Most investigators regard CuFeS 2 as having the formal oxidation states of Cu+ Fe 3+(S 2−)
2. However, the spectroscopic characterisation of chalcopyrite is clearly influenced by the …

The application of heap leach technology to recovery of economically important metals,
notably copper, gold, silver, and uranium, is wide-spread in the mining industry. Unique to …

Mixed sulphide–oxide lead and zinc ores are most often found in the transition, and
occasionally in the oxidised, zones of lead–zinc ore-bodies. They are of great importance …

Abstract Mesophilic bacteria (Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans,
and Leptospirillum ferrooxidans) and moderate thermophiles (Acidithiobacillus caldus and …

Abstract Zinc (Zn)-Lead (Pb) deposits are generally rich in cadmium (Cd), and the
weathering of sulfide minerals in such deposits results in large releases of Cd into the …

Pyrite is the most common sulfide in the Earth. In the presence of arsenopyrite its oxidation is
delayed, and instead, the arsenopyrite increases its oxidation rate, releasing As (III) and As …

Sulphide minerals commonly existing in the form of polymetallic ores are the essential
objects in the fields of acid mine drainage and biohydrometallurgy. Although interactions …

Sulphidisation is an electrochemical reaction involving sulphide ions to form metal sulphides
on the surface of metal oxides. It has been widely applied to promote the flotation of …

One of the main sources of non-ferrous and precious metals is sulfide ores. This paper
presents a review of the existing literature on the electrochemical properties of some of the …

An experimental study was conducted to investigate the pyrite-assisted leaching of
chalcopyrite concentrate in iron sulfate media. It is shown that the catalytic effect of pyrite is …