• Fe isotopes were variable in ferruginous rocks during and after Kuroko formation. Anoxic pools Hokuroku Basin may have facilitated preservation of sulfide ores. Prominent Eu anomalies indicate association with VMS deposits. Zn-rich black ores are negatively shifted due to a kinetic effect. Duration hydrothermal circulation is primary control on ore grade tonnage. seawater played an important ...

Fossil worm tubes of Cretaceous age preserved in the Bayda massive sulfide deposit of the Samail ophiolite, Oman, are apparently the first documented examples of fossils embedded in massive sulfide deposits from the geologic record. The geologic setting of the Bayda deposit and the distinctive mineralogic and textural features of the fossiliferous samples suggest that the Bayda sulfide deposit ...

The presence of anglesite (PbSO4) in complex sulfide ores negatively affects the separation Cu-Pb sulfides and sphalerite (ZnS) due to lead activation, PbSO4 rejected tailings dams contaminates surrounding environment with lead. To address these problems, this study investigated application ethylene diamine tetra acetic acid (EDTA) pretreatment extracting ZnS flotation recovery extracted Pb2+ a...

With excessive consumption of sulfide ores, using low-grade Pb-Zn mixed ores to obtain Zn has attracted more attention. Acid leaching is an effective method for recovery; however, a high concentration inorganic acid brings severe environmental issues, including acidic wastewater, contaminated soil, etc. Compared with acid, organic showed lower acidity and toxicity. Herein, we applied recovery f...

The study and development of new sustainable mining methods to exploit low-grade ores secondary metallic resources are essential meet global demand contribute caring for the environment. Copper is one most widely used metals chalcocite main sulfide this metal. Therefore, copper recovery from chalcocite-dominant minerals could have a great impact on industry. In study, we assess at bench scale f...

The presence of anglesite (PbSO4) in complex sulfide ores negatively affects the separation Cu-Pb sulfides and sphalerite (ZnS) due to lead activation, PbSO4 rejected tailings dams contaminates surrounding environment with lead. To address these problems, this study investigated application ethylene diamine tetra acetic acid (EDTA) pretreatment extracting ZnS flotation recovery extracted Pb2+ a...

The article considers the geological features and ore composition of Dyusembay Central (Sayakhat) leadzinc deposit in Karsakpai metallogenic complex Kazakhstan. Historically, was considered industrially significant terms iron ores, rather than lead, zinc, copper. It is shown that composed tuffaceous, silty-sandstone, carbonaceous-terrigenous (ore-hosting), terrigenous, volcanogenic rocks assign...

Flotation is, doubtless, the most important process among the various techniques used for the treatment of ore. This generalpurpose technique allows the treatment of several complex ores (lead zinc, copper zinc), sulphides (copper, lead, and zinc), oxides (hematite, quartz), oxidized minerals (malachite, cerusite) and even non-metal ores (fluorite, phosphate, coal). Due to the flotation, it is ...