Geochronological and sulfur isotopic evidence for the genesis of the post-magmatic, deeply sourced, and anomalously gold-rich Daliuhang orogenic deposit, Jiaodong, China

Feng, Kai; Fan, Hong Rui; Groves, David; Yang, Kaiping; Hu, Fang Fang; Liu, Xuan; Cai, Ya Chun

doi:10.1007/s00126-019-00882-8

Cited by 39 publications

(8 citation statements)

References 81 publications

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“…The recent results of LA-ICP-MS in-situ trace elements and Nano-SIMS mapping analyses indicated that the rim domains of pyrite have obvious higher As-Au concentrations and δ 34 S values than core domains (Figure 6c, 6d), showing positive correlations among them (Feng et al, 2018(Feng et al, , 2020Li et al, 2018b;Fan et al, 2018;Zhang Y W et al, 2020), which are also consistent with the coupled behaviors between As and Au within those arsenian pyrite from Carlin-type and orogenic Au deposits (Large et al, 2009). Integrated with the results of in-situ pyrite S isotopes, fluid inclusion microthermometry and other stable isotopes, it was proposed that these As-rich fluids may be caused by the interactions between initial ore fluids and As-rich meta-sedimentary rocks, such as regional Paleoproterozoic Fenzishan and Jingshan groups, Neoproterozoic Penglai group (Feng et al, 2018).…”

Section: Invisible Gold Mineralization Related With Arsenian Pyritementioning

confidence: 91%

“…The results of LA-ICP-MS in-situ trace elements indicated the very low concentrations of arsenic (<1000 ppm) and lattice gold (<1 ppm), and a potential occurrence of gold nanoparticles locally in those pyrites. However, other ore-related pyrites from several high-grade vein type Au deposits in the central Penglai-Qixia belt and the eastern Muping-Rushan belt showed complex microtextures with regular variations of trace elements (the coupled As-Au-rich zoning) and sulfur isotopes compositions at individual grain-scales, implying the complex ore-forming fluid activities (Feng et al, 2018(Feng et al, , 2020Li et al, 2018b;Zhang Y W et al, 2020). These pyrites generally possess Aspoor dark core domains (similar to the above-mentioned Aspoor pyrites from altered rock type Au deposits) and As-rich bright zoned rim domains (As contents up to 2-3%, Li et al, 2018b;Zhang Y W et al, 2020), which are usually intergrown with polymetallic sulfides, such as galena, sphalerite, chalcopyrite and arsenopyrite (Figure 6a, 6b).…”

Section: Invisible Gold Mineralization Related With Arsenian Pyritementioning

confidence: 99%

“…Compared to quartz vein-type Au deposits, the pyrite from pyrite-sericite-quartz alteration zones in altered rock-type deposits is characterized by euhedral crystals, Au-As depletions and various S isotopic compositions (Feng et al, 2018(Feng et al, , 2020Hu et al, 2020b;Zhang Y W et al, 2020;Peng et al, 2021), which could be related with the different environments and evolutions of ore-forming fluids. Generally, the quartz vein-type deposits are formed by the more intense dilation induced by torsional stresses block rotation and abrupt decompression.…”

Section: The Formation and Precipitation Mechanisms Of "Visible Gold"mentioning

confidence: 99%

“…Generally, the quartz vein-type deposits are formed by the more intense dilation induced by torsional stresses block rotation and abrupt decompression. Within such relatively open oreforming system, the intense fluid immiscibility may be triggered by involvement of external fluids and the pressure fluctuations (Figure 7), leading to the abrupt change of fluid physicochemical conditions and compositions and subsequent precipitation of zoned, arsenic-rich, pores-rich and mineral inclusions-rich pyrite (Li et al, 2018b;Feng et al, 2018Feng et al, , 2020Zhang Y W et al, 2020;Peng et al, 2021). In contrast, the altered rock-type deposits are mainly formed under the condition of the transpression structure environment and the relatively closed ore-forming systems in the main fault zones, resulting in large-scale alteration and mineralization (e.g., fluid/rock interactions and sulfidations), and relatively gentle evolution of the fluid compositions and physicochemical conditions.…”

Section: The Formation and Precipitation Mechanisms Of "Visible Gold"mentioning

confidence: 99%

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Conditions and processes leading to large-scale gold deposition in the Jiaodong province, eastern China

Fan

Lan

et al. 2021

Sci. China Earth Sci.

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The gold deposits in the Jiaodong Peninsula constitute the largest gold mineralized province in China. The mineralization shows common characteristics in their tectonic setting, ore-forming fluid and metallogenic system. Sulfidation and fluid immiscibility are two important mechanisms controlling gold precipitation, both of which consume sulfur in the oreforming fluids. The escape of H 2 S from the main ore-forming fluids and the decrease of total sulfur concentration not only lead to the efficient precipitation of gold, but also result in the crystallization of reducing minerals such as pyrrhotite and oxidizing minerals such as magnetite. Quartz solubility shows strong dependence on temperature, pressure, and CO 2 content. The dependence of quartz solubility on pressure is weak at low temperatures, and progressively stronger at higher temperatures. Similarly, the temperature dependence of quartz solubility is relatively low at low pressures, but becomes gradually stronger at high pressures. The results of solubility modeling can constrain the dissolution and reprecipitation behavior of quartz in the oreforming veins and the formation mechanism of different types of quartz veins. The multi-stage mineralization fluid activity resulted in the complex dissolution structure of quartz in the Jiaodong gold veins. Pyrite in the main metallogenic period in the Jiaodong gold deposits shows complex microstructure characteristics at single crystal scale. The trace elements (mainly the coupling of As-and Au-rich belt) and sulfur isotope composition also display a certain regularity. The As-rich fluids might have formed by the initial pulse of ore-forming fluids through As-rich metasedimentary strata, while the As-Au oscillation zone at the margin of pyrite grains is related to the pressure fluctuation caused by fault activity and the local phase separation of fluids. There is a temporal and spatial evolution of gold fineness in the Jiaodong gold deposits. Water/rock reaction (sulfidation) was the main ore-forming mechanism of early gold mineralization, forming relatively high fineness gold, while significant pressure drop in the shallow part accompanied by fluid phase separation promoted the late gold mineralization, forming low fineness gold. Under cratonic destruction setting, dehydration of the amphibolite and granulite facies metamorphic lower-crust resulted in the formation of Au-CO 2 -rich ore-forming fluids, which rose along the deep fault and secondary structure, and formed the largescale fault-controlled gold deposits in Jiaodong.

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Section: Invisible Gold Mineralization Related With Arsenian Pyritementioning

confidence: 91%

Section: Invisible Gold Mineralization Related With Arsenian Pyritementioning

confidence: 99%

Section: The Formation and Precipitation Mechanisms Of "Visible Gold"mentioning

confidence: 99%

Section: The Formation and Precipitation Mechanisms Of "Visible Gold"mentioning

confidence: 99%

See 2 more Smart Citations

Conditions and processes leading to large-scale gold deposition in the Jiaodong province, eastern China

Fan

Lan

et al. 2021

Sci. China Earth Sci.

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“…In-situ S isotopic analysis of sulfides from the Wangershan gold deposit in the Jiaodong Peninsula and the Baiyun gold deposit in the Liaodong Peninsula indicates that the sulfides deposited at the main mineralization stage have magmatic δ 34 S values (Hu et al, 2020;Liu J C et al, 2020;Sun G T et al, 2020). In addition, noble gas isotopes sulfides in gold deposits in the NCC were derived from mixing sources, i.e., mantle and crust (Zhang, 2002;Mao et al, 2003;Tang, 2014;Zhang et al, 2019;Feng K et al, 2020;Liu J C et al, 2020;Shen et al, 2020). The proven reserves of the Jiaodong gold deposits are proportional to the contents of mantle component (Tan et al, 2018).…”

Section: Sources Of Ore-forming Materials and Metallogenic Mechanismmentioning

confidence: 99%

Geodynamics of decratonization and related magmatism and mineralization in the North China Craton

Yang

Sun

et al. 2021

Sci. China Earth Sci.

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The North China Craton (NCC) experienced strong destruction (i.e., decratonization) during the Mesozoic, which triggered intensive magmatism, tectonism and thermal events and formed large-scale gold and other metal deposits in the eastern part of the craton. However, how the decratonization controls the formation and distribution of large-scale of gold and other metal deposits is not very clear. Based on a large number of published data and new results, this paper systematically summarizes all the data for the rock assemblages, chronology, geochemistry and petrogenesis of Mesozoic magmatic rocks, as well as for the mineralizing ages of gold and other metal deposits and the evolution of the Mesozoic basins in the eastern NCC. The results are used to restore the extensional rates of Mesozoic to Cenozoic basins and the strike-slip distance of the Tanlu Fault, to ascertain the location of the Paleo-Pacific plate subduction zones during the Mesozoic to Cenozoic, and to reconstruct the temporal and spatial distribution of Mesozoic gold and other metal deposits and magmatic rocks in the eastern NCC. It is obtained that the magmatism and mineralization in the eastern NCC westward migrate from east to west during the Early to Middle Jurassic, but they eastward migrate from west to east during the Early Cretaceous. The metallogenesis of these deposits is genetically related to magmatism, and the magmas provided some ore-forming materials and fluids for the generation of metal deposits. The geodynamic mechanism of decratonization and related magmatism and mineralization is proposed, i.e., the westward low-angle subduction of the Paleo-Pacific slab beneath the NCC formed continental magmatic arc with plenty of porphyry Cu-Mo-Au deposits in the Jurassic, similar to the Andean continental arc in South America. The mantle wedge was metasomatized by the fluids/melts derived from the subducting slab, laying a material foundation for hydrothermal mineralization in the Early Cretaceous. While the rollback of the subducting slab with gradually increasing subduction angle and the retreat of the subduction zones during the Early Cretaceous induced strong destruction of the craton and the formation of extensive magmatic rocks and large-scale gold and other metal deposits.

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Micro-Geochemistry of Pyrite and Gold Mineral in Jiaodong Gold Deposits: Implications for Genesis of Gold Deposit

Liang

2021

Mineral Micro-Geochemistry Constraints on Petrogenesis and Genesis of Gold Deposit

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Geochronological and sulfur isotopic evidence for the genesis of the post-magmatic, deeply sourced, and anomalously gold-rich Daliuhang orogenic deposit, Jiaodong, China

Cited by 39 publications

References 81 publications

Conditions and processes leading to large-scale gold deposition in the Jiaodong province, eastern China

Conditions and processes leading to large-scale gold deposition in the Jiaodong province, eastern China

Geodynamics of decratonization and related magmatism and mineralization in the North China Craton

Micro-Geochemistry of Pyrite and Gold Mineral in Jiaodong Gold Deposits: Implications for Genesis of Gold Deposit

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