Rare and Critical Metals in Pyrite, Chalcopyrite, Magnetite, and Titanite from the Vathi Porphyry Cu-Au±Mo Deposit, Northern Greece

The Vathi porphyry Cu-Au±Mo deposit is located in the Kilkis ore district, northern Greece. Hydrothermally altered and mineralized samples of latite quartz monzonite are enriched with numerous rare critical metals. present study focuses on bulk geochemistry mineral chemistry pyrite, chalcopyrite, magnetite, titanite. Pyrite chalcopyrite most abundant minerals at related to potassic, propylitic, sericitic hydrothermal alterations (A- D-veins), as well late-stage epithermal overprint (E-veins). Magnetite titanite found mainly M-type veins disseminations potassic-calcic alteration monzonite. Disseminated magnetite also potassic latite, which overprinted by alteration. Scanning electron microscopy laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) analyses pyrite reveal presence pyrrhotite, galena, Bi-telluride inclusions enrichments Ag, Co, Sb, Se, Ti. Chalcopyrite hosts bornite, sphalerite, Bi-sulfosalt In, Inclusions wittichenite, tetradymite, cuprobismutite reflect Te Bi mineralizing fluids. Native gold A- D-type nano-inclusions pyrite. Titanite characterize whereas a major host Ce, Gd, La, Nd, Sm, Th, W.