Tashvir and Varmazyar deposits are part of the epithermal ore system in Tarom–Hashtjin Metallogenic Belt (THMB), NW Iran. In both deposits, veins hosted by Eocene volcanic-volcaniclastic rocks Karaj Formation spatially associated with late granitoid intrusions. The assemblages consist pyrite, chalcopyrite, chalcocite, galena, sphalerite (Fe-poor), lesser amounts bornite minor psilomelane pyrolu...

The Salobo iron oxide copper-gold (IOCG) deposit host an important Cu-mineralization of the Carajás Mineral Province. ore is characterized by association (bornite-chalcocite-digenite) hosted magnetite and biotite-garnet schists. These rocks record distinct stages superimposed hydrothermal alteration dynamic metamorphism. Three different occurrences constitute bodies: a pristine to inclusion-poo...

The Ab-Bid deposit, located in the Tabas-Posht e Badam metallogenic belt (TPMB) Central Iran, is largest Pb-Zn (±Cu) deposit Behadad-Kuhbanan mining district. Sulfide mineralization formed Middle Triassic carbonate rocks and contains galena sphalerite with minor pyrite, chalcopyrite, chalcocite, barite. Silicification dolomitization are main wall-rock alteration styles. Structural textural obse...

The vein-type Chomalu polymetallic epithermal deposit, located in the Tarom-Hashtjin Metallogenic Province (THMP), western Alborz, formed two separate mineralized zones controlled by fault within andesite and olivine basalt host rocks. deposit occurs adjacent to Varmarziar quartz monzonite, monzodiorite, monzosyenite intrusions. Ore mineralization consists of three stages; (i) an early stage do...

Kinetics of the chemical leaching of chalcocite from a low-grade copper ore in a ferric sulfate medium was investigated using the constrained least square optimization technique. The experiments were carried out for different particle sizes in both the reactor and column at constant Eh, pH, and temperature. The leaching rate increased with increase in the temperature. About 50% of the Cu recove...

The quasi-equilibrium directional crystallization of the melt composition (at. %): Cu 24.998, Fe 25.001, S 49.983, with Ag 0.002, Pd 0.003, Ru 0.004, Rh 0.006, and Au, Pt, Ir (each as 0.001) was carried out. crystallized cylindrical ingot consisted two primary zones three secondary different chemical phase compositions. compositions corresponded to high-temperature intermediate solid solution (...

Abstract Detailed mineralogical and textural studies, combined with sequential X-ray diffraction geochemical modeling, helped to solve the “copper pitch/wad” enigma in Exótica deposit located downstream of Chuquicamata porphyry copper deposit. Copper pitch wad are essentially chrysocolla co-precipitated Mn oxides, mainly birnessite, as well pseudo-amorphous oxide/oxyhydroxides. Linking mineralo...

Process optimization is one of the most important activities in today's competitive industries. the rather high cost of research and development has necessitated the development of experimental methods by which the factors affecting processes&#10could be determined with minimum number of experiments. Over the last two decades, various types of experimental designs have been used. Among the diff...