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%). It is listed on the Toronto Stock Exchange.
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.
In Brazil Aclara Resources is focused on providing magnetic rare-earth oxides (MREOs) to a magnet production facility in South Carolina, US. The Carina project in Nova Roma, Goiás 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.
In Chile it has since 2016 been developing plans to commercially exploit rare-earth metals nex to Penco. This project, known as Penco Module (Spanish: Módulo Penco), has as of March 2026 its environmental impact assessment under evaluation by the Environmental Assessment Service. If approved the mine is planned to start production in 2028, delivering an average of 811 tons of RRE-oxides annually. In Chile the company has faced accusations of starting the 2026 Chilean wildfires to pave the way for the approval of the Penco Module.