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Petrogenesis and Economic Potential of the Sangong MaficUltramafic Intrusion in the Eastern Tianshan, Central Asian Orogenic Belt: Constraints from Mineral, Whole-Rock, and PGE Geochemistry

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Journal of Earth Science 2024年第3期35卷 850-865页

作者： Guochao Zhou yuwang wang Jingbin wang Yu Shi Hongjing Xie Dedong Li Yong Fu Pan Wu College of Resources and Environmental Engineering Guizhou UniversityGuiyang 550012China Technic Research Center for Deep Resources Exploration in Non-ferrous Metal Mines Beijing Institute of Geology for Mineral Resources Co.Ltd.Beijing 100012China Sino-Zijin Resources Ltd. Beijing 100012China State Key Laboratory of Nuclear and Environment East China University of TechnologyNanchang 330013China

The Sangong Cu-Ni sulfide mineralized mafic-ultramafic intrusion is located on the southern margin of the Bogeda-Harlik belt,eastern Tianshan,*** intrusion is a well-differentiated complex and is comprised of leucogabbro,gabbro,olivine gabbro,Pl-bearing peridotite,and Pl-bearing *** Pl-bearing pyroxenite hosts both irregularly disseminated sulfide and round droplet *** intrusive rocks have a wide range of SiO_(2)(42.1 wt.%-50.48 wt.%)and MgO(6.21 wt.%-22.11 wt.%),and are enriched in light rare earth elements(LREE),large-ion lithophile elements(LILE;e.g.,Rb,Ba,Sr,and Pb),and palladium platinum group elements(PPGE)but depleted in high-field-strength elements(HFSE;e.g.,Nb,Ta,and Ti)and iridium PGEs(IPGE).These geochemical characteristics indicate that the Sangong mafic-ultramafic intrusion was derived from high degree of partial melting of depleted mantle and interacted with subduction-related *** low Pd/Ir(3.21-27.44)but high Ni/Cu(1.64-24.16)ratios,combined with the olivine crystals with low Fo(60.88-78.65)and Ni(54.99 ppm-1688.87 ppm)concentrations suggest that the parental magma of the Sangong intrusion were likely high MgO basaltic in composition that experienced extensive evolution prior *** Ce/Pb ratios(5.8-13.6)and Nb/U ratios(11.6-30.3)of the intrusive rocks all range between MORB and crustal values,the Nb/Yb and Th/Yb values are close to the lower crust values,together with the low Se/S ratios[(17-100)×10^(-6))]suggest that the magma experienced assimilation not only in mantle source but also in conduit,but the degree of crustal contamination is *** Cu/Pd ratios of the rocks range from 3.9×10^(4) to 10.8×10^(4),and the Cu/Zr ratios of Pl-bearing pyroxenite in the Sangong intrusion are>1,combined with the presence of sulfide droplets in the Pl-bearing pyroxenite,indicating the parental magma experienced sulfide saturation and the economical ore bodies may present in the depth of the ***,gi

关键词： Sangong mafic-ultramafic intrusion deposits geochemistry PGE economic potential eastern Tianshan.

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Deep learning-based optical aberration estimation enables offline digital adaptive optics and super-resolution imaging

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Photonics Research 2024年第3期12卷 474-484页

作者： CHANG QIAO HAOYU CHEN RUN wang TAO JIANG yuwang wang DONG LI Department of Automation Tsinghua UniversityBeijing 100084China Institute for Brain and Cognitive Sciences Tsinghua UniversityBeijing 100084China National Laboratory of Biomacromolecules New Cornerstone Science LaboratoryCAS Center for Excellence in BiomacromoleculesInstitute of BiophysicsChinese Academy of SciencesBeijing 100101China College of Life Sciences University of Chinese Academy of SciencesBeijing 100049China Beijing National Research Center for Information Science and Technology Tsinghua UniversityBeijing 100084China

Optical aberrations degrade the performance of fluorescence *** adaptive optics(AO)leverages specific devices,such as the Shack–Hartmann wavefront sensor and deformable mirror,to measure and correct optical ***,conventional AO requires either additional hardware or a more complicated imaging procedure,resulting in higher cost or a lower acquisition *** this study,we proposed a novel space-frequency encoding network(SFE-Net)that can directly estimate the aberrated point spread functions(PSFs)from biological images,enabling fast optical aberration estimation with high accuracy without engaging extra optics and image *** showed that with the estimated PSFs,the optical aberration can be computationally removed by the deconvolution ***,to fully exploit the benefits of SFE-Net,we incorporated the estimated PSF with neural network architecture design to devise an aberration-aware deeplearning super-resolution model,dubbed *** demonstrated that the combination of SFE-Net and SFT-DFCAN enables instant digital AO and optical aberration-aware super-resolution reconstruction for live-cell imaging.

关键词： optics resolution enable

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西南天山陆相砂砾岩型铜铅锌矿床成矿特征与成矿作用研究进展

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吉林大学学报（地球科学版） 2024年第4期54卷 1177-1198页

作者：赵路通王京彬王玉往中色紫金地质勘查(北京)有限责任公司北京100012 紫金矿业集团股份有限公司福建厦门361000 北京矿产地质研究院有限责任公司北京100012

西南天山造山带中—新生代沉积盆地(库孜贡苏盆地、乌鲁—乌恰盆地、柯坪盆地、库车盆地)发育包括乌拉根超大型铅锌矿床和萨热克大型铜矿床在内的一系列以沉积岩容矿的铜铅锌矿床,构成我国西北地区一条重要的贱金属成矿带。已有研究表... 详细信息

西南天山造山带中—新生代沉积盆地(库孜贡苏盆地、乌鲁—乌恰盆地、柯坪盆地、库车盆地)发育包括乌拉根超大型铅锌矿床和萨热克大型铜矿床在内的一系列以沉积岩容矿的铜铅锌矿床,构成我国西北地区一条重要的贱金属成矿带。已有研究表明区域上沉积岩容矿型铜铅锌矿床主要包括砾岩型铜矿床、砂岩型铅锌矿床和砂岩型铜矿床3个类型,本文在简要介绍各类型矿床主要地质特征的基础上,重点总结了其在成矿时代、成矿流体性质和来源及成矿物质(金属和硫)来源等方面的研究进展。结果表明:区域上砾岩型铜矿床形成于早白垩世末,即形成于盆地构造转换期,砂岩型铅锌矿床和铜矿床形成于中新世晚期,其形成与大型逆冲推覆构造关系密切。砾岩型铜矿床成矿流体以有机流体为主,砂岩型铅锌矿床成矿流体以盆地建造水为主,而砂岩型铜矿床成矿流体则表现为有机流体和盆地建造水混合的特征,成矿过程有大气降水的加入。造山带物质和沉积硫酸盐是区内各类型矿床金属及硫的主要来源。本文指出应加强砂岩型铜矿床成矿年代和砂岩型铅锌矿床成矿作用的研究,以及与新发现的海相砂岩型铜矿床的对比研究。

关键词：西南天山造山带砾岩型矿床砂岩型矿床铜铅锌矿床成矿作用成矿时代

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造山型金矿容矿建造分类、成矿模式及找矿勘查

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地质学报 2024年第3期98卷 898-919页

作者：王京彬王玉往李庆哲林寿洪王晨昇张会琼李德东紫金矿业集团股份有限公司福建上杭364200 北京矿产地质研究院有限责任公司北京100083

造山型金矿床指造山过程中形成的后生脉状金矿床,受构造、建造双重控制,是全球最重要的金矿勘查类型。按容矿岩石建造的不同,造山型金矿可分为绿岩带型(包括绿片岩型、BIF型和花岗-片麻岩型3个亚类型)、浊积岩型、碳酸盐岩型和浅成侵入... 详细信息

造山型金矿床指造山过程中形成的后生脉状金矿床,受构造、建造双重控制,是全球最重要的金矿勘查类型。按容矿岩石建造的不同,造山型金矿可分为绿岩带型(包括绿片岩型、BIF型和花岗-片麻岩型3个亚类型)、浊积岩型、碳酸盐岩型和浅成侵入岩型,构成了造山型金矿床完整的成矿谱系。不同类型之间具有紧密的时空和成因联系,可互为找矿标志。绿岩组合和浊积岩系具有高的金丰度,既是容矿岩系,也是重要的矿源层,多类型造山作用驱动大规模区域性流体活动,造就了造山型金矿省/巨型成矿带,岩浆流体叠加和“热机效应”是形成超大型金矿床的重要因素。构建了多源区域性流体+岩浆流体叠加的地壳连续成矿模型和造山型金矿区域成矿模式,强调了多旋回造山作用对造山型金矿的成矿意义。“富金矿源层+剪切变形带+浅成侵入岩”组合是大型金矿系统的勘查选区标志,靶区优选的目标是获取找矿潜力大的优质矿权;矿权区勘查的优先目标是发现可规模化露天开采的矿床(体),通过化探异常评价和浅钻追索次生富集带,可快速发现主矿体;矿区深部找矿(深度>300 m)潜力巨大,主攻目标是资源量大、品位高的热液通道相的厚板状或筒状矿体。

关键词：造山型金矿容矿建造成矿系统成矿流体金矿勘查

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In-situ LA-ICP-MS trace element and oxygen isotope signatures of magnetite from the Yamansu deposit,NW China,and their significance

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Acta Geochimica 2020年第5期39卷 599-615页

作者： Zhiyuan Sun yuwang wang Lingli Long Technic Research Center for Deep Resources Exploration in Non-ferrous Metal Mines Beijing Institute of Geology for Mineral Resources5 YardBeiyuanChaoyang DistrictBeijing 100012China

The Yamansu iron deposit is hosted in submarine volcanic rocks in the Aqishan–Yamansu belt of Eastern Tianshan,NW China.A geological cross-section for the Carboniferous strata in the ore district shows that ore bodies in the Yamansu deposit are hosted in andesitic crystal tuff of the third cycle of the Carboniferous Yamansu *** indicates an association between mineralization and *** orebodies are strata bound and lensoid and generally share the occurrence state of the host *** mineralization mainly occurs asbreccia ores,ores in the mineralized volcanic rocks,massive ores,and sulfide-rich ores according to their structures and sequences of *** element compositions of magnetite from various types of ores were determined by *** dataset indicates thatdifferent types of magnetite havedistinct trace element contents correlated to their formation *** crystals from breccia ores have high Ti,Ni,V,Cr,and Co and low Si,Al,Ca,and Mg contents,indicating crystallization from a volcanic magmatic eruption,which is consistent with field evidence of coexisting altered volcanic *** crystals from ores in the mineralized volcanic rocks have moderate Ti,Ni,V,Cr,and Co *** contrast,magnetite from massive ores and sulfide-rich ores have low concentrations of Ti,Cr,Ni,and V,high concentrations of Si,Al,Ca,and Mg,and evidence of hydrothermal ***-situ magnetite compositions imply a magmatic-hydrothermal *** d18 O values for magnetite grains from Yamansu vary(?1.3 to?7.0%),they all plot in the range field of volcanic iron deposits,and they also record a magmatic-hydrothermal *** compositions of Yamansu magnetites are interpreted as controlled mainly by temperature,fluid,host rock buffering,oxygen fugacity,and sulfur *** metallogenic conditions of the Yamansu deposit changed from high temperature and low oxygen fugacity to low temperature and high oxygen fugacit

关键词： Magnetite Trace element composition LAICP-MS Oxygen isotope Yamansu iron deposit Eastern Tianshan

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柴北缘青山造山型金-铅矿床成矿机制:矿石和黄铁矿组成约束

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岩石学报 2024年第6期40卷 1712-1732页

作者：张志超龙灵利杨立强王玉往祝新友童海奎李顺庭马财北京矿产地质研究院有限责任公司有色金属矿山深部资源勘查工程技术研究中心北京100012 中国地质大学地质过程与矿产资源国家重点实验室深时数字地球前沿科学中心北京100083 中色紫金地质勘查(北京)有限责任公司北京100012 青海省地质调查局西宁810001

青山金铅矿床位于柴北缘滩间山矿集区内,是全球罕见的金-铅共/伴生的造山型矿床。矿体主要赋存于古元古代达肯大坂群片岩中,受到北西西向断裂控制,发育蚀变岩和石英脉两种矿石类型,矿石中硫化物较为发育,常见黄铁矿、褐铁矿、方铅矿、... 详细信息

青山金铅矿床位于柴北缘滩间山矿集区内,是全球罕见的金-铅共/伴生的造山型矿床。矿体主要赋存于古元古代达肯大坂群片岩中,受到北西西向断裂控制,发育蚀变岩和石英脉两种矿石类型,矿石中硫化物较为发育,常见黄铁矿、褐铁矿、方铅矿、黄铜矿、闪锌矿等。黄铁矿作为该矿床的主要载金矿物,其地球化学特征可以指示金赋存状态,揭示成矿流体性质和矿床成因。为此,选取ZK2103和ZK3701钻孔中不同深度空间的矿石和围岩样品,分别进行成矿元素全岩测试和黄铁矿的电子探针分析工作。矿石和围岩稀土元素配分模式曲线都为右倾型,呈现明显的Eu负异常,未见Ce异常,说明成矿流体为变质流体且不含海水。矿石相对富集Au、Ag、Cu、Pb、Zn、As、Co、Bi、Sb、W、Ni、Sr、Cd、V元素,而Sn、Mo、Cr元素含量则相对偏低。矿石和围岩中黄铁矿的S/Fe值小于2.0,表现出亏S和富Fe的特征;黄铁矿的Au/Ag值均大于0.5,Co-Ni图解结果指示黄铁矿为热液成因。金主要以纳米粒子形式赋存,少量以固溶体形式存在。金在流体中以Au(HS)-2的形式运移,流体混合作用破坏了Au(HS)-2的稳定性,致使金的沉淀。高硫的成矿流体可以运移部分的铜、铅、锌。在金沉淀后,成矿流体温度和压力降低,致使铅开始沉淀。但由于该流体运移铅、锌的能力有限,青山金铅矿床铅矿体的规模较小。硫-铅同位素结果显示成矿物质来源于围岩,区域上金龙沟矿区和青龙沟矿区围岩中铅锌含量较低,所以未形成铅矿体。

关键词：成矿元素特征成矿机制造山型矿床青山金铅矿床柴达木北缘

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豫西小秦岭地区大湖金(钼)矿床Re–Os和Ar–Ar同位素定年:对成矿期次的限定

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中国地质 2024年第4期51卷 1411-1421页

作者：谢亘喻光明施光海杨国强王玉往王建石连武中国地质调查局地球物理调查中心河北廊坊065000 中国地质调查局自然资源综合调查指挥中心北京100055 中国地质大学(北京)珠宝学院北京100083 河南省地质矿产勘查院河南郑州450000 北京矿产地质研究院有限责任公司北京100012 卡迪夫大学地球与海洋科学学院英国卡迪夫CF103AT

【研究目的】位于华北克拉通南缘的东秦岭钼矿带是全球第二大钼矿带,其北缘蕴含有著名的小秦岭造山型金矿田。近年来通过地质调查工程的实施,在小秦岭大湖金(钼)矿区深部发现具有工业意义的钼矿化,并已开始开采钼矿,限定其成矿期次,有... 详细信息

【研究目的】位于华北克拉通南缘的东秦岭钼矿带是全球第二大钼矿带,其北缘蕴含有著名的小秦岭造山型金矿田。近年来通过地质调查工程的实施,在小秦岭大湖金(钼)矿区深部发现具有工业意义的钼矿化,并已开始开采钼矿,限定其成矿期次,有助于研究金钼成矿规律。【研究方法】本文基于小秦岭地区危机矿山深部找矿工作,研究了金钼深部成矿模式,分析了辉钼矿Re–Os和钾长石^(40)Ar/^(39)Ar同位素定年在划分成矿期次中的作用。【研究结果】来自S35矿脉的6件辉钼矿样品Re–Os模式年龄介于(192.3±2.9)~(223.4±3.2)Ma,等时线年龄为(214.9±5.2)Ma(MSWD=0.77),来自F5矿脉中钾长石晶体^(40)Ar/^(39)Ar坪年龄为(95.22±1.16)Ma,其等时线年龄为(95.10±4.57)Ma。【结论】辉钼矿年龄代表了印支期钼矿化事件,钾长石年龄反映存在燕山中期新的构造-岩浆-热事件,这期热事件对于金钼矿床的成矿活动可能有积极意义,叠加改造了印支期的钼矿化事件。结合手标本和BSE图像分析结果,认为大湖金(钼)矿区与金钼矿化相关的热事件应不低于两期。

关键词：钼矿化 Re–Os同位素年龄 ^(40)Ar ^(39)Ar同位素年龄印支期燕山期矿产勘查工程大湖金(钼)矿床小秦岭豫西

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Fluid-melt Inclusions in Fluorite of the Huanggangliang Skarn Iron-Tin Deposit and Their Significance to Mineralization

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Acta Geologica Sinica(English Edition) 2001年第2期75卷 204-211页

作者： wang Lijuan wang Jingbin wang yuwang MAO Qian Institute of Geology and Geophysics Chinese Academy of SciencesA-11 Datun RoadBeijing 100101 Beijing Institute of Geology for Mineral Resources Beijing 100012

For the first time, fluid-melt inclusions are found in fluorite of the Huanggangliang skarn iron-tin deposit (HSID). The fluorite was formed in the main stage of mineralization, named the hydro-skarnization stage. The inclusions contain various components such as Fe, Mg and Cr from deep sources. The melts of primary inclusions are mainly Ca- and F-rich and those of secondary inclusions tend to become Si-rich. During this evolution process, the melts and iron daughter minerals decreased and even vanished. These facts reveal that the evolution of the primary mineralizing fluids and the differentiation of the fluids and melts are the main factors leading to the deposition of Fe, Sn and other elements. This discovery confirms the magmatic genesis of the HSID and has filled in the gaps in the research of magmatogenic skarn deposits and furnished new methods for such research. Furthermore, it has enlarged the scope of the research on fluid inclusions.

关键词： skarn deposit fluorite fluid-melt inclusion daughter mineral melt composition

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Metallogenic Series Related to Permian Mafic Complex in North Xinjiang:Post-collisional Stage or Mantle Plume Result?

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Acta Geologica Sinica(English Edition) 2008年第4期82卷 788-795页

作者： wang yuwang wang Jingbin wang Lijuan LONG Lingli School of the Earth Sciences and Resources China University ofGeosciences Beijing 100083 China Beijing Institute of Geology for Mineral Resources Beijing 100012 China

There are four deposit types related to a Permian mafic complex in northern Xinjiang, i.e., copper-nickel sulfide deposit, vanadic titanomagnetite deposit, magnetite （-cobalt） deposit and Cu-Ni- VTiFe composite deposit. The deposits are distributed spanning tectonic units with close and consecutive metallogenic ages. A transitional deposit type can occur among the end-member deposits. Trace elements of host rocks show that they can derive from similar source area. Hence, they constitute a particular metallogenic series related to a mafic-ultramafic complex that is also a symbol series of the post-collisional stage of the Central Asia Metallogenic Province （CAMP）. The metallogenic ages of the series are between 260 Ma and 300 Ma throughout the Permian. Unlike mineralization from a mantle plume, the metallogenic period of this series spans at least 40 Ma. Compared with related deposits of the Emeishan mantle plume, the North Xinjiang series has a similar ore-forming element assemblage but has preferably developed Cu-Ni sulfide deposits rather than vanadic titanomagnetite deposits. In concomitance with this series, North Xinjiang area has developed a set of syntectonic Au-Cu-Mo metallogenic series related to a felsic volcanic-intrusive complex, which might indicate that there is no direct relationship with mantle plume activity. From early to late, i.e., the sequence of copper-nickel sulfide to magnetite （-cobalt） to vanadic titanomagnetite deposit, the host rock series evolves from mafic-ultramafic and tholeiite series to mafic and alkalic series, the ~REE content tends to increase with increasing of REE fractionation, and some of the trace elements （particularly LIL） also show an increasing tendency. The above evolutionary regularity possibly reflects a course where the magma source deepens and thermal interface moves down, energy gradually exhausts, and neo-continental crust forming in the postcollision stage tends to stabilize.

关键词： metallogenic series mafic complex mantle-derived magma post-collision Permian North Xinjiang China

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Late Triassic Magma Mixing and Fractional Crystallization in the Qingchengzi Orefield,Eastern Liaoning Province:Regional Petrogenetic and Metallogenic Implications

引用

Journal of Earth Science 2021年第1期32卷 144-157页

作者： Hongjing Xie yuwang wang Dedong Li Guochao Zhou Zhichao Zhang Beijing Institute of Geology for Mineral Resources Beijing 100012China Deep Exploration Technic Center for Non-Ferrous Mines Beijing 100012China School of Earth Sciences and Resources China University of GeosciencesBeijing 100083China

The Qingchengzi orefield is an important Pb-Zn-Au-Ag polymetallic orefield in NE *** Indosinian magmatism has formed the Shuangdinggou batholith and the Xinling stock,as well as dikes of quartz monzonite porphyry and *** to petrographic characteristics,the Shuangdinggou intrusion can be divided into the main suite and the central *** U-Pb dat-ing yielded crystallization ages of 215.0-220.9 Ma for these various Qingchengzi magmatic units,which are within analytical error and represent coeval *** Shuangdinggou main suite contains abundant mafic microgranular enclaves(MMEs)and shows features of magma ***,the major oxide contents of the MMEs and their quartz monzonite host show well-defined linear frac-tionation *** REE and trace element patterns of the MMEs and their host are similar,which demonstrates certain degree of geochemical homogenization between the two during magma *** Shuangdinggou main suite shares similar geochemical characteristics with typical high Ba-Sr gra-nites(Ba=1082 ppm-2051 ppm,Sr=803 ppm-886 ppm),and was likely originated from the mixing between a melt derived from partial melting of the thickened lower crust and the enriched *** central suite was likely formed by fractional crystallization of the main-suite *** Xinling in-trusion may represent a branch of the Shuangdinggou intrusion and has the same genesis as the central *** quartz monzonite porphyries geochemically mimic the Shuangdinggou main suite,and may also be an epioic facies of the Shuangdinggou *** MMEs and lamprophyres may have been derived from incomplete magma *** of the Pb-Zn and Au-Ag deposits in the Qing-chengzi orefield may have been related to the granite/quartz monzonite porphyries near the Shuangdinggou intrusion,which were formed by magma mixing and fractional crystallization.

关键词： Qingchengzi orefield Shuangdinggou intrusion magma mixing mafic microgranular enclave(MME) fractional crystallization

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