Aclara Resources

Aclara Resources is a rare-earth elements company with mining projects in Brazil and Chile and mineral processing projects in the United States. It is a publicly owned company whose major stakes are held by Hochschild Mining (55.9%) and CAP (10.1%).[2] It is listed on the Toronto Stock Exchange.[3]

The mines in Brazil and Chile are planned to supply a rare-earth separator plant that is under construction as of March 2026 in Louisiana in the US.[2] In 2025 the company claimed that by 2028 it expected to supply more than 75% of the US demand of dysprosium (Dy) and terbium (Tb).

The company traces its origins to 2018 when Hochschild Mining purchased 6.2% of the Chilean company BioLantánidos which was owned by the Minería Activa-administered FIP Lantanidos fund of LarrainVial.[7][8] In this initial investment Hochschild Mining obtained an option for further purchases.[9] In 2019 Hochschild Mining gained full ownership of BioLantánidos by buying the remaining 93.8% stakes.[7][10] Later, in 2021 Hochschild Mining rebraded the company to Aclara Resources and inscribed it in the Toronto Stock Exchange.

Brazil

In Brazil Aclara Resources is focused on providing magnetic rare-earth oxides (MREOs) to a magnet production facility in South Carolina, US.[11] The Carina project in Nova Roma, Goiás[12] claimed in November 2025 to be the first HREE (Dy, Tb, Pr, Nr) mining project in the world to declare reserves hosted in ionic clays.[13]

Chile

In Chile BioLantánidos, the predecessor of Aclara Resources, begun in 2016 plans to commercially exploit rare-earth metals nex to Penco.[2][14] This project, known as Penco Module (Spanish: Módulo Penco), had as of March 2026 its environmental impact assessment under evaluation by the Environmental Assessment Service.[2] If approved the mine is planned to start production in 2028,[15] delivering an average of 811 tons of RRE-oxides annually.[2] In Chile the company has faced accusations of starting the 2026 Chilean wildfires to pave the way for the approval of the Penco Module.[15][16]

Hochschild Mining claimed in 2019 that no use of explosive will be needed for the extraction of REEs, whose mineralizations reportedly does not go deeper than 20 to 30 m below the ground.[9]

United States

In the United States the company is building a REE plant in the Port of Vinton which is part of "a wave of North American investment in rare earths separation, processing and magnet manufacturing". Aclara Resources has co-developed technology with Virginia Tech.[17]