Evolution of the hydrothermal ore-forming system of Ashele VMS-type Cu
@article{Yang2024EvolutionOT, title={Evolution of the hydrothermal ore-forming system of Ashele VMS-type Cu-Zn deposit in Xinjiang, NW China: Insights from mineralogy and geochemistry of sulfides}, author={Yu Yang and Huishan Zhang and Xiaoyong Yang and Chao Sun and Guangli Ren and Yanguang Li and Bo Chen and …
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Feasibility Study of Differential Flotation of Cu–Pb–Zn …
The results of the low-Cu ore indicated that it could be processed via the current RPZ flowsheet and operating conditions, but that Pb rougher and Zn rougher concentrate re-grinds would be required.
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The origin of the Dapingzhang volcanogenic Cu–Pb–Zn ore …
We obtained the first reliable pyrite Re–Os isotopic isochron age of 417 ± 23 Ma (Fig. 10), which is indistinguishable (within the analytical uncertainty) from the Re–Os dating of 429 ± 10 Ma for the bulk-ore samples and the LA-ICP-MS zircon U–Pb dating of 429 ± 2 Ma for the associated felsic rocks from the Dapingzhang Cu–Pb–Zn ore ...
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Ages and sources of components of Zn-Pb, Cu, precious …
Lead-dominant carbonate replacement deposits (Pb > Zn, Ag ± Cu ± Au) occur among other deposit types, often near porphyritic intrusions. They generally contain higher …
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Ages and Sources of Components of Zn-Pb, Cu, Precious …
Lead-dominant carbonate replacement deposits (Pb > Zn, Ag ± Cu ± Au) occur among other deposit types, often near porphyritic intrusions.
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Minor Elements in Layered Sphalerite as a Record of Fluid …
This study tests the utility of the minor to trace element composition of sphalerite to discriminate between possible sources of ore-forming fluids, and to constrain processes involved in ore genesis of the world-class Irish …
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Contrasting regimes of Cu, Zn and Pb transport in ore …
The predicted Cu, Pb, and Zn concentrations compare well with natural geofluids, and therefore the model fluids can be applied to investigate hydrothermal ore-forming process. (2) In both low- and high-salinity fluids, Cu, Pb and Zn are transported as hydrosulfide complexes at high temperature, but as chloride complexes at low temperature.
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Pyrite geochemical finger on skarn ore-forming …
The Huangshaping W–Sn–Pb–Zn and Cu–Pb–Zn skarn mineralization systems have formed multi-types of pyrite in the calcite-sulfide and siderite-sulfide stages, which are inferred to have hydrothermal origins based on their high As/Ni ratios (9.82–36,061) and coexistence with hydrothermal minerals (calcite, siderite, sericite, fluorite ...
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Understanding the Cu-Zn brass alloys using a short-range …
The chemical composition within the 2 nd-neighbor local zone is then Zn + Cu 9.4 Zn 2.6 + Cu 3.5 Zn 2.5 = Cu 12.9 Zn 6.1, or Cu 67.9 Zn 32.1 in at.%, which is close to that of the alloy, Cu 68.9 ...
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Incipient Stage of Ore Formation Process of the Kamioka Zn‐Pb Ore …
Abstract: Boundaries between the cpx Zn-Pb ores of the Kamioka ore deposit and host clinopyroxene granitoid in the Hida metamorphic belt were examined to decipher the incipient stage of ore formation process. The boundaries are characterized by the compositional zoning of relic clinopyroxene with outward increase of XMg from 0. 5 to 0. …
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Nanobubble assisted flotation separation of complex Pb–Cu–Zn …
Drill core sulfide ore samples (weighing about 60 kg) were received from Garpenberg, Boliden Mineral AB, Sweden. Garpenberg is an underground mine where the complex Zn-Pb-Ag-Cu-Au ore (Table 2) is mined from 500 to 1400 m below the ground. The core samples were initially crushed to −3 mm using a laboratory jaw crusher for the …
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Contrasting regimes of Cu, Zn and Pb transport in ore …
The modeling reveals two different modes of Cu, Pb and Zn complexing in sulfur-saturated hydrothermal solutions. At lower temperature, chloride complexes are the predominant Cu, Pb and Zn species in sulfide-saturated systems, as expected from previous studies. However, hydrosulfide Cu, Pb and Zn complexes predominate at …
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Geology, mineralogy, and cassiterite geochronology of the Ayawilca Zn
The Ayawilca deposit in Pasco, Peru, represents the most significant recent base-metal discovery in the central Andes and one of the largest undeveloped In resources globally. As of 2018, it hosts an 11.7 Mt indicated resource grading 6.9% Zn, 0.16% Pb, 15 g/t Ag, and 84 g/t In, an additional 45.0 Mt inferred resource grading 5.6% Zn, 0.23% …
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A giant porphyry-skarn-epithermal Mo-W-Cu-Zn-Pb-Ag …
Semantic Scholar extracted view of "A giant porphyry-skarn-epithermal Mo-W-Cu-Zn-Pb-Ag metallogenic system in the Nannihu ore field, southern North China Craton: constraints from new geochronological and pyrite geochemical data" by Zhan-Ke Li et al. ... Central China, the Zhonghe Ag−Pb−Zn ore field, is a newly discovered deposit …
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Petrogenetic and Metallogenetic Background of the Dajing Cu–Sn–Ag–Pb–Zn
Abstract: The Dajing Cu–Sn–Ag–Pb–Zn ore deposit, Inner Mongolia of China, is a fissure-filling hydrothermal ore deposit that occurs within the Upper Permian Linxi group. No magmatic pluton and volcanic rocks outcrop on the surface of the deposit. Most of ore veins show clear-cut boundary with country rocks.
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The origin of the Dapingzhang volcanogenic Cu–Pb–Zn ore …
The Dapingzhang Cu–Pb–Zn ore deposit is mainly hosted in the felsic volcanic rocks of the Longdonghe Formation located in the Lancangjiang zone within the Sanjiang region, Yunnan province, southwest China. This province is a part of the Lanping–Simao Block at the southern margin of the Yangtze Block (Fig. 1).
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Multistage sulfide and hydrothermal quartz as a record of precision ore
Meticulous ore-forming process and ore genesis recorded by sulfide and quartz trace elements. As a widely distributed sulfide in hydrothermal deposits, pyrite is enriched in some important trace elements such as Cu, Pb, Zn, As, Ag, Au, Co, Ni, Sb, Se, Te, Tl and Bi in hydrothermal ore-forming systems (e.g., Chouinard et al., 2005; Cook et …
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Carbonate Replacement as the Principal Ore Formation Process …
The McArthur River (HYC) Zn-Pb-Ag deposit in the Carpentaria Zn belt, northern Australia, is one of the world's largest and most studied sediment-hosted base metal deposits, owing to its lack of ...
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Nanobubble assisted flotation separation of complex …
range, less on complex sulfide ores. This study considered NB flotation for processing complex Pb- Cu-Zn sulfide ore in two different size ranges and various conditions to assess the process readiness. Metallurgical NB flotation responses (recovery, grade, kinetics, and selectivity index) were deter-
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Contrasting regimes of Cu, Zn and Pb transport in ore …
A pre-enrichment process of sulfides is therefore deemed necessary for the formation of orogenic base metal deposits, such as the Bainaimiao Cu-Au-Mo deposit, the Huogeqi Cu-Pb-Zn and the ...
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Nanobubble assisted flotation separation of complex Pb–Cu–Zn …
Nanobubble-assisted (NB) flotation investigations have been mostly examined with pure materials and a narrow particle size range, less on complex sulfide ores. This study considered NB flotation for processing complex Pb-Cu-Zn sulfide ore in two different size ranges and various conditions to assess the process readiness.
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Contrasting regimes of Cu, Zn and Pb transport in ore …
Sulfur and chlorine are the two most important ligands accounting for metal transport in the upper crust. In this study, four metal- and sulfur-saturated model fluids with varying salinities and redox states were simulated in the Fe-Cu-Pb-Zn-Au-S-C-H-O system, over a wide pressure-temperature (P-T) range (50-650 0 C, 0.8-5.0. kbar), in order to compare the …
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Zn–S isotopic fractionation effect during the evolution process of ore
The Huize Pb–Zn district is located on the southwestern margin of the Yangtze Plate (Fig. 1), on the western side of the Yunnan–Guizhou fold and thrust belt, on the Jinniuchang–Kuangshanchang (KSC) metallogenic belt within the Dongchuan–Zhenxiong tectonic belt, and on the southeastern part of the Northeast …
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Determining the ore-forming processes of Dongshengmiao …
High-grade Zn-Pb ores are mostly hosted in the Fe-rich marble and some of the mineralization are fragments of foliated ore-hosting marble and mica schist. Zn-Pb-Cu …
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Evolution of the hydrothermal ore-forming system of Ashele VMS-type Cu
Altai orogenic belt is an important Cu-Pb-Zn-Au-Fe polymetallic province in northwest China, with plenty of VMS deposits and ore resources (Fig. 1 a), which is an ideal place and natural laboratory for studying VMS deposits (Windley et al., 2002, Xiao et al., 2004, Yang et al., 2018b).The Ashele Cu-Zn deposit is the largest and most typical VMS …
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Nature and Origin of Zoned Polymetallic (Pb-Zn-Cu-Ag-Au
Polymetallic veins (Pb-Zn-Cu-Ag-Au) at the world-class Bingham Canyon, Utah, porphyry Cu-Au-Mo deposit have long been recognized, but poorly understood. They are laterally …
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In situ zircon U–Pb dating and O isotopes of the
Zn/Cu ratios generally increase with depth, manifesting an enrichment of Cu and Zn in the shallow and the deep levels, respectively. δ 34 S of sulfide minerals varies from − 0.7 to 3.1‰, implying a sulfur composition of magmatic origin. δ 30 Si and δ 18 O of quartz vary from − 0.8 to 0.4‰ and 8.5 to 9.5‰, respectively, similar to ...
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Mineralogy and Innovative Flash Flotation Separation of Cu …
According to the process mineralogy characteristics of the ore, Cu-Pb-Zn bulk flotation, partial Cu-Pb bulk flotation, and preferential flotation tests were conducted.
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Ore-Forming Processes in Irish-Type Carbonate-Hosted Zn-Pb …
For individual Zn-Pb deposit, the nature and evolution of ore-controlled structures is crucial for both understanding of ore-forming process and further exploration (Zheng et al., 2017;Song et al ...
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Geological, fluid inclusion and isotopic studies of the Yinshan Cu…
The Yinshan Cu–Au–Pb–Zn–Ag deposit is located in the famous Dexing copper–gold polymetallic district in South China (Fig. 1).This polymetallic district consists of the Middle Jurassic (ca. 170 Ma) Yinshan Cu–Au–Pb–Zn–Ag deposit (950,000 tons of Cu and 107 tons of Au) (JGEB, 1996, Yinshan Lead-Zinc Mine, 1993, Wang et al., 2011b), …
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