underperforming against expected grades.
Bottom Line?
Alice Queen’s Horn Island Gold Project PDS offers a strong economic case but hinges on securing funding and environmental approvals to move beyond preliminary studies.
Questions in the middle?
- Will Alice Queen secure the necessary A$126 million funding on acceptable terms to advance the project?
- How will further drilling and feasibility work impact the confidence in Inferred Resources and overall resource estimate?
- What are the potential timelines and hurdles for environmental permitting and Native Title negotiations?