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Pyrite Geochemistry and S-Hg Isotopes Reveal the Ore Genesis of the Hydrothermal Vein-type Cuiluan Ag-Pb-Zn Deposit in NE China

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Journal of Earth Science 2025年

作者： Lidong Zhang changzhou deng Yao Tang Xinran Ni Bizheng Yang Shanshan Liang Weipeng Liu Jishuang Ding Xiaohui Zeng Heilongjiang Institute of Natural Resources Survey State Key Laboratory of Ore Deposit Geochemistry， Institute of Geochemistry， Chinese Academy of Sciences College of Earth and Planetary Sciences， Chengdu University of Technology

The Xing'an-Mongolian orogenic belt is an important Ag-Pb-Zn metallogenic province in China. The study on the genesis of the newly discovered Cuiluan hydrothermal vein-type Ag-Pb-Zn deposit located in the Lesser Xing'an Range， within the eastern of Xing'an-Mongolian orogenic belt， is pivotal in understanding the metallogenic mechanism and regularity of Ag-Pb-Zn deposits in this region. This study utilizes pyrite trace elements and sulfur isotopic geochemistry， and mercury isotope of rocks and ores to constrain the genesis of the Cuiluan deposit. Pyrite geochemical data show that Ag exists in the form of galena inclusions (Ag++(Bi3+， Sb3+) ? Pb2+) in the polymetallic sulfide stage， and independent Ag-bearing minerals （matildite and gustavite） precipitate during the main mineralization stage. The small varied δ34S values （3.24‰ - 4.94‰） of pyrites from four hydrothermal stages are within the range of magmatic S isotopes， indicating that the ore-forming fluid of the Cuiluan deposit mainly originated from the magma. The Δ199Hg values of the ores are close to 0‰， which are consistent with the Δ199Hg values of mantle， further indicating that the ore-forming materials came from the lithospheric mantle. Combined with the regional tectonic evolution， we conclude that the plate subduction of Paleo-oceans in NE China triggered the partial melting of metasomatized mantle. The mantle-derived magma rose along the deep fractures and evolved ore-forming fluids， and finally caused the formation of Cuiluan quartz vein-type Ag-Pb-Zn deposit in the shallow crust. Accompany with previous documents， we infer that the fractures in the large-scale “Granite Sea” in the Lesser Xing'an Range may have significant potential for vein-type Ag-Pb-Zn exploration.

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The Cu-Mo Mineralization of the Late Jurassic Porphyry in the Northern Great Xing'an Range: Constraints from Zircon U-Pb Ages of the Ore-Causative Granites

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Acta Geologica Sinica(English Edition) 2019年第1期93卷 236-237页

作者： deng changzhou LI Guanghui College of Earth Sciences Jilin University Heilongjiang Institute of Geological Survey

The Great Xing’an Range(GXAR)is one of the most important metallogenic belts in *** study has shown that porphyry Cu-Mo deposit distributed in the northern Great Xing’an Range formed mainly in two stages:(1)Early Ordovician,such as Duobaoshan and Tongshan deposits(Liu et al.,2017);2)Triassic-Early Jurassic,including Wunugetushan,Taipingchuan and Badaguan deposits(Tang et al.,2016).In recent years,two potential porphyry Cu-Mo deposits,Huoluotai and Xiaokele,were discovered in the Erguna Block,northern GXAR(Figs.1a–b).However,the ore formation ages and regional metallogenic regularity are ambiguous due to the lack of isotopic *** zircon U-Pb ages from the ore-causative granites were reported in this paper,with the aims to constrain the metallogenic ages and provide evidence for study of the regional metallogenic regularity and ore prospect prediction.

关键词： The Great Xing’an Range(GXAR) granites Cu-Mo

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Roller-coaster atmospheric-terrestrial-oceanic-climatic system during Ordovician-Silurian transition:Consequences of large igneous provinces

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Geoscience Frontiers 2023年第3期14卷 148-162页

作者： Licai Song Qing Chen Huijun Li changzhou deng School of Earth Sciences and Resources China University of Geosciences(Beijing)Beijing 100083China Key Laboratory of Paleomagnetism and Tectonic Reconstruction Institute of GeomechanicsChinese Academy of Geological SciencesChina Geological SurveyMinistry of Natural ResourcesBeijing 100081China State Key Laboratory of Ore Deposit Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and PalaeoenvironmentChinese Academy of SciencesNanjing 210008China

The Ordovician-Silurian transition(OST)hosted profound and frequent changes in the atmospheric-terres trial-oceanic-climatic system(ATOCS).Previous studies have found contrasting stages for such changes,primarily based on hiatus-interrupted ***,the dominant driving factors and mechanisms reconciling such frequent changes remain *** isotopes,which undergo both massdependent and mass-independent fractionation,can provide critical insights into the deep-time ATOCSs,especially for those impacted by large igneous provinces(LIPs)***,we build a highresolution multi-proxy record of Hg(concentrations and isotopic compositions)combined with organic carbon isotopes(δ^(13)Corg)and whole-rock geochemical data(including trace elements and phosphorus)from continuous cores in the Yangtze Platform,South *** data,combined with reported ones,indicate the occurrence of LIP eruptions against localized volcanism,and four successive,yet contrasting stages of ATOCSs during the ***,we identified the coupling between two-pulse LIP magmatism and extreme ATOCSs,each with special pCO_(2),weathering rate,primary productivity,redox condition,climatic mode,and biotic *** stage I,the first pulse of LIP magmatism triggered global warming,enhanced terrestrial weathering,oceanic acidification,eutrophication,anoxia,P recycling,and thereby widespread deposition of black *** stage II,the Hirnantian glaciation and oxygenation arose from the intense chemical weathering and black shale deposition of stage I;slashed terrestrial weathering and oceanic oxygenation facilitated CO_(2) *** stage III,another pulse of LIP magmatism triggered the de-glaciation,and the ATOCS was largely similar to that of stage *** led to another round of oxygenation and positive d13Corg excursion in stage *** with the environmental pressure by the peculiar ATOCS of each stage,their transitions might have been more devastating in triggeri

关键词： Earth system Large igneous province Mercury isotope Late Ordovician mass extinction Phosphorus recycling

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Mercury isotope constraints on the genesis of late Mesozoic Sb deposits in South China

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Science China Earth Sciences 2022年第2期65卷 269-281页

作者： changzhou deng Jiawei ZHANG Ruizhong HU Kai LUO Yanan ZHU Runsheng YIN State Key Laboratory of Ore Deposit Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China Guizhou Geological Survey Bureau of Geology and Mineral Exploration and Development of Guizhou ProvinceGuiyang 550081China Technology Innovation Center of Mineral Resources Exploration Engineering in Bedrock Zone Ministry of Natural ResourcesGuiyang 550081China College of Resources and Environmental Engineering Guizhou UniversityGuiyang 550025China School of Earth Sciences Yunnan UniversityKunming 650500China

The late Mesozoic antimony(Sb)mineralization belt in South China hosts a large portion of the world’s Sb ***,the source and mineralization processes of these Sb deposits remain ***,we measured mercury(Hg)concentrations and isotopic compositions of stibnite in the Banpo Sb-only and Woxi Sbpolymetallic ore deposits,as well as associated rocks in the Yangtze Block in order to constrain the metal sources and ore formation processes in the South China Sb mineralization *** samples from both deposits exhibit significant enrichment in Hg(4.23–50.6 ppm)and have higher δ^(202)Hg values(−0.47‰to 2.03‰)than the studied Precambrian basement rocks(−1.42‰to 0.59‰),Paleozoic sedimentary rocks(−2.40‰to−0.32‰),and other natural Hg reserves(e.g.,marine and continental systems).This indicates that significant mass-dependent fractionation of Hg isotopes occurred during hydrothermal *** to slightly positive Δ^(199)Hg values of−0.17‰to 0.02‰were obtained for stibnite from the studied deposits,similar to values for the Precambrian basement rocks,but different from those of the Paleozoic sedimentary rocks and data previously reported for mantle *** suggests that Precambrian basement rocks were the source of Hg and associated *** data and the tectonic evolution of South China indicate that late Mesozoic asthenospheric upwelling,in response to the Paleo-Pacific oceanic slab foundering,generated heat that drove the circulation of fluids in the basement and crustal basinal *** fluids leached Sb,Hg,and other metals from the Precambrian basement rocks and formed the world-class Sb mineralization belt in South China.

关键词： Hg isotopes Mass-independent fractionation Sb deposits Metamorphic basement South China

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Origin of C type adakite magmas in the NE Xing＇an block, NE China and tectonic implication

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Acta Geochimica 2018年第2期37卷 281-294页

作者： changzhou deng Guangyi Sun Deyou Sun Hu Huang Jianfeng Zhang Jun Gou College of Earth Sciences Jilin University Changchun 130061 China State Key Laboratory of Environmental Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China University of Chinese Academy of Sciences Beijing 100049China Institute of Sedimentary Geology Chengdu University of Technology Chengdu 610059 China Heilongjiang Institute of Geological Survey Harbin 150036China

In this paper, we report new whole-rock geochemical and zircon U-Pb data for monzogranites in the NE Xing＇an block. These data constrained the petrogenesis of C type （high Sr/Y） adakitic rocks and showed the spatial extent of the influence of the Mongol-Okhostsk ocean tectonic regime and the collision between the Jiamusi Massif and Songliao Terrane. New zircon laser-ablation inductivity coupled plasma mass spectrometry （LA-ICP-MS） U-Pb data indicated that the monzogranites in the studied area were emplaced in the Early Jurassic （～ 180 Ma）. These rocks were characterized by unusally high SiO2 （≥67.49）, and Sr （461-759 ppm）, but strikingly low Y （4.63-8.06 ppm） and HREE （∑HREE = 3.83-6.49 ppm, Yb = 0.5-0.77 ppm） contents, with therefore high Sr/Y （67.2-119） and （La/Yb）N （29.7-41.5） ratios, showing the geochemical characteristics of C type adakitic granite. The data displayed negligible Eu anomalies （Eu/Eu^＊ =0.77-1.08）, LREE-enriched and pronounced negative Nb and Ta anomalies. The C-type adakites in the studied area were most likely derived from the partial melting of a thickened lower continental curst. The magma source is most likely dominated by amphibolites and garnet amphibolites. In combination with previously-reported data from igneous rocks from the Mesozoic in NE China, we conclude that the Xing＇ an block was influenced by the Mongol-Okhotsk subduction tectonic system, and experiences compressive settings from the amalgamation of the Jiamusi block in the east of the CAOB.

关键词： C type adakite Geochemistry U-Pb age Thickened LCC NE Xing' an block

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Multiple metal sources in polymetallic W-Sn ore deposits revealed by mercury stable isotopes

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Science China Earth Sciences 2024年第11期67卷 3465-3475页

作者： Zhendong TIAN Bernd LEHMANN changzhou deng Xingchun ZHANG Anbo LUO Yinghua CHEN Runsheng YIN State Key Laboratory of Ore Deposit Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China Mineral Resources Technical University of ClausthalClausthal-Zellerfeld 38678Germany Faculty of Land Resource Engineering Kunming University of Science and TechnologyKunming 650093China

Granite-related W-Sn ore systems are commonly associated with coeval Pb-Zn mineralization. It remains unclear whether these metals are derived from the same sources or not. Mercury(Hg) is a common minor component in such systems. Hg isotopes undergo unique mass-independent fractionation(expressed as Δ^(199)Hg values), which is mainly generated during Hg photochemical reactions on Earth's surface and not affected by magmatic-hydrothermal processes, offering an excellent opportunity to trace metal sources in hydrothermal systems. We observed near-zero Δ^(199)Hg values in wolframite(-0.10‰ to0.08‰, n=11), and in skarn-(-0.17‰ to 0.12‰, n=48) and greisen-type(-0.12‰ to 0.10‰, n=11) bulk tin-tungsten ore from eight major ore deposits in South China. These values are identical to those of coeval highly evolved granites(-0.13‰ to 0.12‰,n=49), supporting that Hg in W-Sn ores were sourced from granite. However, sulfides(e.g., pyrite, chalcopyrite, arsenopyrite,galena, and sphalerite) in these deposits exhibit negative to near-zero Δ^(199)Hg values(-0.42‰ to 0.09‰, n=124), which indicates a contribution of Hg and by inference other metals from both Precambrian basement rocks(Δ^(199)Hg<0) and ore-related *** study demonstrates that multiple sources of metals were involved in the formation of the polymetallic W-Sn deposits, and further highlights that extraction of metals from basement rocks may be a critical control on the formation of economically important mineralization of base metal sulfides(e.g., Pb, Zn) in granite-related magmatic-hydrothermal systems.

关键词： Tin-tungsten deposit Mercury isotope Metal source Metal zonation South China

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Permian tectonic evolution and continental accretion in the eastern Central Asian Orogenic Belt:A perspective from the intrusive rocks

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Geoscience Frontiers 2024年第2期15卷 433-451页

作者： Anzong Fu Hongyan Geng changzhou deng Chenglu Li Jishuang Ding Bizheng Yang Wenpeng Yang Heilongjiang Institute of Natural Resources Survey Harbin 150036China State Key Laboratory of Ore Deposit Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550002China Science Unit Lingnan UniversityHong KongChina College of Earth Sciences Jilin UniversityChangchun 130061China

The tectonic evolution and history of continental accretion of the eastern Central Asian Orogenic Belt(CAOB)are not yet fully *** this study,we investigate Permian intrusive rocks from the Jiamusi Block of the eastern CAOB to constrain the tectonic evolution and continental accretion of this region during the late-stage evolution of the Paleo-Asian *** new data show that Early Permian gabbro-diorites were derived from the partial melting of depleted mantle metasomatized by oceanic-slab-released *** Permian adakitic granites have low Na2O and MgO and high K2O contents,indicating a thickened-lower-crust *** Permian S-type granites were derived from the partial melting of continental crust.A compilation of the available geochronological data for Permian intrusive rocks(including adakitic and A-,S-,and I-type granites and mafic rocks)from the eastern CAOB reveals that the A-type granites formed mainly during the Early–Middle Permian,S-type and adakitic granites mostly during the Middle–Late Permian,and I-type granites and mantle-derived mafic rocks throughout the *** A-type granites,which are proposed to have been sourced from thinned continental crust,indicate an extensional setting in the eastern CAOB during the Early *** Middle–Late Permian adakitic granites imply a thickened continental crust,which indicates a compressional ***,the eastern CAOB underwent a transition from extension to compression during the Middle Permian,which was probably triggered by the late-stage subduction of Paleo-Asian oceanic *** the petrogenesis of the intrusive rocks and inferred regional tectonic evolution of the eastern CAOB,we propose that vertical underplating of mantle-and oceanic-slabderived magmas contributed the materials for continental crust accretion.

关键词： Permian Intrusive rocks Eastern Central Asian Orogenic Belt Paleo-Asian Ocean Tectonic evolution

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Age and geochemistry of Early Ordovician A-type granites in the Northeastern Songnen Block,NE China

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Acta Geochimica 2018年第6期37卷 805-819页

作者： changzhou deng Deyou Sun Guangyi Sun Changlu Lv Zhen Qin Xianquan Ping Guanghui Li College of Earth Sciences Jilin UniversityChangchun130061China Heilongjiang Institute of Geological Survey Harbin150036China State Key Laboratory of Environmental Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang550081China Faculty of Earth Sciences China University of GeosciencesWuhan430074China

Early Ordovician A-type granites in the northeastern(NE) Songnen Block NE China were studied to better understand the geodynamic settings in this *** research presents new zircon U–Pb ages and wholerock geochemical data for the Early Ordovician granites in the NE Songnen Block. Zircon U–Pb dating indicates that the granite in the Cuibei, Hongxing, and Meixi areas in the NE Songnen Block formed in the Early Ordovician with ages of 471–479 Ma. The granites show geochemical characteristics of high SiO2 and K2 O compositions and low FeOT, MgO, CaO, and P2 O5 compositions. They belong to a high K calc-alkaline series and display a weak peraluminous featurPe with A/CNK values of 0.98–1.14. The rocks have aREE composition of 249.98–423.94 ppm,and are enriched in LREE with(La/Yb)Nvalues of2.87–9.87, and display obvious Eu anomalies(d Eu =0.01–0.29). Trace elements of the studied granites are characterized by enrichment in Rb, Th, U, Pb, Hf, and Sm,and depletion of Ba, Nb, Ta, and Sr. They display geochemical features of high Zr +Y + Nb+Ce values(324–795 ppm) and Ga/Al ratios consistent with A-type granites. Based on particular geochemical features, such as high Rb/Nb(7.98–24.19) and Y/Nb(1.07–3.43), the studied A-type granites can be further classified as an A2-type subgroup. This research indicates that the Early Ordovician A-type granites were formed by the partial melting of ancient crust in an extensional setting. Lower Sr/Y and(Ho/Yb)Nratios indicate that plagioclase and amphibole are residual in the source, and garnet is absent, implying that the magma was generated at low levels of pressure. By contrast, the contemporaneous granites in the SE Xing'an Block suggest a subduction-related tectonic setting, and its adakitic property indicates a thickened continental *** suggest that the Paleo-Asian Ocean plate between the Xing'an and Songnen blocks subducted northward during the Early Ordovician. Meanwhile, the NE Songnen Block was exposed to a passive contin

关键词： Early Ordovician A-type granite Songnen and Xing’an blocks Geodynamic setting

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华北克拉通中部造山带龙门钾质岩浆结晶条件:矿物化学和锆石微量元素的约束

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岩石学报 2023年第5期39卷 1370-1386页

作者：唐宗源李杰邓昌州郑涵刘少泽河北省战略性关键矿产资源重点实验室石家庄050031 西北大学地质学系大陆动力学国家重点实验室西安710069 中国科学院地球化学研究所矿床地球化学国家重点实验室贵阳550081 中南大学地球科学与信息物理学院长沙410083 河北地质大学华信学院石家庄050700

华北克拉通中部造山带发育的早白垩世钾质岩是研究华北克拉通中部幔源岩浆成因的天然样品,然而其成岩物理化学条件仍不明确。本文选取了涞源县龙门岩体中闪长岩和二长岩开展了矿物原位地球化学和锆石微量元素分析,以探讨矿物形成的温压... 详细信息

华北克拉通中部造山带发育的早白垩世钾质岩是研究华北克拉通中部幔源岩浆成因的天然样品,然而其成岩物理化学条件仍不明确。本文选取了涞源县龙门岩体中闪长岩和二长岩开展了矿物原位地球化学和锆石微量元素分析,以探讨矿物形成的温压条件及氧逸度与矿化的关系。分析结果显示,二长岩和闪长岩的锆石Th/U比值较高(>0.1),轻稀土亏损、重稀土富集,具明显的Ce正异常和Eu负异常特征,并具有明显的震荡环带,为典型岩浆成因锆石。电子探针结果显示,龙门岩体中斜长石主要为中性斜长石,黑云母为原生镁质黑云母,角闪石主要为钙铁闪石。闪长岩中角闪石结晶温度为793~842℃,压力为0.50~0.75GPa,深度范围为19~28km,具有较低氧逸度(log f O 2为-12.21~-11.38)和高的含水量(8.5%~10.75%);二长岩中黑云母结晶温度为764~788℃,具有更低的氧逸度(log f O 2=-15.14~-14.54);闪长岩和二长岩中锆石结晶温度为770~978℃,具有较低的氧逸度(ΔFMQ=-0.37~+1.70)。矿物化学分析表明,角闪石和黑云母虽都在地壳开始结晶,但角闪石形成于比黑云母更深的岩浆房。龙门岩体中角闪石、黑云母和锆石的结晶主要受岩浆分异控制,其地球化学动力学机制主要为岩浆上侵时减压熔融,进而引起岩浆氧逸度随岩浆演化而变化。随着岩浆上涌,闪长岩中角闪石随着温度降低和压力减少逐渐结晶,地幔交代作用导致二长岩中的黑云母具有较高的X Mg值,进而形成镁质黑云母。结合区域地质背景,古太平洋板块(伊佐奈琦板块)俯冲-后撤释放的流体交代上覆岩石圈地幔对中部造山带钾质岩(~141Ma)的形成有一定贡献,该过程导致了岩浆具有较高的含水量,但龙门岩体低的氧逸度和区域上较厚的岩石圈制约了成矿金属物质(Fe-Au等)的迁移和富集,因而不利于亲硫、亲铁元素聚集以及铁、金矿化的形成。

关键词：钾质岩体锆石微量元素矿物化学氧逸度中部造山带

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大兴安岭北段八分场银矿床的发现及其成矿流体特征

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地质与勘探 2023年第1期59卷 12-26页

作者：乌日根庄倩张爽李新鹏邓昌州黑龙江省自然资源调查院黑龙江哈尔滨150036 中国地质大学(武汉)地球科学学院湖北武汉430074 中国科学院地球化学研究所矿床地球化学国家重点实验室贵州贵阳550081

大兴安岭北段多宝山地区是我国重要的铜钼金成矿区,近年来,二道坎和八分场银矿床的相继发现表明该地区银同样具有巨大的找矿潜力。以往研究热点主要集中在铜钼金等矿种,而对银矿床成矿流体性质和矿床成因的认识均极为薄弱,新发现的八分... 详细信息

大兴安岭北段多宝山地区是我国重要的铜钼金成矿区,近年来,二道坎和八分场银矿床的相继发现表明该地区银同样具有巨大的找矿潜力。以往研究热点主要集中在铜钼金等矿种,而对银矿床成矿流体性质和矿床成因的认识均极为薄弱,新发现的八分场银矿床为研究该地区银成矿作用提供了可能。本文在开展八分场银矿床地质特征和流体包裹体特征研究工作的基础上,结合与二道坎银矿床的对比分析,总结归纳二者的异同,旨在为区域找矿和深化成矿理论研究提供借鉴和参考。八分场银矿床矿体受NNE向断裂构造控制,呈脉状赋存在构造角砾岩中。矿床的形成主要经历了以下四个阶段:早期石英-磁铁矿阶段、成矿前期石英-黄铁矿阶段、主成矿期石英-银-多金属硫化物阶段和晚期碳酸盐-石英-少硫化物阶段。主成矿阶段石英中流体包裹体的研究显示,流体包裹体类型主要为气液两相包裹体,均一温度峰值集中于190~220℃,盐度集中于1.9%~4.1%NaCleqv,密度变化于0.82~0.92 g/cm^(3)。流体成矿压力在9.9~22.6 MPa,估算成矿深度为1.0~2.3 km。氢氧同位素显示,流体δ18O变化范围在1.3‰~1.9‰,δD变化范围在-110.8‰~-89.1‰。总体上,成矿流体显示出中低温、低盐度、低密度和低压的特征,与区域上新发现的二道坎银矿床类似,成矿流体皆为岩浆水和大气降水的混合,所不同的是八分场银矿床由岩浆水主导,且形成深度更深。本文研究表明,多宝山地区具有较大的银成矿潜力,有望成为国内新的银多金属矿产聚集地,银成矿作用不仅发生在地表浅处(以二道坎为代表),深部仍具有较大的找矿潜力(以八分场为代表)。

关键词：流体包裹体成矿流体氢氧同位素矿床学八分场银矿床大兴安岭

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