Aclara Resources heavy rare earths mining in Penco, Chile
The Bio-Bio region, once the focus of the 11th local Rights of Nature Tribunal, has garnered significant attention due to its abundance of critical minerals. This has attracted interest from both national institutions and a host of local and international enterprises exploring the region’s potential. In recent years, the Chilean government has actively promoted mining development, positioning Bio-Bio as a key player in the global energy transition, backed by substantial state investments.
Since 2012, the region has been home to numerous pilot exploration programs, with different projects and companies taking the lead over time. In 2022, the project was transferred to Aclara Resources, a Toronto-based company listed on the Toronto Stock Exchange. Aclara specializes in developing Heavy Rare Earth Elements (HREEs) from ionic clay deposits. Among its flagship initiatives is the “Penco Module,” a project covering more than 600 hectares in the Bio-Bio region. Aclara aims to establish itself as a major supplier of critical HREEs, including Dysprosium (Dy) and Terbium (Tb), which are essential for producing permanent magnets used in renewable energy technologies and electric vehicles (EVs).
However, Aclara’s involvement has sparked considerable opposition from local communities, particularly the Red de Mujeres Penco-Lirquén (Network of Women from Penco-Lirquén). Concerns raised by these groups include a lack of transparency, insufficient public participation, issues with environmental licensing, and fears of environmental and cultural degradation. These unresolved tensions have fueled organized resistance to Aclara’s mining projects in the region.
Witnesses:
Valeria Sepulveda
Valeria Sepúlveda is the president of Corporación Parque para Penco, an NGO dedicated to opposing the mining project and protecting nature through environmental education. She is also an active member of the Penco-Lirquén Women’s Network, an ecofeminist organization based in Penco.
In addition to her leadership roles, Valeria works as an educator and scientific communicator, focusing on socio-environmental restoration. She also serves as a community water quality monitor for the international network Global Water Watch.