Tannenberg Acquisition Boosts GreenX but Resource Confirmation Still Pending

Strategic Acquisition and Expansion

GreenX Metals Limited has taken a decisive step forward by completing the acquisition of a 90% interest in Group 11 Exploration GmbH, the holder of the Tannenberg Copper Project licences in Germany. This move follows a series of announcements throughout 2025 and significantly expands GreenX’s footprint in a historically productive mining region. The project area has grown from 272 km² to an impressive 1,900 km², a seven-fold increase that opens up vast new exploration potential.

The Tannenberg Project’s location within Germany, a country with a long-standing mining tradition and robust infrastructure, positions it well to contribute to Europe’s critical minerals supply chain. GreenX’s CEO, Ben Stoikovich, highlighted the project’s scale, geological promise, and alignment with EU and German strategic priorities, particularly as copper is now designated a Strategic Raw Material under the EU Critical Raw Materials Act.

Historical and Modern Data Validate Potential

GreenX’s exploration work has uncovered significant historical data, including a 1940 estimate identifying 728,000 tonnes of contained copper at an average grade of 2.6%. This estimate, based on drilling campaigns from the 1930s, focused narrowly on the Kupferschiefer horizon but did not account for by-product metals. A 1984 independent study further validated these findings, revealing consistent copper grades alongside substantial silver by-products.

Importantly, GreenX’s recent modern assays have confirmed thicker mineralised intervals than previously recognised, with some intervals reaching up to 3.7 metres and copper grades exceeding 2.7%. These results support the company’s hypothesis that mineralisation extends beyond the traditional Kupferschiefer shale, mirroring similar geological settings in nearby Poland.

Favourable Policy Environment and Market Context

The timing of GreenX’s acquisition coincides with a surge in European policy initiatives aimed at securing domestic sources of critical raw materials. The EU’s Critical Raw Materials Act now facilitates accelerated permitting and preferential funding for projects like Tannenberg. Germany’s Raw Materials Fund has already demonstrated tangible support, exemplified by a €150 million investment in Vulcan Energy’s lithium project.

Germany’s copper-intensive industries, including automotive and electrical sectors, are driving increased demand for secure and environmentally responsible copper supplies. This backdrop enhances the strategic relevance of the Tannenberg Project and underscores GreenX’s potential role in Europe’s energy transition and industrial resilience.

Next Steps and Exploration Outlook

With the acquisition now complete, GreenX is advancing a comprehensive exploration program. This includes re-assaying historical drill cores, reprocessing geophysical data, and digitising extensive geological archives. The company plans twin drilling campaigns to verify historical estimates and establish a JORC-compliant mineral resource.

While the historical estimates provide a promising foundation, GreenX acknowledges that further work is needed to fully delineate the project’s scale and economic potential. The coming months will be critical as the company seeks to translate its extensive data into a robust resource model and advance the project towards feasibility.