Even though mechanical activation is a significant pretreatment technology for the efficient extraction of metals from mineral resources, its effects on bioleaching sphalerite and marmatite are rarely discussed. In this study, using various grinding media times was conducted, particle size distribution, morphology, X-ray diffraction (XRD) energy dispersive spectrometry (EDS) analyses, as well b...

Exploration under thick glacial sediment cover is an important facet of modern mineral exploration in Canada and northern Europe. Till heavy concentrate (HMC) indicator methods are well established for diamonds, gold, base metals glaciated terrain. Traditional rely on visual examination >250 µm HMC material. This study applies liberation analysis (MLA) to investigate the finer (<250 µm) f...

Sulfur-/sulfate-reducing bacteria (SRB) have been used for remediation of metalcontaminated ground water and soil through the precipitation of metal sulfides. These metal sulfides range from 3 nm to 3 μm in diameter. Of specific interest to this research are zinc sulfide nanoparticles (ZnS NPs) produced by SRBs with a diameter of ~3 nm. These ZnS NPs can be used as catalysts to grow nano-wires,...

the base (cu–pb–zn) and precious metals (ag±au) mineralization at the no. 4 anomaly of golojeh deposit occurred in volcanic and sub–volcanic eocene–oligocene host rocks, in the central part of the tarom–hashtjin zone. basic to intermediate volcanic, volcaniclastic and sub–volcanic rocks are dominated in the area and include andesite, basaltic andesite, trachy-andesite, dacite and tuff with affi...

Analyses of fluid inclusion gases from Mississippi Valley-type districts in east Tennessee reveal the presence of several distinct aqueous solutions and vapors that were part of the mineralizing process. Inclusion contents were released by crushing 5 to 25 mg mineral samples and by decrepitating individual inclusions; all analyses were obtained by quadrupole mass spectrometry. Most analyzed inc...

Different samples have been prepared from different products in Chadormalu iron ore concentrator plant: Low intensity magnetite separators concentrate (magnetite concentrate), reverse flotation tail (final hematite concentrate), flotation concentrate (apatite concentrate), final tail (L.I.M.S. tail + reverse flotation concentrate+ apatite flotation tail). The samples were used for rare eart...

Antimony (Sb) is identified as a critical metal in many countries. The source of hydrothermal Sb-bearing deposits currently debated two opposing models (magmatic fluids or country rocks). Some systems host abundant cadmium (Cd). Due to the close association Cd and Sb distinct isotopic signatures between magmatic sedimentary rocks, isotopes have potential trace origin deposits. Here, we conducte...