The Lut Block is a potential porphyry-style mineralized region in Iran including the well-explored Shadan porphyry gold-copper deposit, which has an extensive zone of gold- and copper-bearing stockwork-like sheeted veins. structural setting this deposit key to understanding genesis mineralization. Our field studies show that mineralization occurs as steeply dipping ore bodies along NW–SE transp...

The Jagpura Au-Cu deposit is situated within the Aravalli craton in northwestern part of India. In present work, petrography, mineral chemistry, fluid inclusion and sulfur isotopic compositions were used to study deposit. ore association arsenopyrite, loellingite, chalcopyrite, pyrrhotite pyrite, along with native gold, magnetite apatite. gold fineness ranges from 914–937‰ (avg. 927‰). presence...

Surface-immobilized, densely packed gold nanoparticles in contact with aqueous silver ions and exposed to red light rapidly photoreduce silver ions in solution producing radially symmetric metal deposits with diameters many times larger than the diameter of the illuminating laser beam. The average particle sizes in the deposit increase with radial distance from the center of the deposit. This r...

As an important tectonic unit of Eastern Tethyan domain, Sanjiang orogenic belt started from the expansion, subduction, subtraction and closure Paleozoic Paleo-Tethys Ocean, went through opening Neo-Tethys Ocean subduction collision process Indian continent ended in Himalayan comprehensive intracontinental convergence uplift orogeny, forming a giant composite composed several island arc belts s...

Introduction: The Saibagou gold deposit, located in the eastern part of tectonic belt northern Qaidam Basin western China, has its ore bodies strictly controlled by regional fault system. Despite this understanding, there remain controversies surrounding deposit’s metallogenic epochs, sources ore-forming materials, and properties fluids. To address these controversy, process deposit can be furt...

The influence of cathode agitation on the residual stress of electroplated gold has been investigated. Using a custom-built plating cell, a periodic, reciprocating motion was applied to silicon substrates that were electroplated with soft gold. A commercially available gold sulfite solution was used to deposit the 0.6 lm thick gold films using a current density of 3.0 mA/cm and a bath temperatu...

sorkheh-dizaj apatite-iron oxide deposit is located 32 km southeast of zanjan. the area is situated within the tarom subzone of western alborz-azarbaijan structural zone. the oldest units at the sorkheh-dizaj area are eocene trachyte, trachyandesite, olivine basalt and volcanoclastic brecciate tuff and lapilli tuff which intruded by a quartz-monzonite, monzonite and granite subvolcanic pluton o...

Abstract Mining of “invisible gold” associated with sulfides in gold ores represents a significant proportion production worldwide. Gold hosted sulfide minerals has been proposed to be structurally bound the crystal lattice as sulfide-gold alloy and/or occur discrete metallic nanoparticles. Using combination microstructural quantification and nanoscale geochemical analyses on pyrite from an oro...

estimation of gold reserves and resources has been of interest to mining engineers and geologists for ages. the existence of outlier values shows the economic part of the deposits subject to the fact that don’t depend on the human or technical errors. the presence of these high values causes a pseudo dramatically increment in variance estimation of economical blocks when applying conventional m...