Ark Mines Limited has signed a pivotal Memorandum of Understanding to trial processing of monazite ore from its Sandy Mitchell Rare Earths Project, aiming to recover critical minerals including Thorium, Neodymium, and Praseodymium.
- MoU signed for processing trial of monazite ore at Sandy Mitchell project
- Trial to recover Thorium and rare earth elements using low-cost cracking technology
- Processing scope includes chemical analysis and separation of key minerals
- Successful trial could lead to scaled pilot plant and offtake discussions
- Thorium, Neodymium, and Praseodymium critical for energy, technology, and defence
A Strategic Step for Sandy Mitchell
Ark Mines Limited (ASX – AHK) has taken a significant stride forward in developing its Sandy Mitchell Rare Earths Project in Queensland by signing a Memorandum of Understanding (MoU) with a specialist processing technology provider. This agreement sets the stage for a processing trial designed to extract valuable rare earth elements (REEs) and Thorium from monazite ore, a key mineral resource at Sandy Mitchell.
The trial, scheduled to commence in February 2026, will employ a proven, low-cost cracking technology aimed at efficiently recovering Thorium alongside critical rare earth oxides such as Neodymium and Praseodymium. These elements are increasingly vital for sectors ranging from renewable energy to defence, underscoring the strategic importance of Ark Mines’ resource.
Comprehensive Processing and De-Risking
The MoU outlines a comprehensive processing scope that includes initial cracking of monazite ore, followed by detailed chemical analysis and separation chemistry proving campaigns. This integrated approach is designed to optimise reagent use and refine the recovery process, with up to three chemical process variations to be tested for each target mineral.
Ark Mines’ Managing Director, Ben Emery, highlighted the trial’s role in de-risking the project by establishing viable processing pathways. The outcomes will inform downstream development strategies and support engagement with potential end-users and offtake partners, critical steps toward commercialisation.
Market Context and Future Prospects
The timing of this MoU is notable, coming amid heightened global focus on securing reliable supply chains for critical minerals. Neodymium and Praseodymium are essential for manufacturing permanent magnets used in electric vehicles, wind turbines, and military equipment, while Thorium is gaining renewed interest as a potential nuclear fuel alternative.
Should the trial prove successful, Ark Mines and its partner intend to advance toward a scaled pilot plant program, further validating the processing technology and strengthening the project’s commercial prospects. This progression could position Sandy Mitchell as a significant contributor to Australia’s rare earths supply chain and the broader strategic minerals market.
Bottom Line?
Ark Mines’ processing trial could unlock new pathways for rare earths supply, but success hinges on trial outcomes and market engagement.
Questions in the middle?
- Will the processing trial achieve efficient recovery rates for Thorium and rare earth elements?
- What are the commercial terms and potential costs associated with scaling up to a pilot plant?
- How soon could Ark Mines secure offtake agreements following successful trial results?