Exploration Target Highlights Potential at Tannenberg

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Stock Greenx Metals Ltd (GRX.ASX)
Release Time 28 May 2026, 8:21 a.m.
Price Sensitive Yes
 Greenx Metals Announces Exploration Target at Tannenberg
Key Points
  • Potential mineralisation estimated at 144 - 279 Mt with 1.3 - 3.9 Mt Cu and 69 - 188 Moz Ag
  • Modern view captures mineralisation in hanging wall and footwall
  • Validated by historical mining in Poland showing similar mineralisation
  • Transitioning from archive data synthesis to active exploration
Full Summary

Greenx Metals Limited (ASX:GRX) has announced an Exploration Target at the Tannenberg Copper Project in Germany, indicating a potential for large-scale copper-silver mineralisation. The Exploration Target estimates a range of 144 - 279 million tonnes at 0.9% - 1.4% copper and 15 - 21 grams per tonne silver, potentially containing 1.3 - 3.9 million tonnes of copper and 69 - 188 million ounces of silver. This target is based on a modern understanding of the Kupferschiefer deposit model, capturing mineralisation in both the hanging wall and footwall of the Kupferschiefer shale, unlike previous estimates that only considered the shale horizon. The Exploration Target builds on validated historical foundations, including historical estimates from the 1940s and 1980s, and has been validated by resampling and logging of archived core. Greenx is now transitioning to active exploration, including metallurgical test work, seismic surveys, and an initial drill program.