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Science China Earth Sciences 2007年第4期50卷 496-504页

作者： LIU ZhengHong XU ZhongYuan wang keyong College of Earth Science Jilin universityChangchun 130061China

Polycrystalline quartz ribbons in high-grade metamorphic rocks from the Daqingshan region, are typi- cal microfabrics of, and provide information for, deep crust deformation and metamorphism. The quartz ribbons have straight boundaries and extend stably along gneissosity. They truncate other mineral grains in the rocks and may contain inclusions of such minerals that are lens-shaped and oriented. They frequently end into branching termination. Analysis fluid inclusions in polycrystalline quartz rib- bons reveal that the complex types of fluid inclusions are inhomogeneously distributed. They are ob- viously different from inclusions captured at granulite facies, in both fluid compositions and T-P esti- mations. Based on microfabric and fluid inclusion analysis, the polycrystalline quartz ribbons are suggested to be formed by SO2-rich fluids filling micro-fractures that are parallel to early gneissosity. The SO2 composition is derived from the deformed host rocks. The fluid phase has significant effects on the rheological characteristics, fracturing of rocks, and formation of quartz ribbons.

关键词： polycrystalline quartz ribbon fluid inclusion microstructure Daqingshan

Sources of the Laoxiongdong carbonate-hosted Pb–Zn deposit in Southwest China:constraints from S–Pb–Zn isotopic compositions

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Acta Geochimica 2020年第5期39卷 717-732页

作者： Wenyuan wang Jianguo Gao keyong wang Yangxia Nong College of Earth Sciences Jilin UniversityChangchun 130061China Faculty of Land Resource Engineering Kunming University of Science and TechnologyKunming 650093China Kunming Metallurgical Research Institute Kunming 650031China

The Sichuan-Yunnan-Guizhou(SYG)Pb-Zn mineral province,which has significant Pb-Zn repositories in China,is situated in the western Yangtze *** decades of research,the Pb-Zn source of deposits is still disputed between the basement rocks,sedimentary wall rocks,or the Emeishan flood *** newly-discovered Laoxiongdong Pb-Zn deposit is hosted by the Late Ediacaran Dengying Formation in the SYG ***,the Laoxiongdong orebodies lie between regional deep faults and close to the Proterozoic basement and Emeishan ***,this deposit represents a good case study on the ore-forming material source for the regional Pb-Zn *** Laoxiongdong Pb-Zn ores are massive,vein,or disseminated and have mainly sphalerite,galena,pyrite,quartz,and *** this paper,we present new sulfide S-Pb-Zn isotope data of the *** sulfideδ34SCDT values(+11.8 to+16.5‰)suggest that the reduced sulfur was mainly sourced from evaporites in the Late Ediacaran-Cambrian *** isotopic ratios(206Pb/204Pb=18.004-18.107,207Pb/204Pb=15.652-15.667,and 208Pb/204Pb=38.037-38.248)suggest that the lead metal was primarily originated from the basement *** sphaleriteδ66Zn values(+0.16 to+0.37‰)are also highly similar(within error)to those of basement rocks(+0.10 to+0.34‰),suggesting a basement-rocks zinc source with minor contributions from the carbonate host rocks and Emeishan flood *** narrow sphalerite Zn isotopic range(0.21‰)also indicates that the Zn isotopic fractionation between the sphalerite and initial fluid was limited during the sphalerite ore ***,we propose that both the Late Ediacaran Dengying Formation rocks and Proterozoic basement rocks were important ore-forming material source for the Laoxiongdong deposit,whereas the Emeishan flood basalts represent only a minor ore-material source.

关键词： S–Pb–Zn isotopes The Laoxiongdong Pb–Zn deposit Sichuan–Yunnan–Guizhou Pb–Zn mineral province Southwest China

Failure mode investigation of fuel cell for vehicle application

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Frontiers in Energy 2017年第3期11卷 318-325页

作者： Zhongjun HOU Renfang wang keyong wang Weiyu SHI Danming XING Hongchun JIANG Sunrise Power Co. Ltd. & National Engineering Research Centre of Fuel cell and H2 Technology Dalian 116085 China

The durability of proton exchange membrane fuel cells （PEMFCs） has been posing a key technical challenge to commercial spread of fuel cell vehicles （FCVs）. To improve the durability, it is necessary to optimize the fuel cell system （FCS） design against failure modes. The fuel cell durability research method at FCS scale was exhibited, and the failure modes of fuel cell were experimentally investigated in this paper. It is found that the fuel cell dry operation, start/stop cycle and gas diffusion layer （GDL） flooding are typical failure modes of fuel cells. After the modifications against the failure modes, the durability of FCSs is improved to over 3000 h step by step.

关键词： proton exchange membrane fuel cell (PEMFC) fuel cell system (FCS) durability failure mode fuel cell vehicle (FCV) carbon corrosion water management

Factors Controlling Deposition of Metallic Minerals in the Meng’entaolegai Ag-Pb-Zn Deposit, Inner Mongolia, China: Evidence from Fluid Inclusions, Isotope Systematics, and Thermodynamic Model

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Journal of Earth Science 2020年第2期31卷 271-286页

作者： He Yang Wanli Ma Rui wang Xueli Ma keyong wang College of Earth Sciences Jilin UniversityChangchun 130061China

The Meng’entaolegai Ag-Pb-Zn vein-type deposit in Inner Mongolia,NE China is hosted in biotite/muscovite *** deposit includes the western(Zn-rich,deepest),middle(Zn-Pb rich)and eastern(Pb-Ag-rich,shallowest)*** better understand the metallogenic processes in ore district,we have undertaken a series of studies including fluid inclusion microthermometry,H-O-S-Pb isotope compositions and thermodynamic *** on fluid inclusion petrography,microthermometry results and HO isotope compositions,the ore-forming H2O-NaCl fluid inclusions are characterized by medium temperature and medium *** two kinds of fluid processes(boiling in western and middle ore-block and fluid mixing in the eastern ore-block)were identified to explain the ore fluid *** importantly,log ?O2-pH diagrams of δ^34S contours with the stability fields of Fe-and Cu-,Zn-,Pb-,and Ag-bearing minerals were constructed to restore the physicochemical conditions of ore-forming fluid in the western(270℃ and 80 bars),middle(250℃ and 70 bars),and eastern(230℃ and 50 bars)*** a result,the ore-forming conditions in the western and middle ore-block were *** the eastern ore-block,the fluids may have changed from acidic,S-poor and δ^34S(ΣS)≈2.8 to neutral,S-richer and δ^34S(ΣS)≈0.5,which imply that neutral S-rich meteoric water was mixed with the magmatic ***,the activity of Ag+was estimated to be about 10 ppm–9 ppm in the middle ore-block,but in the eastern ore-block it was about^10 ppm–12 *** proposed that the key for Ag ore deposition was likely to be neutralization led by fluid mixing.

关键词： fluid inclusions isotope systematics thermodynamic model Ag-Pb-Zn deposit Meng'entalegai NE China

Fluid inclusion and H-O isotope study of the Jiguanshan porphyry Mo deposit,Xilamulun Metallogenic Belt:implications for characteristics and evolution of ore-forming fluids

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Acta Geochimica 2020年第4期39卷 497-511页

作者： Changhong wang keyong wang Wenyan Cai Jian Li Hanlun Liu Yicun wang College of Earth Sciences Jilin UniversityChangchun 130061China College of Geology and Mining Engineering Xinjiang UniversityUrumqi 830047China Key Laboratory of Mineral Resources Evaluation in Northeast Asia Ministry of Land and Resources of ChinaChangchun 130061China

We studied the fluid inclusions of the Jiguanshan Mo deposit in China,which is a large porphyry deposit located in the southern Xilamulun Metallogenic *** irregular Mo ore body with various types of hydrothermal veinlets is hosted by Late Jurassic granite *** hydrothermal alterations in the deposit from the core to margin are silicification-potassium feldspar alteration,pyrite-quartz-sericite-fluorite alteration,and propylitic *** on the mineral assemblages and crosscutting relationships of ore veins,the ore-forming process were divided into three stages and two substages:quartz-pyrite veins(stage I)associated with potassic alteration;quartz-molybdenite-chalcopyrite-pyrite veins(substage Ⅱ-1)and quartz-molybdenite-fluorite veins(substage Ⅱ-2)associated with phyllic alteration;and fluorite-quartz-carbonate veins(stage Ⅲ)with *** majorfluid inclusions(FIs)types were distinguished in the quartz associated with oxide and sulfide minerals,*** brine(Pb-type),opaque-bearing brine(Ob-type),solid halite(S-type),two-phase aqueous(A-type),and vapor(Vtype)*** FIs of stage I were composed of liquid-rich S-,A-,and V-type FIs with homogenization temperatures and salinities of 490 to 511℃ and 8.9 to 56.0 wt%NaCl equiv.,*** FIs of substage Ⅱ-1 are composed of Pb-,Ob-,S-,A-,and V-type FIs with homogenization temperatures and salinities of 352 to 460℃ and 3.7 to 46.1 wt%NaCl equiv,*** FIs of substage Ⅱ-2 are Ob-,S-,A-,and V-type FIs with homogenization temperatures and salinities of 234 to309°C and 3.7 to 39.2 wt%NaCl equiv,*** FIs of stage Ⅲ are A-type FIs with homogenization temperatures and salinities of 136 to 172℃ and 1.1 to 8.9 wt%NaCl equiv,*** boiling,which resulted in the precipitation of sulfides,occurred in stages I andⅡ.The initial ore-forming fluids of the Jiguanshan deposit had high temperature,high salinity,and belonged to an F-rich NaCl±KCl-H2O system.

关键词： Fluid inclusions Fluid inclusion assemblages H-O isotope Xilamulun Metallogenic Belt Porphyry Mo deposit

Fluid inclusions,C-H-O-S-Pb isotope systematics,geochronology and geochemistry of the Budunhua Cu deposit,northeast China:Implications for ore genesis

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Geoscience Frontiers 2020年第4期11卷 1145-1161页

作者： Kaituo Shi keyong wang Xueli Ma Shunda Li Jian Li Rui wang College of Earth Sciences Jilin UniversityChangchun130061China College of Geology and Mining Engineering Xinjiang UniversityUrumqi830047China MNR Key Laboratory of Mineral Resources Evaluation in Northeast Asia Changchun130061China

The Budunhua Cu deposit is located in the Tuquan ore-concentrated area of the southern Great Xing’an Range,NE *** deposit includes the southern Jinjiling and northern Kongqueshan ore blocks,separated by the Budunhua granitic *** mineralization occurs mainly as stockworks or veins in the outer contact zone between tonalite porphyry and Permian *** ore-forming process can be divided into four stages involving stage Ⅰ quartz-pyrite-arsenopyrite;stage Ⅱ quartz-pyrite-chalcopyrite-pyrrhotite;stage Ⅲ quartz--polynetallic sulfides;and stage IV *** types of fluid inclusions(FIs) can be distinguished in the Budunhua deposit:liquid-rich two-phase aqueous FIs(L-type),vapour-rich aqueous FIs(V-type),and daughter mineral-bearing multi-phase FIs(S-type).Quartz of stages Ⅰ-Ⅲ contains all types of FIs,whereas only L-type FIs are evident in stage Ⅳ *** coexisting V-and S-type FIs of stages Ⅰ-Ⅲ have similar homogenization temperatures but contrasting salinities,which indicates that fluid boiling *** FIs of stages Ⅰ,Ⅱ,Ⅲ,and Ⅳyield homogenization temperatures of 265-396℃,245-350℃,200-300℃,and 90-228℃ with salinities of3.4-44.3 wt.%,2.9-40.2 wt.%,1.4-38.2 wt.%,and 0.9-9.2 wt.% NaCl eqv.,***-forming fluids of the Budunhua deposit are characterized by high temperatures,moderate salinities,and relatively oxidizing conditions typical of an H2 O-NaCl fluid *** in the Budunhua deposit occurred at a depth of0.3-1.5 km,with fluid boiling and mixing likely being responsible for ore precipitation.C-H-O-S-Pb isotope studies indicate a predominantly magmatic origin for the ore-forming fluids and ***-ICP-MS zircon U-Pb analyses indicate that ore-forming tonalite porphyry and post-ore dioritic porphyrite were formed at 151.1±1.1 Ma and 129.9±1.9 Ma,*** data imply that the primary magma of the tonalite porphyry formed through partial melting of Neoproterozoic lower *** the basis

关键词： Fluid inclusion C-H-O-S-Pb isotopes Zircon U-Pb geochronology Whole-rock geochemistry Budunhua Cu deposit Southern great Xing’an range

Age,Genesis,and Tectonic Setting of the Mo-W Mineralized Dongshanwan Granite Porphyry from the Xilamulun Metallogenic Belt,NE China

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Journal of Earth Science 2017年第3期28卷 433-446页

作者： Xuebing Zhang keyong wang Chengyang wang Wen Li Qi YU Yicun wang Jianfeng Li Duo Wan Guanghuan Huang College of Earth Sciences Jilin UniversityChangchun 130061China Department of Earthquake Seienee Institute of Disaster Prevention Science and TechnologyBeijing 101601China Inner Mongolia Shandong Gold Minerals Survey Co.Ltd. Chifeng 024005China Heilongjiang Institute of Regional Geology Survey Harbin 150080China College of Urban and Environmental Sciences Liaoning Normal UniversityDalian 116029China

The Xilamulun molybdenum polymetallic metallogenic belt in eastern Inner Mongolia forms one of the most important Mo metallogenic belts in northeastern China. The Dongshanwan porphyry Mo-W polymetallic deposit, in the northeastern part of the Xilamulun metallogenic belt, occurs along the periphery of a granite porphyry and consists of Mo-W-Ag sulfide and oxide disseminations and veinlets in hydrothermal assemblages. LA-ICP-MS zircon U-Pb dating of the Dongshanwan granite porphyry yields a crystallization age of 142.15± 0.91 Ma, whereas molybdenite Re-Os isotopic dating model ages are of 139.9–141.5 Ma and an isochron age is of 140.5± 3.2 Ma（MSWD=1.2）. The age consistency indicates that the Dongshanwan deposit was a product of Early Cretaceous magmatism. The Dongshanwan granite porphyry is a high-alkali high-potassium intrusion and has high SiO_2（75.39 wt.%–76.15 wt.%）, low Al_2O_3（12 wt.%–13 wt.%）, Ba, Ti, P, and Sr contents, with negative Eu anomalies. The Y/Nb ratios are comparable to those of average continental crust and island arc basalts, corresponding to type-A2 granites. Our geochemical data indicate that the granite porphyry emplaced in an Early Cretaceous post-orogenic extensional environment following Mongol-Okhotsk oceanic subduction and subsequent continental collision.

关键词： Dongshanwan porphyry Mo-W deposit zircon U-Pb dating Re-Os dating geochemistry Xilamulun metallogenic belt

Discovery and Significance of High CH_4 Primary Fluid Inclusions in Reservoir Volcanic Rocks of the Songliao Basin,NE China

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Acta Geologica Sinica(English Edition) 2007年第1期81卷 113-120页

作者： wang Pujun HOU Qijun wang keyong CHEN Shumin CHENG Rihui LIU Wanzhu LI Quanlin Earth Sciences College Jilin University Changchun Jilin 130061 Jilin Petroleum Company Songyuan Jilin 138000 Daqing Petroleum Company Daqing Heilongjiang 163712

Comparing compositions of the fluid inclusions in volcanic rocks to the contents and isotopes of the gases in corresponding volcanic reservoirs using microthermometry, Raman microspectroscopy and mass spectrum analysis, we found that：（1） up to 82 mole% methane exists in the primary inclusions hosted in the reservoir volcanic rocks; （2） high CH4 inclusions recognized in the volcanic rocks correspond to CH4-bcaring CO2 reservoirs that are rich in helium and with a high ^3He/^4He ratio and which show reversed order of 813C in alkane; （3） in gas reservoirs of such abiotic methane （〉80%） and a mix of CH4 and CO2, the enclosed content of CH4 in the volcanic inclusions is usually below 42 mole%, and the reversed order of δ^13C in alkane is sometimes irregular in the corresponding gas pools; （4） a glassy inclusion with a homogeneous temperature over 900℃ also contains a small portion of CH4 although predominantly CO2. This affinity between gas pool and content of inclusion in the same volcanic reservoirs demonstrates that magma-originated gases, both CH4 and CO2, have contributed significantly to the corresponding gas pools and that the assumed hydrocarbon budget of the bulk earth might be much larger than conventionally supposed.

关键词： Songliao Basin reservoir volcanic rocks fluid inclusions methane (CH4) carbon dioxide (CO2) abiogenic origin natural gas

Chronology and Geochemistry of the Berezitovoe Polymetallic Gold Deposit in Eastern Siberia, Russia and its Geological Significance

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Acta Geologica Sinica(English Edition) 2017年第5期91卷 1733-1750页

作者： ZHANG Guobin YANG Yanchen Alexander S.VAKH Vadim G. KHOMICH wang keyong YE Songqing HAN Shijiong Department of Geology Liaoning Technical University College of Earth Sciences Jilin University Far East Geological Institute Far East Branch Russian Academy of Sciences

The Berezitovoe deposit is a large-sized Au-Ag-Zn-Pb deposit in the east of the SelengaStanovoi superterrane, Russia. Au-Ag orebodies are hosted by tourmaline-garnet-quartz-muscovite metasomatic rocks; Zn-Pb orebodies are hosted by granodiorites, porphyritic granites and tourmalinegarnet-quartz-muscovite metasomatic rocks. These orebodies are surrounded by wall rocks dominated by the Tukuringra Complex granodiorites, porphyritic granites, and gneissic granodiorites. The alteration includes silicification and garnet, sericitization chloritization, carbonatization and kaollinization. LA-ICP-MS U-Pb zircon dating indicates that the gold mineralization can be divided into two stages in the Berezitovoe polymetallic gold deposit（at 363.5 ± 1.5 Ma, and133.4± 0.5）.Hornblende-plagioclase gneisses of the Mogocha Group in the study area underwent Paleoproterozoic metamorphism（at 1870 ± 7.8 and 2400 ± 13 Ma）, gneissic granodiorite of the Tukuringra Complex yields a late Paleozoic magmatic age（at 379.2 ± 1.1 Ma）,and subalkaline porphyritic granitoid of the Amudzhikan Complex yield late Mesozoic magmatic ages（133-139 and 150-163 Ma）. Granodiorites of the Tukuringra Complex in the study area have high concentrations of SiO_2（average of 60.9 wt%）, are aluminum-oversaturated（average A/CNK of 1.49）, are enriched in the large ion lithophile elements（e.g.,K, Rb, and Ba）, U, Th, and Pb, are depleted in high field strength elements（e.g., Ta, Nb, and Ti）, and have slightly negative Eu and no Ce anomalies in chondrite-normalized rare earth element *** inclusions from quartz veins include three types： aqueous two-phase, CO2-bearing three-phase,and pure CO2. Aqueous two-phase inclusions homogenize at 167℃-249℃ and have salinities of 4.32%-9.47% NaCl equivalent, densities of 0.86-0.95 g/cm^3, and formed at depths of 0.52-0.94 km. In comparison, the CO2-bearing three-phase inclusions have homogenization temperatures of 265℃-346℃,salinities of 7.14%-11.57% NaCl equivalent, and total

关键词： Geochemistry U-Pb zircon dating fluid inclusions Berezitovoe polymetallic gold deposit Eastern Siberia Russia

Study on fluid inclusions and features of ore-forming fluids of Diakha gold deposit,Mali,West Africa

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Global Geology 2018年第1期21卷 1-13页

作者： Yassa Konare wang keyong wang Zhigao College of Earth Sciences Jilin University

The Diakha gold deposit is located in the southeastern margin of the highly prospective/productive Paleoproterozoic( Birimian) Kédougou-Kéniéba Inlier. Gold mineralization is closely associated with a narrow,sub-vertical,NE-trending shear corridor. The corridor is to the east of a sinistrally reactivated D1 west-dipping fault,which emanated from SMSZ( D2 reverse-sinistral regional structure). The mineralization is hosted by fine-grained sandstone and breccias units associated with a moderate to strong hydrothermal alteration,which is dominated by albitization,carbonization,silicification,hematization,and chloritization. Diakha field data and laboratory analysis suggest the existence of two main stages of hydrothermal mineralization,namely stage I and stage II. Stage I is of a breccias type of mineralization and represents the major gold bearing stage. It isassociated with hematite + calcite + ankerite/dolomite and quartz pervasive alteration,controlled by the predominantly brittle-ductile NNE to NE-shearing structures of the main deformation event D2. Stage II is represented by the second minor hydrothermal episode,showing local quartz-tourmaline and tremolite alteration which is structurally controlled by the dipping S3 cleavage formed during D3 deformation. Petrographic and microthermometric studies of fluid inclusions from quartz veins reveal the presence of early dominant carbonic CO2-pure and aqueous-carbonic CO2-rich( LCO2+ VCO2± H2 O) in stage I. The exclusively aqueous H2 O + Na Cl ± CO2 fluid inclusions( L-type) are observed in stage II. Interpretation shows that the ore-forming fluids originated from a homogeneous H2 O-CO2 fluid during phase separation,with trapping temperatures of 250℃ to 280℃ and low salinity( < 6 wt % Na Cl equiv),indicating an estimated trapping pressure for the deposit between 610 to 800 bars.

关键词： Kédougou-Kéniéba Inlier Diakha deposit hydrothermal alteration Au-mineralization fluid inclusions