Acquisition of the Tannenberg Copper Project

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Stock Greenx Metals Ltd (GRX.ASX)
Release Time 12 Dec 2025, 8:19 a.m.
Price Sensitive Yes
 GreenX Completes Acquisition of Tannenberg Copper Project
Key Points
  • Historical estimate of 728,000 tonnes of contained copper at 2.6% grade
  • Initial assays validate historical grades and confirm wider mineralization
  • Project area expanded seven-fold to 1,900 km²
  • Supportive policy environment in Europe and Germany for domestic copper supply
Full Summary

GreenX Metals Limited has completed the acquisition of the Tannenberg Copper Project in Germany, a strategically timed opportunity with significant scale, prospectivity, and low sovereign risk. The project has seen substantial progress since GreenX entered the joint venture agreement in 2024, including a seven-fold expansion of the license area to 1,900 km² and validation of historical high-grade copper estimates. Key highlights include a 1940 historical estimate of 728,000 tonnes of contained copper at an average grade of 2.6%, which has been further validated by a 1984 independent estimate. Initial assay results from the ongoing relogging and re-assaying program have confirmed the presence of thicker mineralized intervals than previously recognized, providing support for GreenX's exploration hypothesis that the system extends well beyond the Kupferschiefer shale. The project's strategic location within a historically productive mining region, coupled with the supportive policy environment in Europe and Germany for securing domestic critical mineral supply, position Tannenberg as a key asset in GreenX's portfolio. Both Germany and the wider EU have made significant strides in 2025 to accelerate the development of strategic raw materials, with copper now formally designated as a Strategic Raw Material under the EU Critical Raw Materials Act. This has translated into direct financial support, such as the recent €150 million German government investment into Vulcan Energy's lithium project, reinforcing the strategic relevance of advancing a large-scale copper project in Germany at this time. GreenX remains focused on further advancing the Tannenberg Project through ongoing exploration activities, including core logging, assaying, and geophysical data analysis, as well as twin drilling to establish a JORC-compliant mineral resource estimate.

Outlook

GreenX intends to undertake more targeted exploration activities over the next 12 months or so to begin delineating the true potential of the Tannenberg Copper Project, which the company believes has district-scale potential across the vastly expanded license area.