This Rare Earth Project Revealed a Potential of $1.4 Billion for Brazil and Capacity to Meet Up to 15% of Global Demand

Written by Bruno Teles

Published on 02/06/2025 at 09:43

Projeto Caldeira: Meteoric Resources investe R$1,1 bi em terras raras em Caldas (MG). Conheça o potencial, a produção e os desafios socioambientais

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With R$ 1.1 Billion Investment, Meteoric Resources Plans to Extract Rare Earths in Caldas (MG), Promising High Production but Facing Scrutiny from the Local Community

The Caldeira Project, led by the Australian mining company Meteoric Resources in Caldas, Minas Gerais, emerges as a significant economic potential initiative for Brazil in the rare earth sector. With a announced investment of R$ 1.1 billion over three years, the project aims to explore vast deposits of ionic clay, rich in these critical minerals.

The prospect is to supply 10% to 15% of the global Rare Earth Elements (REE) market and generate 700 direct jobs, with extraction expected to begin in 2027. However, the venture faces significant socio-environmental concerns from the local community, especially regarding water impacts and the risk of radioactive contamination.

The Caldeira Project, A New Frontier in Brazil and Its Outlines

The Caldeira Project is located in Caldas, in the southwest of Minas Gerais, within the Poços de Caldas Alkaline Complex, a mineral-rich region. The Meteoric Resources NL, an Australian company, holds 100% of the project and focuses on the exploration of ionic adsorption clays (IAC), geologically similar to deposits in southern China, but with potential for higher grades.

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The Strategic Relevance of the Rare Earths from the Caldeira Project for the Global Market

This Rare Earth project revealed a potential of US$1.4 billion for Brazil and capacity to supply up to 15% of global demand

The investment in the Caldeira Project is estimated at R$ 1.1 billion. Financial projections are robust, with a Net Present Value (NPV) of US$ 1.4 billion and an Internal Rate of Return (IRR) of 40.4%. The mineral resources are vast, estimated between 1.1 and 1.5 billion tons with an average grade of 2,359 to 2,413 ppm of Total Rare Earth Oxides (TREO).

The project aims to generate 700 direct jobs and aims to supply 10% to 15% of the global rare earth market, positioning Brazil as a strategic alternative to China. The initiative already has the support of the EXIM Bank of the USA and a Memorandum of Understanding with Neo Performance Materials.

Environmental Profile and Challenges in Extraction in Caldas

The extraction of ionic clay at the Caldeira Project is presented as low-impact, without the need for drilling or blasting, without tailings dams, using dry stacking and pit filling. Meteoric Resources claims that the process will not produce significant radioactive waste.

However, the Caldas region has a history of uranium mining, which raises local concerns about the possible presence of naturally occurring radioactive materials (NORM) and water contamination. The management of water resources and detailed assessment of NORM, under the supervision of CNEN, are crucial. The Environmental Impact Study (EIA) was submitted in May 2024.

The Community of Caldas and the Rare Earths Project

The population of Caldas expresses concern regarding impacts on water, public health, and potential radioactive contamination. There is a call for greater public participation in the environmental licensing process, currently in its early stages.

Meteoric Resources claims to have “supportive community engagement” and a “community acceptance level of 89%,” based on a social mapping. However, the depth of these concerns and the legacy of uranium mining in the region require ongoing and transparent dialogue to build a genuine social license to operate.

Balancing Opportunities and Risks in Rare Earth Mining

The Caldeira Project received “high priority” status from the state government of Minas Gerais, which may expedite approvals. Environmental licensing is under the responsibility of SEMAD, water granting by IGAM, and NORM oversight by CNEN.

The project’s success will depend on Meteoric’s ability to balance the potential economic return with exemplary socio-environmental management. Addressing local concerns is essential. The venture could become a case study for rare earth mining in Brazil, but it requires a firm commitment to sustainability and shared value with the community.

This Rare Earth Project Revealed a Potential of $1.4 Billion for Brazil and Capacity to Meet Up to 15% of Global Demand

With R$ 1.1 Billion Investment, Meteoric Resources Plans to Extract Rare Earths in Caldas (MG), Promising High Production but Facing Scrutiny from the Local Community

The Caldeira Project, A New Frontier in Brazil and Its Outlines

The Strategic Relevance of the Rare Earths from the Caldeira Project for the Global Market

Environmental Profile and Challenges in Extraction in Caldas

The Community of Caldas and the Rare Earths Project

Balancing Opportunities and Risks in Rare Earth Mining

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This Rare Earth Project Revealed a Potential of $1.4 Billion for Brazil and Capacity to Meet Up to 15% of Global Demand

With R$ 1.1 Billion Investment, Meteoric Resources Plans to Extract Rare Earths in Caldas (MG), Promising High Production but Facing Scrutiny from the Local Community

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The Community of Caldas and the Rare Earths Project

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