GreenX Metals (ASX:GRX) completed an early-stage mineralogy and processing study for its Tannenberg copper project in Germany, according to a Wednesday Australian bourse filing.

The study showed that the copper is predominantly hosted in chalcocite with additional bornite, chalcopyrite, and covellite, typical of Kupferschiefer mines in Poland, and that Tannenberg mineralization is consistent with producing Kupferschiefer copper-silver mines.

A review by an independent metallurgist from MSA Mining Consulting UK confirmed the potential suitability for a conventional flotation-based processing route, as used at KGHM's operations.