The Next Breakthrough in Rare Earths May Be How We Recover Them

The technologies transforming modern industry depend on materials that rarely receive the same attention as the innovations they make possible. Artificial intelligence, robotics, electric vehicles, advanced aerospace systems, and high-performance electronics all rely on sophisticated components whose production requires access to specialized minerals.

Perhaps the most strategically important are rare earth elements, particularly those used in high-performance permanent magnets. And while the technology industry continues pushing the boundaries of what machines can accomplish, another challenge is gaining urgency: finding dependable new sources of the materials needed to manufacture them.

China dominates much of the world’s rare earth processing and magnet production, creating a concentrated supply chain that governments and manufacturers are increasingly determined to diversify.

That effort is directing attention toward resource-rich countries such as Brazil. But discovering new mineral deposits is only part of the solution.

The next important technological advances may come from finding better ways to recover the minerals already being discovered.

Why Rare Earth Recovery Technology Matters

Rare earth elements aren’t necessarily rare in Earth’s crust. The difficulty often lies in identifying deposits with useful concentrations of valuable elements and developing efficient methods to separate and recover them.

Terbium and dysprosium illustrate the challenge. These heavy rare earth elements help certain permanent magnets retain their strength at elevated temperatures, making them valuable in electric vehicle motors, industrial robotics, wind turbines, and aerospace equipment.

For manufacturers, access to these materials is closely connected to product performance and supply reliability. For companies developing new mineral resources, the question becomes how to extract them in ways that are technically practical, environmentally manageable, and potentially commercially viable.

One area attracting attention is ionic adsorption clay, a type of rare earth-bearing deposit in which certain elements can be recovered through chemical leaching.

Unlike conventional hard-rock mining, some ionic clay deposits may offer opportunities to investigate alternative extraction approaches, potentially reducing the amount of material that must be excavated and processed.

And in Brazil, researchers are exploring what those possibilities could mean for future rare earth supplies.

A Brazilian Project Combining Scale With Technical Progress

Among the companies investigating these opportunities is IMC Rare Earths Ltd. (NYSE American: IMC), which is advancing its Itarantim rare earth project across portions of Bahia and Minas Gerais.

Itarantim hosts a reported 1.1-billion-tonne inferred mineral resource containing the four principal magnet rare earth elements: neodymium, praseodymium, dysprosium, and terbium.

That geological scale provides a strong foundation for exploration, but it’s the company’s recent metallurgical testing that adds another dimension to the project.

In September, laboratory work conducted with Brazil’s IFRN and CT Mineral reported terbium recovery reaching 95.2% in the best-performing test, with an average recovery of 81.1% in the reported composite. The company also produced a mixed rare earth carbonate, an intermediate material that can be further processed into separated rare earth products.

Separate research at the University of Brighton in the United Kingdom recovered 73% of the total rare earth elements tested, excluding cerium, using an acidified magnesium sulfate solution. The same testing recovered 71.4% of terbium and 70.5% of dysprosium.

These results were obtained under different laboratory conditions and should not be treated as interchangeable recovery rates. Nevertheless, they show how Itarantim’s mineralization responds to potential extraction methods.

And that information is central to evaluating what comes next.

Could Rare Earths Be Recovered Through Wells?

One of the more intriguing possibilities emerging from testing is in-situ recovery.

Rather than excavating large volumes of rare earth-bearing clay, the proposed method involves injecting a suitable solution through injection wells, letting it interact with the mineralized material, and recovering the resulting rare earth-bearing liquid through extraction wells.

The minerals would then undergo further processing to produce intermediate materials suitable for eventual refining.

If successfully demonstrated under field conditions, this approach could potentially reduce excavation, material transportation, and the need for extensive tailings storage. It might also offer advantages in surface disturbance and infrastructure requirements compared with certain conventional mining methods.

The technology is not yet commercially validated at Itarantim. Field testing must establish whether fluids can move effectively through the deposit, remain controlled, and be recovered reliably.

But the laboratory findings provide a reason to investigate those possibilities further.

Another encouraging observation concerns the composition of the recovered solutions. In the University of Brighton tests, uranium and thorium remained below detection limits in the leachate. IMC has also reported negligible deleterious elements in certain tested solutions.

These results do not establish that the entire deposit is free of radioactivity. They do, however, provide potentially useful information for researchers, regulators, and development partners assessing processing requirements, environmental considerations, and future waste management.

As the technology becomes increasingly focused on efficiency and resource management, those characteristics could become important as testing advances.

New Discoveries Expand the Scientific Questions

While the metallurgical work continues, IMC is also investigating mineralization beyond its existing resource boundaries.

On October 8, the company announced a new high-grade, terbium-rich zone at Block H, where drilling identified seven meters of mineralization beginning just two meters below the surface, including a higher-grade three-meter section.

Preliminary testing recovered 64% to 83% of terbium from samples taken from the upper portion of the enriched zone.

The discovery lies outside Itarantim’s currently defined resource, creating another area for exploration. At Block D, drilling has also identified 20 meters of continuous mineralization, with additional work planned to investigate its extent.

Together, these findings are helping researchers examine both the deposit’s geological characteristics and recovery methods suitable for different mineralized areas.

IMC has engaged ANSTO Minerals in Australia for further metallurgical studies and is evaluating potential processing approaches, including in-situ, vat, and heap leaching.

Next stages will include additional resource definition, engineering evaluation, field testing, and potential partnerships with industrial and government organizations that can support future development.

The Technology Behind a More Diversified Supply Chain

The global effort to diversify rare earth supplies is often discussed in terms of geopolitics and mineral discoveries. Yet processing technology may prove equally important.

A large mineral resource cannot contribute to manufacturing supply chains unless its valuable elements can be recovered, refined, and delivered in forms that industry can use.

That makes the work taking place at projects such as Itarantim relevant beyond the mining sector. Laboratory research, chemical processing, geological modeling, and engineering innovation all support efforts to establish new sources of materials essential to advanced technology.

Brazil’s substantial rare earth potential offers opportunities to continue that work, while international cooperation could connect emerging mineral projects with the processing expertise and infrastructure needed for future supply.

For IMC Rare Earths, the combination of an existing inferred resource, new exploration discoveries, and encouraging laboratory recovery results is providing additional information about Itarantim’s technical possibilities.

And as manufacturers search for more dependable sources of critical minerals, an important part of the solution may come not simply from discovering more rare earths, but from developing smarter ways to recover them.

Because the next generation of technology will depend on innovation not only in the products we build, but in the materials and processes that make those products possible.