A big rare earth deposit is one thing. A funded, permitted and built rare earth project is another.
Mont Royal Resources (ASX:MRZ) has now put fresh numbers around the gap between the two. The company’s updated Preliminary Economic Assessment for the Ashram Rare Earths and Fluorspar Project in Québec sketches out a 30-year rare earth development with a post-tax net present value of C$2.03 billion, a post-tax internal rate of return of 22.0% and a payback period of 3.9 years from the start of production.
The number that sits underneath all of it is harder to ignore: C$1.23 billion.
That is the initial capital estimate, excluding the access road and including a 30% contingency. Mont Royal says access infrastructure costs are assumed under a contracted or shared logistics model and reflected in operating expenditure, rather than carried directly in the upfront capital line.
The study moves Ashram out of the abstract
Ashram was already known for scale. The project hosts an indicated resource of 73.2Mt at 1.89% TREO and 6.6% CaF₂, plus an inferred resource of 131.1Mt at 1.91% TREO and 4.0% CaF₂. The company also points to an NdPr distribution of about 21%, which matters because neodymium and praseodymium are the magnet-feed rare earths that investors tend to track most closely.
The updated PEA gives that geology a production shape. Mont Royal models average annual output of about 17,466 tonnes of saleable rare earth oxide, including about 4,035 tonnes of Nd₂O₃ and Pr₂O₃, plus smaller volumes of dysprosium, terbium and yttrium oxides. The plan uses only 25% of the current global resource in the base case, according to the company.
That last detail is the part that will attract attention. It lets Mont Royal argue that Ashram is not just a single-mine plan, but a long-duration platform.
The market will still ask a plainer question: how much of that platform can be converted into bankable value?
The fluorspar thread is more than a side note
The rare earth story is the headline, but fluorspar keeps becoming harder to treat as background noise.
In May, Mont Royal reported high-grade fluorspar at the Mallard Prospect, about 1.4km south-east of Ashram, including previous drilling results with grades up to 39.8% CaF₂. Earlier that month, the company said Ashram’s existing resource already contained a significant fluorspar component and that test work was continuing.
The new PEA does not appear to make fluorspar the centre of the base case. Instead, Mont Royal describes a potential dedicated fluorspar recovery circuit as future upside. That is sensible sequencing. Investors can track the rare earth case first, then decide whether the fluorspar work adds a second economic layer or remains a useful geological footnote.
The path now runs through partners
The updated PEA says the proposed development would include on-site concentration at Ashram and downstream hydrometallurgical processing in Saguenay, Québec. Mont Royal says the approach is designed to improve execution certainty, reduce development complexity and fit with Canadian critical minerals policy.
That is the strategic case. The practical case is more demanding.
Mont Royal’s own cautionary language is clear. The PEA is preliminary, has an accuracy level of plus or minus 50%, does not support an ore reserve, and does not provide certainty that the project will be developed. The company also notes that the required funding may be dilutive if raised through equity, and that alternative paths such as a sale, partial sale or joint venture could reduce Mont Royal’s eventual project ownership.
This is where Ashram becomes interesting in a different way. The study is not just a valuation document. It is a calling card for government agencies, strategic investors, offtake groups and possible downstream partners.
What investors may watch from here
The next phase is less about headline scale and more about proof.
Mont Royal says the next steps include moving toward a Pre-Feasibility Study, targeted to begin in the second half of calendar 2026, while continuing metallurgical optimisation, engineering work, environmental baseline studies, permitting, stakeholder engagement and discussions around offtake and strategic partnerships.
That gives investors a cleaner scorecard than the resource alone. Watch whether the PFS path begins on schedule. Watch whether the capital number tightens or drifts. Watch whether government support and industry interest turn into specific agreements rather than broad alignment. Watch whether fluorspar earns a place in the economics.
Ashram now has a fresh PEA and a much sharper market frame. The deposit is large. The study is serious. The next chapter is about whether Mont Royal can turn strategic relevance into a financeable project.
