نتایج جستجو برای: native gold
تعداد نتایج: 184647 فیلتر نتایج به سال:
Heavy metals from mining, smelting operations and other industrial processing facilities pollute wastewaters worldwide. Extraction of metals from industrial effluents has been widely studied due to the economic advantages and the relative ease of technical implementation. Consequently, the search for new and improved methodologies for the recovery of gold has increased. In this particular resea...
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...
Abstract Studies of populations gold particles are becoming increasingly common; however, interpretation compositional data may not be straightforward. Natural is rarely homogenous. Alloy heterogeneity present as microfabrics formed either during primary mineralization or by modification pre-existing alloys chemical and physical drivers subsequent residence in hypogene surficial environments. I...
the muteh gold deposit (ne of golpaygan) in the central part of intrusive-metamorphic belt of sanandaj-sirjan zone comprises nw-se trending gold-quartz vein occurred in metamorphic complex. gold mineralization is associated with quartz veins that formed during regional deformation across the mylonitic zones in metamorphic rocks of predominantly meta-volcanic, gneiss and schist. the sulfidation ...
The Muteh gold deposit (NE of Golpaygan) in the central part of intrusive-metamorphic belt of Sanandaj-Sirjan zone comprises NW-SE trending gold-quartz vein occurred in metamorphic complex. Gold mineralization is associated with quartz veins that formed during regional deformation across the mylonitic zones in metamorphic rocks of predominantly meta-volcanic, gneiss and schist. The sulfidation ...
The Astarghan copper-gold deposit is located about 50 km north of Tabriz, southeast of Kharvana, East-Azarbaidjan. The most important lithologic units in the area are a hypabyssal prophyritic granodioritic intrusive stock (Oligo-Miocene) and flysch-type sedimentry sequence consisting of limestone, limy sandstone and marl (Paleocene-Eocene). The plagioclases range in composition from oligoclase...
The Bodaibo gold-bearing district in the Lena gold province of Siberia is one largest and oldest placer provinces world. Approximately 1650 tons has been extracted from region. Precise studies on source these unique deposits are lacking still controversial. Native four different locations was gathered to investigate its morphology, chemical signatures, structure inclusions. Some data primary be...
A novel third generation biosensor was developed based on one-shot adsorption of chemically-modified cytochrome c (cyt c) onto bare gold electrodes. In contrast to the classic approach which consists of attaching cyt c onto an active self-assembled monolayer (SAM) priory chemisorbed on gold, here short-chain thiol derivatives (mercaptopropionic acid, MPA) were chemically introduced on cyt c pro...
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 ...
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