The microbiological leaching of a sulfide ore sample was investigated in shake flask experiments. The ore sample contained pyrite, pyrrhotite, pentlandite, sphalerite, and chalcopyrite as the main sulfide minerals. The tests were performed at eight different temperatures in the range of 4 to 37 degrees C. The primary data were used for rate constant calculations, based on kinetic equations unde...

The Pb-Zn-Cu deposit of Ulldemolins occurs within the Carboniferous sedimentary series of the southernmost Catalonian Coastal Ranges. It consists of sulphide-bearing calc-silicate assemblages, with epidote, Ca-amphiboles and Ca-garnet, which develop selectively along a dolomicrite bed near the contact with a granite porphyry. Two mineralisation styles can be differentiated: a) banded and b) irr...

The thermal stability of ZnS nanowires grown in a Au/Pd-mediated vapor-liquid-solid manner was studied by using an X-ray diffractrometer equipped with an in-situ heating system. Using an in-situ heating X-ray system, we monitored the structural degradation of ZnS nanowires in the temperature range from 25 ◦C to 900 ◦C. From the X-ray diffraction data recorded from 25 ◦C to 900 ◦C, the as-synthe...

Ptychography is an electron diffraction technique in which Bragg reflections are interfered coherently in order to measure the phases of diffraction orders directly. Two simple reconstruction methods exist, which require different degrees of coherence in the illuminating electron beam. Simulations on InP <110> for two electron accelerating voltages suggest that the asymmetric ‘dumbbells’ can be...

Mining and mineral processing industry adversely affects ecosystems communities in nearby areas, including high freshwater consumption scarcity. That is why the emerging global trend to use sea water flotation recover valuable minerals from finely disseminated base metals ores. Recent studies investigate of copper, molybdenum, nickel sulphides pyrite, while sphalerite, main for zinc production,...