Brazilian Rare Earths Rocha da Rocha Scoping Study Shows US$7.9bn NPV and Low-Cost Heavy Rare Earths Production

• Ultra-high-grade Monte Alto deposit averaging 11.3% TREO
• After-tax NPV8 of US$7.9 billion and IRR of 89%
• Hub-and-spoke model with centralized processing at Camaçari
• Forecast 5,276 tonnes NdPr oxide and 2,253 tonnes heavy rare earth concentrate annually
• Potential upside from uranium, scandium, niobium, tantalum co-products

Rocha da Rocha Emerges as a Rare Earth Powerhouse

Brazilian Rare Earths Limited (ASX:BRE) has unveiled a scoping study that positions its Rocha da Rocha Rare Earths Province in Bahia, Brazil, as a globally significant rare earth development with standout economics. Central to the project is the Monte Alto deposit, boasting an average total rare earth oxide (TREO) grade of 11.3%, a figure that towers over established Western projects like Mountain Pass and Lynas.

This grade advantage translates into a lower mining footprint, reduced material handling, and a simpler processing route, key factors that underpin the project's first-quartile cost position. The scoping study forecasts an after-tax net present value at an 8% discount (NPV8) of US$7.9 billion, an internal rate of return (IRR) of 89%, and a rapid payback of just over one year under Argus EU/US price forecasts.

Integrated Hub-and-Spoke Development Model

BRE’s development strategy hinges on a hub-and-spoke model that pairs low-footprint mining and beneficiation at Monte Alto and the Sulista district with centralized hydrometallurgical processing at the Camaçari Petrochemical Complex. This industrial hub offers established infrastructure, utilities, skilled labour, and logistics advantages, allowing BRE to avoid complex chemical processing at the mine sites.

The Monte Alto mine will use dry crushing, screening, and sensor-based ore sorting to produce a high-grade concentrate, which will be trucked approximately 260 kilometres to Camaçari. Sulista, located about 80 kilometres southwest of Monte Alto, complements the feed with a larger, district-scale resource, extending the mine life to 14 years.

Strategic Product Suite with Heavy Rare Earth Focus

The project targets production of separated neodymium-praseodymium (NdPr) oxide and a heavy rare earth-rich concentrate containing dysprosium, terbium, yttrium, gadolinium, and samarium. Over the life of mine, average annual production is forecast at 5,276 tonnes of NdPr oxide and 2,253 tonnes of heavy rare earth concentrate, including 247 tonnes of DyTb and 989 tonnes of yttrium, volumes that position BRE as a potential leading supplier in these supply-constrained markets.

While uranium recovery is integrated into the flowsheet, the scoping study conservatively excludes uranium revenue from the base-case economics due to regulatory uncertainties. However, uranium production averaging 362 tonnes per annum could rank BRE among the world’s top 15 uranium producers, representing a significant potential upside. Similarly, future value opportunities exist in scandium, niobium, tantalum, and titanium co-products, which are not yet factored into the economic model.

Robust Technical Foundation and Permitting Progress

Extensive metallurgical testwork confirms high recovery rates, sensor-based ore sorting at Monte Alto achieves approximately 97% TREO recovery, while flotation and gravity separation at Sulista deliver recoveries above 90%. The low-temperature sulphuric acid curing process at Camaçari reduces reagent consumption and energy intensity compared to conventional monazite processing.

Permitting advances include a trial mining licence for Monte Alto, environmental impact assessments underway, and final operating authorisation for BRE’s pilot plant at Camaçari. The company has also secured a binding 10-year heavy rare earth offtake agreement with Carester, providing a European market pathway for its heavy rare earth concentrate.

Funding and Next Steps

Upfront capital expenditure is estimated at US$969 million, including a 30% contingency and dedicated reagent production facilities. BRE anticipates that funding can be secured through a mix of equity, debt, strategic partnerships, and offtake-linked financing, supported by its strong cash position and market capitalization. Deferred capital of approximately US$685 million is expected to be funded from project cash flows.

The company plans to advance the project through pre-feasibility and feasibility studies, targeting a final investment decision by mid-2029 and first production in 2031. An early-stage fast-track option to commence concentrate sales from Monte Alto as soon as 2030 is also being evaluated, potentially providing early cash flow ahead of refinery commissioning.

Exploration Upside and Industry Positioning

Beyond the current resource base, BRE’s exploration pipeline is extensive. The Monte Alto deposit remains open along strike and at depth, with the Velhinhas corridor recently defined over more than 9 kilometres of prospective strike. Sulista offers a district-scale growth platform with multiple exploration targets, while the Pelé district represents an emerging high-grade opportunity.

The company’s combination of ultra-high grades, strategic heavy rare earth exposure, integrated processing, and strong infrastructure support distinguishes Rocha da Rocha as a potential cornerstone supplier for the Western rare earth market, particularly for critical heavy rare earths that remain supply-constrained globally.

Bottom Line?

Rocha da Rocha’s scoping study sets a high bar with robust economics and a clear development path, but advancing through feasibility and securing funding remain critical hurdles before production can begin.

Questions in the middle?

• How will BRE navigate the regulatory and commercial complexities of uranium co-product sales in Brazil?
• What are the implications of the significant proportion of Inferred Resources on project risk and financing?
• Can the fast-track Monte Alto concentrate sales pathway be successfully commercialized to accelerate cash flow?