Acid mine drainage and potentially toxic elements release are a major source of pollution in sulfide-rich mining sites. Pyrite is the most impacting mineral due to its high acidification potential when it reacts with water under oxidizing conditions. At Fushe Arrez dressing plant Northern Albania, volcanic massive sulfide copper district, pyrite was past separated, double flotation process, pro...

The lead–zinc ore is a typical low-grade complex polymetallic sulphide ore. Its mineralogy characterized by high content of cryptocrystalline graphite, low lead, zinc, and copper, fine grain size. However, the aggregation size sulfide mineral aggregations coarse, symbiotic relationship relatively simple. Conventional process treatment requires grinding into monomer dissociations followed prefer...

The massive sulfide deposits (VMS) from Mănăilă are associated with the metamorphic formations of Tulgheș Lithogroup Bucovinian Nappes Crystalline-Mesozoic Zone in Eastern Carpathians, Romania. following types ore were identified: pyrite-polymetallic, pyrite copper, compact and precompact quartz-precompact copper. polymetallic mineralization consists pyrite, chalcopyrite, sphalerite, galena, su...

Research subject. Sulfide-carbonate hydrothermal-bacterial structures on the surface of Tessel paleovolcano lava. Materials and methods. The under study were found during detailed geological works. Petrographic thin sections studied using an Olympus Bx5 microscope. Carbonate sulfide samples examined RZMMA-202M scanning electron Results. For first time, contacts with their enclosing siltstones m...

A recently discovered gastropod (Fig. 1A) differs from all known mollusks by having its foot covered by scales of conchiolin, mineralized with pyrite (FeS2) and greigite (Fe3S4). The animal lives a sedentary life at the base of black-smoker chimneys in the Kairei vent field in the Indian Ocean (1, 2). Its scaly scleritome resembles those characteristic of numerous metazoans (halkieriids, tommot...