In the Buchim porphyry copper deposit, we determined several representative rare mineral phases, comprising metals from gold-palladium group as well those bismuth-selenium (Cu-Bi-Se-Te-As) group. The phases are represented by new in bismuthinite, galenobismutite, krupkaite, friedrichite, emplectite, laitakarite and native bismuth of gold-palladium, including gold palladium with their elemental ...

Spinodal decomposition is an important mechanism of exsolution. However, spinodal has not been observed in natural sulfide intergrowths. We utilized focused ion beam (FIB) and transmission electron microscopy (TEM) techniques to confirm intergrowths (chalcopyrite bornite). According FIB TEM analyses, occurred as small curving alternating dark bright fluctuations bornite–chalcopyrite Due the low...

The synthesis and characterization of a series of homologous tetranuclear complexes [((i)Pr3PCu)2(MR2)2(SCH2CH2S)2] (MR2 = GaMe2 (2), GaEt2 (3), Ga(i)Pr2 (4), Ga(n)Bu2 (5) and InMe2 (6), InEt2 (7), In(i)Pr2 (8), In(n)Bu2 (9)) and of related compounds [((i)Pr3PCu)3(MR2)(SCH2CH2S)2] (MR2 = GaMe2 (10), GaEt2 (11), Ga(i)Pr2 (12), Ga(n)Bu2 (13) and InMe2 (14), InEt2 (15), In(i)Pr2 (16), In(n)Bu2 (17...

An integrated bioleaching system (stable pH-silver ion-chloride ion) was firstly proposed to for improving the efficiency of chalcopyrite bioleaching by mixed strains of Acidithiobacillus. The individual effects of stable pH, silver ion, and chloride ion on bioleaching were respectively studied. The highest copper ion concentrations in each system were 45.8, 50.2, and 45.2 mg/l, respectively, w...

The aim of this investigation was to determine the efficacy of chalcopyrite bioleaching using pure cultures of Acidithiobacillus ferrooxidans or Acidithiobacillus thiooxidans and a mixed culture composed of Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans. The experiments were carried out in shake flasks with [Fe] 4 gL 1 and S 1 gL 1 at pH 1.80, 130 rpm and 30 C. Inocula of both...

Investigations were carried out to isolate microbial strains from soil, mud and water samples from metallurgically polluted environment for bioremediation of toxic heavy metals. As a result of primary and secondary screening various 72 acidothermophilic autotrophic microbes were isolated and adapted for metal tolerance and biosorption potentiality. The multi-metal tolerance was developed with h...

Nanometer sized particles of the chalcopyrite compounds CuInS2 and CuInSe2 were synthesized by thermal decomposition of molecular single-source precursors (PPh3)2CuIn(SEt)4 and (PPh3)2CuIn(SePh)4, respectively, in the non-coordinating solvent dioctyl phthalate at temperatures between 200 and 300 "C. The nanoparticles range in size from 3 30 nm and are aggregated to form roughly spherical cluste...

The bioleachings of chalcopyrite ore were compared after inoculating different cultures enriched from the original acid mine drainage sample. The results showed that the higher bioleaching performance was achieved for inoculation with the enrichment D (0.5 % S, 2 % iron and 1 % chalcopyrite) compared to other enrichment systems. The generated ferric precipitation during bioleaching had a key in...