In a study based on Pb isotopes, it has been shown that the formation of gold-sulfide mineralization in Early Proterozoic gabbros Northern Ladoga region is associated with different tectonic phases. This conclusion comparative isotopic data for feldspars and lead sulfides two intrusions; Velimäki Alattu-Päkylä. The investigated intrusions have similar geological settings at junction Svecofennia...

With >90 known deposits containing original reserves of >2400 Mt sulfide ore, the Iberian Pyrite Belt (IPB) is largest volcanogenic massive (VMS) province on Earth. In these evolving mineral systems, texturally different pyrite exhibits characteristic mineralogy and trace element fingerprints. (Py-1), which well preserved in polymetallic ores that crystallized at earliest stage VMS deposit form...

Low grade sulfide ores are difficult to process due their composite mineralogy and fine grained dissemination with gangue minerals. Therefore, grinding of such becomes essential liberate valuable In this research, selective flotation was carried out using two pitched blade turbine impellers diameters 6 cm 7 float copper nickel. The main focus research generate optimum hydrodynamic conditions th...

Jarosite, beudantite and alunite are members of the supergroup. Minerals like those have been detected in different environments on Earth. These jarosite-type compounds common acid rock drainage sulfate soils, resulting from weathering sulfide ores; they also present bioleaching systems because found cultures iron-oxidizing microorganisms. Jarosite is generated hydrometallurgical circuits, main...

The separation of rare metals from the ores and commercially available compounds is an important issue due to the need of their high purity in advanced materials and devices. Important examples of two highly important elements that co-exist in the ores are scandium and thorium. Scandium containing ores and consequently also commercially available scandium compounds often contain traces of thori...

Modern analytical methods (optical and electron microscopy, X-ray microanalysis) were used to study the unique samples of sulfide ores from Norilsk ore field Mining Museum collections Saint Petersburg University. Samples containing rare minerals silver platinum-group metals (sobolevskite, urvantsevite, sperrylite, argentopentlandite, froodite, kotulskite, others) studied. The chemical compositi...

Most gold deposits occur associated with sulphides like pyrite and arsenopyrite; thus, precious metal dissolution is possible by oxidizing auriferous sulfide concentrate using simultaneous pressure oxidation cyanidation. The effectiveness of this process extraction can be influenced the temperature, cyanide (NaCN) concentration, oxygen pressure. In study, we conducted experiments to characteriz...

Conservation Biogeography and Macroecology Programme, School of Geography and the Environment, University of Oxford, South Parks Road, Oxford, OX1 3QY, UK, CE3C – Centre for Ecology, Evolution and Environmental Changes / Azorean Biodiversity Group and Universidade dos Ac ores Departamento de Cîencias Agr arias, 9700-042, Angra do Hero ısmo, Ac ores, Portugal, Center for Macroecology, Evolution ...

Metals used in everyday life are produced from ores occurring in the Earth’s crust. Geological processes are known to concentrate minerals to form ores of economic value. Mineral processing engineers concentrate these ores by mechanical and physico-chemical methods while the extractive metallurgist extracts the metals by chemical means.