Australian Miner Lynas Buys Brazil’s Largest Non-China Rare Earth Project for $673 Million

Australia’s Lynas Rare Earths, the largest non-Chinese producer of the crucial materials, has acquired Brazil-focused Meteoric Resources in an all-share transaction valued at approximately US$673 million (R$3.5 billion). The deal grants Lynas control over the Caldeira rare earths project in the state of Minas Gerais, which holds the largest known ionic clay rare earth oxide resource outside of China.

The acquisition is a major move that confirms Brazil's emerging role as a key supplier of critical minerals and signals a shift in the global supply chain away from its heavy dependence on China. The Caldeira project, located in the traditional mining heartland of Minas Gerais, is particularly attractive because its resource is an ionic clay deposit, which is typically easier and more environmentally friendly to process than the hard-rock deposits Lynas currently mines in Australia.

A Test for New Brazilian Regulations

Crucially, the deal is the first major test of Brazil’s newly sanctioned Critical Minerals Law. Just weeks before the acquisition was announced, President Luiz Inácio Lula da Silva signed the law, which establishes a National Council for the Industrialization of Critical and Strategic Minerals. This council has the explicit authority to review and potentially veto foreign acquisitions, transfers of mining rights, and international contracts that involve strategic minerals, linking mineral projects directly to national security and industrial policy.

The regulatory framework is part of a broader push by Brasília to ensure that Brazil leverages its vast reserves—the world's second-largest—to build a domestic industrial base rather than simply exporting raw materials. Lynas's acquisition must now navigate this new regulatory landscape, with the government council likely scrutinizing the deal to see if it aligns with the goal of adding value to the rare earths within Brazil.

Shifting the Global Rare Earths Balance

The Caldeira project is poised to become a vital source of key elements like neodymium and praseodymium, which are essential for high-strength permanent magnets used in electric vehicles, wind turbines, and defense technology. Lynas, which operates the only major integrated rare earths processing facility outside of China, is betting that the Brazilian resource will strengthen its position as a reliable alternative supplier for Western economies.

The acquisition allows Lynas to diversify its resource base beyond its Mt Weld hard-rock mine in Western Australia. The company expects the Caldeira project to require over US$500 million in development capital, with first production targeting 2028, further cementing Brazil’s status as an indispensable source of the minerals needed for the global energy transition.

What it Touches

The transaction involves two publicly traded companies, with Meteoric Resources shareholders receiving Lynas shares. In Brazil, the news underscores the increasing value placed on critical mineral assets, which are a major component of the local mining and metals sector. While Lynas does not trade on the B3, the acquisition highlights the growing interest in the segment, which includes players like Sigma Lithium (NASDAQ: SGML), whose operations also center on critical materials production in Minas Gerais.