Cyanidation, a conventional process to extract gold from gold ores, has been used for over 130 years in industrial mining because of the high efficiency and rate of formation of Au(CN) 2 − and the high recovery efficiency by adsorption of Au(CN) 2 − on activated carbon. However, carbonaceous refractory gold ores are not targeted for recovering gold because …
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Jiaodong is the world's third largest gold mining district, accounting for one fourth of the total gold production in China (Chen et al., 2004, Fan et al., 2005).The Liaoshang gold deposit is located in the northeastern margin of the Jiaolai Basin, and its discovery represents a recent exploration breakthrough in recent years.
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Introduction. The substantial increase in gold production (4355.07 t in 2019) has consumed an outsized range of gold ore resources, and also the average grade of gold ore has declined. ... (Li et al., 2022; Seitkamal et al., 2020; Srichandan et al., 2020). Due to the complex composition and properties of refractory gold ore, it must be analyzed ...
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Mining and extraction: Gold is typically mined from the Earth using various methods, such as placer mining, lode mining, and heap leaching. Once extracted, gold ore is processed to extract the gold metal using techniques …
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The distribution of gold (Au) between the crust and mantle is uneven. Known Au resources are located within the continental crust (1–3).Most of this Au was stored in the crust of Archean cratons prior to 3.0 billion years …
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Identifying the mechanism of gold deposition is important to reveal ore-forming processes and genesis. The giant Dayingezhuang gold deposit, with 283 tons of proven gold resources, is located in the northwestern of the Jiaodong gold province, China. Pyrite is the dominant sulfide minerals and visible gold dominates Au resources.
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Pyrite is a common auriferous mineral in hydrothermal vein-type gold deposits (orogenic-type and intrusion-related ones). Trace elements composition of pyrite is closely related to the ore-fluid physicochemical conditions (e.g., temperature, pH, oxidation state, and sulfur fugacity; Gregory et al., 2019).The pyrite texture and morphology can reflect replacement or …
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Pyrite in the Jiaodong gold province can be used to effectively trace the source of ore-forming materials and the ore-forming process because it is the main gold-bearing mineral and developed in the whole metallogenic stage (Li et al., 2018, Tang et al., 2021).Despite the analysis of in-situ elemental and isotopic compositions of pyrite in various deposits within the …
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Double refractory gold ore (DRGO) not only include ppt levels of gold grains locked in sulfide minerals but also a problematic amount of carbonaceous matter. This causes a significant recovery loss of gold during …
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A compilation of δ 34 S values of sulfides from two subtypes of IS deposits (Au-rich and Ag-rich) from NE China shows that the δ 34 S values of sulfides from Au-rich IS deposits are systematically lighter than those of Ag-rich IS Ag-Pb-Zn deposit, indicating the ore-forming fluids of the former is generally more oxidized than the latter. We ...
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The gold ore processing production line is a complex process involving multiple stages and equipment, which requires strict control of quality and environmental protection requirements at each stage to ensure the quality of the final product …
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Orogenic gold deposit, as defined by Groves et al. (1998), supplies at least 30 % of the total gold resources worldwide (Frimmel, 2008). It consists of lode gold ores and altered rock-hosted disseminated gold ores (Groves et al., 1998, Bierlein and Maher, 2001, Goldfarb et al., 2005, Groves et al., 2018, Li et al., 2019, Wang et al., 2022), which reflect the importance of a …
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Introduction. Gold is the most important precious metal in the world, ... Arsenical gold ores: ... 2008; Li et al., 2013; Ogata and Nakano, 2005). 5.4. Solvent extraction. Solvent extraction is another alternative technique to extract gold from leachate.
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The Wulaga gold deposit, located in Heilongjiang province, NE China, is a subvolcanic rock-hosted, low-sulfidation epithermal gold deposit, and has an Au reserve of about 84 tons. The gold mineralization occurs in a crypto-explosive breccia, and is spatially and temporally associated with an Early Cretaceous granodioritic porphyry. Three ...
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The Early Cretaceous Taishang gold deposit is the largest deposit in the Linglong goldfield, Jiaodong Peninsula, with a pre-mining endowment of 326 t of gold.It is hosted in the 165–150 Ma Linglong biotite granite and controlled by the NEE- to NE-trending Potouqing Fault near the northern end of the regional Zhaoping Fault system.Hydrothermal alteration is well …
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The S and Pb isotope data are consistent with values of mafic dikes that are spatially and temporally associated with gold veins in the Linglong ore field. ... by Zhan-Ke Li on Apr 16 ...
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A compilation of δ 34 S values of sulfides from two subtypes of IS deposits (Au-rich and Ag-rich) from NE China shows that the δ 34 S values of sulfides from Au-rich IS deposits are systematically lighter than those of Ag-rich IS Ag-Pb-Zn deposit, indicating the ore-forming fluids of the former are more oxidized than the latter. We highlight ...
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Southern Jilin Province, located in the northeastern margin of the North China Craton (NCC, Fig. 1a), is an important polymetallic metallogenic district that hosts numerous Ni, Fe, Cu and Au deposits (Fig. 1b), and over 20 large-, medium- and small-scale Au deposits have been found in this area. For example, the world-famous Jiapigou gold district contains proven …
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Yindongpo is the largest known gold deposit in the North Qinling terrane (Zhang et al. 2013; Chao et al. 2023; Li et al. 2023a).It is hosted in felsic metavolcanic rocks with interbedded metasedimentary rocks (Zhang et al. 2013).Jiang et al. reported a sericite 40 Ar/ 39 Ar age of 374 ± 3 Ma, but subsequent sericite K–Ar and 40 Ar/ 39 Ar dating yielded much younger ages of …
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The Early Cretaceous gold deposits in the North China Craton are known as Jiaodong-type gold deposits. Here, we summarize a quantity of reported (including this study) pyrite trace element, δ34S, and Pb isotope data from the Jiaodong, Xiaoqinling, and Central Taihangshan gold fields to comprehensively reveal the characteristics of the ore-forming fluids …
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Fluid origin and critical ore-forming processes for the giant … Introduction. The Jiaodong Peninsula is the largest gold province in China (Fig. 1), which hosts over 100 gold deposits …
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The MACH REACTOR™ finds popular application in gold leaching circuits for pre-oxidation and boosted leach of gold ore. Special applications may be found for semi-refractory to refractory …
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The CIP/CIL beneficiation process uses activated carbon as a catalyst to convert the gold element in the gold ore into soluble gold ions. It has higher gold extraction efficiency and can extract more gold from low-grade gold ore, thus …
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The Jinqingding gold deposit, characterized as an extra-large quartz-vein-type deposit, is located in the middle of the Mouping–Rushan metallogenic belt in the Jiaodong Peninsula, and there is still controversy over its sources of ore-forming materials and fluids. This paper divides the mineralization of Jinqinding gold deposits into four stages, based on a field …
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The Phapon gold deposit in northern Laos is an exception as 90 % of gold ore bodies consist of auriferous calcite veins (Li et al., 2011, Guo et al., 2019a). This deposit has been mined since 2017 and has indicated and inferred gold resources of 20 tonnes at an average grade of about 5 g/t Au.
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1. Introduction. Southern Jilin Province, located in the northeastern margin of the North China Craton (NCC, Fig. 1a), is an important polymetallic metallogenic district that hosts numerous Ni, Fe, Cu and Au deposits (Fig. 1b), and over 20 large-, medium- and small-scale Au deposits have been found in this area. For example, the world-famous Jiapigou gold district …
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On the basis of these geological and isotopic data, Huangjindong is interpreted as an orogenic gold deposit. The gold ore bodies show classic structural controls, being adjacent at the province scale to the crustal-scale Chang-Ping Fault but located in thrusts and associated tight anticlinal fold hinges that lie in corridors between markedly oblique, relatively brittle fault …
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The consistency of ore-forming material sources and initial ore-forming fluid components, and the differences in geological factors such as ore body emplacement depth and structure led to the diversity of ore types, ore mineral assemblages and ore-forming element assemblages of gold deposits in the orogenic, which constituted a giant orogenic ...
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mineralogy helps address issues and problems related to gold ore processing. It provides useful information on process selection, flowsheet development, recovery improvement and reagent …
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The Côté Gold deposit is a world-class gold (± copper), low-grade (ca. 0.96 g/t Au) deposit in northern Ontario, Canada. The deposit formed at the same time as an associated intrusive body. Mineralization occurs as a …
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