GreenX Metals, a copper-silver developer with projects in Germany, has completed an early-stage mineralogy study at its Tannenberg Copper Project that confirms the deposit's mineralisation is consistent with operating Kupferschiefer mines in Poland.
The study, carried out by SGS Canada at its Lakefield facility on ten historical drill core samples, found copper is predominantly hosted in chalcocite, with additional bornite, chalcopyrite and covellite, mineralogy typical of Kupferschiefer deposits.
An independent metallurgical review by MSA Mining Consulting UK concluded that Tannenberg is potentially well suited to conventional flotation processing, the same approach used at KGHM's Polish operations, which treat 30 million tonnes per annum at 1.6% copper and 45 grams per tonne silver, achieving recoveries of approximately 89% copper and 86% silver.
The study identified a bi-modal copper sulphide grain size distribution, with both coarse particles above 25-30 microns and very fine material below 5-10 microns, a characteristic that will inform grinding and flotation circuit design.
The independent consultant noted that modern technologies including high-pressure grinding rolls and advanced fine-particle flotation systems could potentially deliver recoveries comparable to, or better than, Polish analogues.
The next step is scoping-level metallurgical testwork on representative samples from each mineralised lithology.
"This gives us confidence that Tannenberg appears to have the right ingredients to follow a proven development pathway," said Chief Executive Ben Stoikovich.
