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The gold-telluride connection:Evidence for multiple fluid pulses in the Jinqingding telluride-rich gold deposit of Jiaodong Peninsula,Eastern China

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Geoscience Frontiers 2024年第3期15卷 146-165页

作者： wenyan cai Mingchun Song M.Santosh Jian Li School of Resources and Environmental Engineering Shandong University of TechnologyZibo 255049China Hebei Key Laboratory of Strategic Critical Mineral Resources Hebei GEO UniversityShijiazhuang 050031China School of Earth Sciences and Resources China University of Geosciences Beijing29 Xueyuan RoadBeijing 100083China Department of Earth Science University of AdelaideAdelaide SA 5005Australia

The mechanism of gold migration,enrichment,and precipitation in forming world-class gold deposits has been a topic of wide interest,particularly where these deposits are abundant in *** Jiaodong Peninsula in eastern China hosts some of the world-class gold deposits among which the Jinqingding deposit is one of the best examples with substantial telluride mineralization and thus provides opportunity to investigate the genetic connection between tellurium and gold *** orebody in this deposit is hosted in the NE-NNE-trending Jiangjunshi-Quhezhuang fault with the Jurassic Kunyushan granitic pluton as wall *** deposit involved three mineralization stages as inferred from assemblages and crosscutting relationships between *** stages are:(I)pre-ore gold-poor quartz-pyrite veins,(II)main ore auriferous quartz-pyrite-Te/Bi-minerals±sphalerite±chalcopyrite±barite±marcasite veins,and(III)post-ore quartz-calcite *** present here the textural,isotopic,and geochemical variations of different stages/generations of pyrite based on scanning electron microscopy-energy dispersive spectroscopy(SEM-EDS),electron probe microanalysis(EPMA),and laser ablation inductively coupled plasma mass spectrometry(LA-ICP-MS).Pyrite in the Jinqingding deposit displays distinct ***1a shows a porous and dissolution-reprecipitation texture in the core,whereas Py1b exhibits a smooth and flat *** analysis reveals contrasting elemental compositions,with Py1a characterized by low Au(avg.0.14 ppm),As(avg.15.57 ppm),Ag(avg.17.71 ppm),and Te(avg.19.22 ppm)contents,but elevated Co(avg.1068.10 ppm)and Ni(224.12 ppm)concentrations,and variable sulfur isotopic composition(δ^(34)SV-CDT=9.54‰-12.12‰).Conversely,Py1b displays increased concentrations of these elements and a more concentratedδ^(34)SV-CDT value(11.99‰-12.23‰),possibly associated with weak coupled dissolution-reprecipitation(CDR)*** Stage II,pyrite can be further categorized

关键词： Episodic fluid pulses Sulfur reservoir Gold-Te precipitation Jinqingding deposit Jiaodong Peninsula

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服装理化性能的更新标准解读

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纺织检测与标准 2024年第3期10卷 37-41页

作者：蔡雯嫣上海纺织集团检测标准有限公司上海200082

对GB/T 21294—2024《服装理化性能的检验方法》、GB/T 21295—2024《服装理化性能的技术要求》与GB/T 21294—2014、GB/T 21295—2014进行了对比解读。分析了服装的基本性能、功能性能、安全性能3个方面的主要差异,归纳总结了一些更新... 详细信息

对GB/T 21294—2024《服装理化性能的检验方法》、GB/T 21295—2024《服装理化性能的技术要求》与GB/T 21294—2014、GB/T 21295—2014进行了对比解读。分析了服装的基本性能、功能性能、安全性能3个方面的主要差异,归纳总结了一些更新扩充、调整删除的性能及技术要求,为服装生产、检测和标准化工作提供参考。

关键词：标准服装理化性能对比解读

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鲁西地区沂南金矿床成因:硫化物矿石与围岩稀土和微量元素的制约

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地质通报 2024年第6期43卷 896-913页

作者：李亚东马明蔡文艳高继雷张照录孙祥彪山东省第一地质矿产勘查院山东济南250100 山东省富铁矿勘查技术开发工程实验室山东济南250100 山东理工大学资源与环境工程学院山东淄博255000 自然资源部战略性金属矿产找矿理论与技术重点实验室/中国地质大学(北京) 北京100083 呼伦贝尔山金矿业有限公司内蒙古呼伦贝尔022357

沂南金矿床为鲁西地区典型的矽卡岩型矿床,产于早白垩世中酸性杂岩与新太古界—寒武系接触带及其附近。本次利用岩/矿石稀土和微量元素组成,示踪成矿物质来源及成矿流体地球化学性质。结果显示,成矿的闪长玢岩负Eu异常不显著,且早矿化... 详细信息

沂南金矿床为鲁西地区典型的矽卡岩型矿床,产于早白垩世中酸性杂岩与新太古界—寒武系接触带及其附近。本次利用岩/矿石稀土和微量元素组成,示踪成矿物质来源及成矿流体地球化学性质。结果显示,成矿的闪长玢岩负Eu异常不显著,且早矿化阶段发育大量磁铁矿,暗示早阶段成矿流体具有氧化性特征。晚(金)矿化阶段的黄铁矿和黄铜矿相对富集轻稀土元素和高场强元素,负Eu异常显著,Ce异常不明显,且Hf/Sm、Nb/La值大于1,显示含F-的还原性流体特征。矿石的Y/Ho、Zr/Hf和Nb/Ta值变化较大,且黄铁矿Co/Ni>10,表明成矿流体源于岩浆水和大气降水的混入。矿石与赋矿围岩具有相似的稀土元素配分模式和微量元素地球化学行为,且具有相同范围/趋势的微量元素比值,说明沂南杂岩体和碳酸盐岩提供了必要的成矿物质。综上,沂南金矿床的成矿过程得到了较好的约束,同时也对区域范围内金矿成因有一定指示意义。

关键词：黄铁矿和黄铜矿稀土和微量元素成矿流体成矿物质来源沂南金矿鲁西地区

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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

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SURVEY OF THE CHINESE ACADEMY OF GEOLOGICAL SCIENCES——Ⅲ. ACTIVITIES IN EXTERNAL GEOSCIENTIFIC EXCHANGES

SURVEY OF THE CHINESE ACADEMY OF GEOLOGICAL SCIENCES——Ⅲ. ...

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作者： cai wenyan

＜正＞In 1983,the Chinese Academy of Geological Sciences carried out 71 items of scientific exchanges with foreign countries,including organiz- ing international symposia at home and attending international meetings held abroad,bilateral and multilateral cooperative projects,lecturing by foreign specialists,study visit to foreign countries,etc.,much more than those in *** main items are described briefly as follows:

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SCIENTIFIC EXCHANGE AND COOPERATIONS WITH FOREIGN COUNTRIES IN 1992

SCIENTIFIC EXCHANGE AND COOPERATIONS WITH FOREIGN COUNTRIES ...

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作者： cai wenyan

＜正＞In the year of 1992,the Chinese Academy of Geological sciences has conducted more than 130 international projects,for which 168 Chinese scientists went abroad and about 150 foreign scientists came to China for academic purposes. Ⅰ.Steady Development in Scientific and Technological Cooperations with the Outside World

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Zircon U-Pb geochronology,geochemistry and petrogenesis of syenogranite from Angeer Yinwula area in Inner Mongolia

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Global Geology 2019年第2期22卷 78-90页

作者： LIU Hanlun WANG Keyong LI Jian cai wenyan TANG Wenhao WANG Changhong College of Earth Sciences Jilin University

The study presents the results of U-Pb dating of zircons and whole-rock geochemical analyses of syenogranite in Angeer Yinwula area, China, with the aim of determining its formation time, petrogenesis and regional setting. Zircon U-Pb data obtained by LA-ICP-MS indicate that the syenogranite formed in the Early Cretaceous(136.1±0.9 Ma). Geochemically, the rock is characterized by high SiO_2(76.63%--77.58%) and Na_2O+K_2O(8.00%--8.32%), low MgO(0.02%--0.04%) and TFe_2O_3(0.51%--0.84%), and is enriched in LREEs and LILEs, depleted in HREEs and HFSEs. It belongs to high-K calc-alkaline, metaluminous-weakly peraluminous, exhibiting an affinity to I-type granite. All these characteristics implied that the syenogranite in this region derived from crust-mantle mixed source. Overall, the regional geology, geochronology and geochemical features suggest that the formation of the syenogranite was related to the subduction of the Paleo-Pacific Ocean.

关键词： syenogranite zircon U-Pb dating geochemistry tectonic setting Angeer Yinwula area Paleo-Pacific Ocean

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Determination of molecular energies via variational-based quantum imaginary time evolution in a superconducting qubit system

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Science China(Physics,Mechanics & Astronomy) 2024年第4期67卷 1-11页

作者： Zhiwen Zong Sainan Huai Tianqi cai wenyan Jin Ze Zhan Zhenxing Zhang Kunliang Bu Liyang Sui Ying Fei Yicong Zheng Shengyu Zhang Jianlan Wu Yi Yin Zhejiang Province Key Laboratory of Quantum Technology and Device School of PhysicsZhejiang UniversityHangzhou 310027China Tencent Quantum Laboratory Shenzhen 518057China

As a valid tool for solving ground state problems,imaginary time evolution(ITE)is widely used in physical and chemical *** ITE-based algorithms in their quantum counterpart have recently been proposed and applied to some real *** experimentally realize the variational-based quantum imaginary time evolution(QITE)algorithm to simulate the ground state energy of hydrogen(H_2)and lithium hydride(Li H)molecules in a superconducting qubit *** H_2 molecule is directly simulated using the 3-qubit circuit with unitary-coupled clusters(UCC)*** also combine QITE with the cluster mean-field(CMF)method to obtain an effective *** Li H molecule is correspondingly simulated using the 3-qubit circuit with hardware-efficient *** comparison,the Li H molecule is also directly simulated using the 4-qubit circuit with UCC ansatz at the equilibrium *** the experimental results show a convergence within 4 iterations,with high-fidelity ground state energy *** a more complex system in the future,the CMF may allow further grouping of interactions to obtain an effective Hamiltonian,then the hybrid QITE algorithm can possibly simulate a relatively large-scale system with fewer qubits.

关键词： quantum computation quantum algorithm superconducting qubit

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福建琅岐岛土地演化与发展趋势

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应用海洋学学报 1989年第3期31卷 87-93页

作者：蔡文焰福建师范大学

本文根据野外调查,并参考前人研究成果,讨论了闽江口琅岐岛的土地分异、土地演化与地质构造和构造运动、水文泥沙运动以及历史因素的关系,分析了今后该岛土地发展的趋势。

关键词：琅岐岛闽江口泥沙运动平均含沙量年输沙量全新世研究成果海蚀阶地野外调查河床相

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生态文明视阈下的国家公园建设策略探析——以祁连山国家公园为例

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科技资讯 2021年第11期19卷 229-231页

作者：蔡文艳中共阿克塞哈萨克族自治县委党校甘肃酒泉736400

祁连山国家公园建设工作的开展,对于推进社会生态文明建设发挥着重要作用,为此,祁连山国家公园建设主体需要重视优化国家公园建设工作,推进生态文明理念与建设实践的紧密融合,充分体现出生态文明对祁连山国家公园建设工作所具有的引导... 详细信息

祁连山国家公园建设工作的开展,对于推进社会生态文明建设发挥着重要作用,为此,祁连山国家公园建设主体需要重视优化国家公园建设工作,推进生态文明理念与建设实践的紧密融合,充分体现出生态文明对祁连山国家公园建设工作所具有的引导作用。该文论述了祁连山国家公园建设对生态文明发展的重要意义,并对生态文明视阈下祁连山国家公园建设策略进行了研究与探讨。

关键词：生态文明国家公园祁连山建设策略

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