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GreenX Metals (ASX:GRX) has slated an expansion of its Tannenberg Copper Project in Germany, ramping up the project area to 1,900 square kilometres, a substantial boost from the original 272 square kilometres.

The ramp-up’s scope includes a new region with additional historic drill intercepts, boosting the project’s potential for sediment-hosted copper deposits, specifically Kupferschiefer type.

The expanded project comprises two key parts: the extension of the original Tannenberg exploration licence (Tannenberg 1) for another three years and the deployment of a new exploration licence (Tannenberg 2), covering 1,628 km2, also valid for three years, with the prospect of a further extension.

GreenX holds a 90% interest in the project through an earn-in agreement and has attracted attention from BHP, which selected it as one of eight early-stage exploration projects for its 2025 BHP Xplor program.

Funding from this collaboration is being used to accelerate the geological exploration and concept development, including work in the newly expanded licence area.

The new area has already revealed positive drill results, including intercepts of 0.69m at 3.1% Cu and 31.7ppm Ag from 378m depth, and 2.2m at 0.9% Cu and 23.1ppm Ag from 378m.

GreenX CEO Ben Stoikovich says the similarity between the newly expanded area and the Kupferschiefer-style geology found in the historically significant Richelsdorf mining district.

GreenX has highlighted an extensive work program for this year, including the relogging and reassaying archived core, conducting airborne magnetic and radiometric surveys, and collecting additional geophysical and gravity data to further refine exploration targets.

Greenx Metals has been trading at 74.5 cents at the time of writing.

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