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| 1 | Re-Os isotope dating of molybdenites in the Huang-shaping Pb-Zn-W-Mo polymetallic deposit, Hunan Province, South China and its geological significance显示文摘The large-scale Huangshaping Pb-Zn-W-Mo polymetallic deposit is located in the central Nanling min- eralization zone, South China. Six molybdenite samples from the Huangshaping deposit were selected for Re-Os isotope measurement in order to define the mineralization age of the deposit. It yields a Re-Os isochron age of 154.8±1.9 Ma (2σ ), which is in accordance with the Re-Os model ages of 150.9― 156.9 Ma. This age is about 7 Ma younger than their host granite porphyry, which was dated as 161.6±1.1 Ma by zircon U-Pb method using LA-ICPMS. All these ages demonstrate that the Huang- shaping granite and related Pb-Zn-W-Mo deposit occurred in the middle Yanshanian period, when many other granitoid and related ore deposits emplaced and formed, e.g. the Qitianling granite and Furong tin deposit, the Qianlishan granite and giant Shizhuyuan W-Sn-Mo-Bi deposit and Jinchuantang Sn-Bi deposit in the nearby area. They constitute the main part of the magmatic-metallogenic belt of southern Hunan, and represent the large-scale metallogeny in middle Yanshanian in the area. The lower rhenium content in molybdenite of Huangshaping deposit suggests that the ore-forming material was mainly of crust origin. | YAO JunMing HUA RenMin QU WenJun QI HuaWen LIN JinFu DU AnDao | 2007 | Science China Earth Sciences2007，50，4： | 29 |
| 2 | Geochronologic constraints on magmatic intrusions and mineralization of the Zhunuo porphyry copper deposit in Gangdese,Tibet显示文摘In situ zircon U-Pb ages for the recently discovered Zhunuo porphyry copper deposit in the western part of the Gangdese metallogenic belt in Tibet were determined by sensitive high-resolution ion mi-croprobe(SHRIMP) . The ages can be divided into two separate groups,reflecting more than four major tectono-magmatic events in the area. The 62.5±2.5 Ma age of inherited zircons may be related to the volcanic eruption of the Linzizong Group formed shortly after the India-Asia continental collision. The 50.1±3.6 Ma age most likely corresponds to the time of underplating of mantle-derived mafic magma in Gangdese. The 15.6±0.6 Ma age obtained from magmatic zircons is interpreted as the age of crystalli-zation of the Zhunuo ore-forming porphyry. Finally,a molybdenite Re-Os isochron age of 13.72±0.62 Ma is consistent with another zircon U-Pb age of 13.3 ±0.2 Ma,representing the time of copper mineraliza-tion. These ages,in combination with available literature data,indicate that magmatic crystallization and copper mineralization in the Gangdese metallogenic belt became gradually younger westward,and further suggest that the Zhunuo porphyry copper deposit was formed in the same tectonic stage as other porphyry copper deposits in the eastern and central Gangdese belt. This conclusion provides critical information for future exploration of porphyry copper deposits in western Gangdese. | ZHENG YouYe ZHANG GangYang XU RongKe GAO ShunBao PANG YingChun CAO Liang DU AnDao SHI YuRuo | 2007 | Chinese Science Bulletin2007，52，22： | 17 |
| 3 | Os isotopic compositions of a cobalt-rich ferromanganese crust profile in Central Pacific显示文摘187Os/188Os ratios in all sub-layers of the Co-rich ferromanganese crust MP5D17 from Line Seamount in Central Pacific have been systematically determined. The 187Os/188Os values in this crust are highly variable, ranging from 0.4262 to 1.0155. From the bottom to the top, the os-mium isotopic ratios of the crust display a regular variation trend, which correlates well with its changes in structure and texture in the vertical profile. In comparison with the evolu-tion curve of Os isotopic composition in seawater over the past 80 Ma, a similar evolution tendency can be found with respect to the Os isotopic composition of the crust in this study. It is preliminarily concluded that the crust MP5D17 began to grow at about 72 Ma, and underwent three growth hiatuses, corresponding to the geological ages of 64, 53 and 37 Ma, respectively. | FU Yazhou PENG Jiantang QU Wenjun HU Ruizhong SHI Xuefa DU Andao | 2005 | Chinese Science Bulletin2005，50，18： | 13 |
| 4 | Re-Os dating of gold-bearing arsenopyrite of the Maoling gold deposit,Liaoning Province,Northeast China and its geological significance显示文摘The Maoling gold deposit, one of the large gold deposits in eastern Liaoning Province, NE China, is an ar- senopyrite-disseminated gold deposit with a resource of ap- proximately 25 t Au and an average Au grade of 3.2 g/t. Six arsenopyrites closely related to Au mineralization of the Maoling gold deposit are dated by Re-Os technique and de- fine a Re-Os isochron with an age of 2316±140 Ma, which suggests that the deposit was formed in the Paleoproterozoic era rather than in the Indosinian period as some early re- searchers suggested. High initial 187Os/188Os ratio of 1.32±0.48 indicates a crustal derivation of the ore-forming material of the deposit, which may be derived from rocks of the Gaixian formation of the Liaohe Group. Furthermore, the result also implies that the age of the Gaixian Formation in the Maoling district is older than 2316±140 Ma. | YU Gang YANG Gang CHEN Jiangfeng QU Wenjun DU Andao HE Wei | 2005 | Chinese Science Bulletin2005，50，14： | 12 |
| 5 | Geodynamic Background of Intracontinental Cenozoic Alkaline Volcanic Rocks in Laojiezi, Western Yangtze Craton: Constraints from Sr-Nd-Hf-O Isotopes显示文摘The Laojiezi alkaline volcanic rocks, which are located in the intraplate region of the Yangtze craton, coincide with the formation of the Jinshajiang-Ailaoshan-Red River alkaline rock belt. Although this belt has been widely studied by geologists because of its porphyry-related Pb-Ag-Au polymetallic deposit and geotectonic location, the material sources of this belt are still debate. Whole-rock analyses show that these rocks have high total alkali contents(3.73–11.08 wt%), and their aluminum saturation index(ASI) values widely vary from 0.82 to 3.07, which comprise a metaluminous-peraluminous magma series. These rocks are characterized by high K(K2 O/Na2 O>1) and low Ti and Mg contents; enrichment in large-ion lithophile elements, such as Rb, Ba, K and light rare earth elements; and depletion in high field strength elements, such as Ta, Nb, P, and Ti. These rocks exhibit moderate Eu(Eu/Eu*=0.86–1.04) and Ce(Ce/Ce*=0.63–0.96) anomalies. Their(87 Sr/86 Sr)i, εNd(t), zircon εHf(t) and δ18 O values range from 0.70839 to 0.71013, from-10.16 to-12.45, from-19.6 to-5.8, and from 5.69‰ to 8.54‰, respectively, and their Nd and Hf two-stage model ages(TDM2) are 1.67–1.86 Ga and 1.27–2.02 Ga, respectively. These data reflect the primary partial melting of Paleoproterozoic to Mesoproterozoic lower crust with minor residual continental lithospheric mantle and supracrustal metasediments. The lithosphere was likely thickened along the southeastern margin of the Tibetan Plateau following the Indian-Asian continentcontinent collision(65–41 Ma). During the post-collision phase(36–16 Ma), the transition from a compressional to extensional setting triggered the convective removal of the over-thickened CLM beneath the Yangtze craton, which led to the upwelling of asthenospheric materials. This process created alkali-rich and high-K magma through the partial melting of the thickened lower crust. Magma that carried Cu-Au-Pb-Ag minerals was emplaced by strike-slip motion along the E-to W-or ENE-to WSWtrending tectonically weak zone, finally forming an alkaline porphyry Cu-Au-Pb-Ag polymetallic deposit. | YAN Qinggao JIANG Xiaojun LI Chao ZHOU Limin WANG Zhongqiang Sultan Baig SHER QU Wenjun DU ANDao | 2018 | Acta Geologica Sinica(English Edition)2018，92，6： | 12 |
| 6 | Re-Os geochronology of Cu and W-Mo deposits in the Balkhash metallogenic belt,Kazakhstan and its geological significance显示文摘<正>The Central Asian metallogenic domain(CAMD) is a multi-core metallogenic system controlled by boundary strike-slip fault systems.The Balkhash metallogenic belt in Kazakhstan,in which occur many large and super-large porphyritic Cu—Mo deposits and some quartz vein- and greisen-type W—Mo deposits,is a well-known porphyritic Cu—Mo metallogenic belt in the CAMD.In this paper 11 molybdenite samples from the western segment of the Balkhash metallogenic belt are selected for Re—Os compositional analyses and Re—Os isotopic dating.Molybdenites from the Borly porphyry Cu deposit and the three quartz vein-greisen W—Mo deposits—East Kounrad.Akshatau and Zhanet—all have relatively high Re contents(2712—2772μg/g for Borly and 2.267—31.50μg/g for the other three W—Mo deposits),and lower common Os contents(0.670—2.696 ng/g for Borly and 0.0051—0.056 ng/g for the other three).The molybdenites from the Borly porphyry Cu—Mo deposit and the East Kounrad,Zhanet,and Akshatau quartz vein- and greisen-type W—Mo deposits give average model Re—Os ages of 315.9 Ma,298.0 Ma,295.0 Ma,and 289.3 Ma respectively.Meanwhile,molybdenites from the East Kounrad,Zhanet,and Akshatau W—Mo deposits give a Re—Os isochron age of 297.9 Ma,with an MSWD value of 0.97.Re-Os dating of the molybdenites indicates that Cu—W—Mo metallogenesis in the western Balkhash metallogenic belt occurred during Late Carboniferous to Early Permian(315.9—289.3 Ma),while the porphyry Cu—Mo deposits formed at—316 Ma,and the quartz vein-greisen W—Mo deposits formed at ~298 Ma.The Re—Os model and isochron ages thus suggest that Late Carboniferous porphyry granitoid and pegmatite magmatism took place during the late Hercynian movement.Compared to the Junggar-East Tianshan porphyry Cu metallogenic belt in northwestern China,the formation of the Cu—Mo metallogenesis in the Balkhash metallogenic belt occurred between that of the Tuwu-Yandong in East Tianshan and the Baogutu porphyry Cu deposits in West Junggar. Collectively,the large-scale Late Carboniferous porphyry Cu—Mo metallogenesis in the Central Asian metallogenic domain is related to Hercynian tectono-magmatic activities. | Xuanhua Chen Wenjun Qu Shuqin Han Seitmuratova Eleonora Nong Yang Zhengle Chen Fagang Zeng Andao Du Zhihong Wang | 2010 | Geoscience Frontiers2010，1，1： | 10 |
| 7 | Re-Os dating of auriferous pyrite from the Zhenyuan super-large gold deposit in Ailaoshan gold belt,Yunnan Province,Southwestern China显示文摘Zhenyuan gold deposit is the largest super large gold deposit in the Ailaoshan gold belt,but its precise mineralization age is still lack.Re-Os isotopic age of the auriferous pyrite from the Zhenyuan gold deposit was determined by using a high-resolution inductively coupled plasma mass spectrometry(HR-ICP-MS).The pyrite samples were decomposed in carius tubes,Os was separated by distillation and Re was extracted by acetone,respectively.The results show that the Re-Os isochron age is 229±38 Ma(MSWD=2.0,confidence level is 95%),with an initial 187 Os/188 Os value of 0.68±0.24 and a corresponding Os value of 442±91.The Re/Os ratios of the pyrite vary from 40.8 to 100.5.The data suggest that at least one important ore-forming event was occurred during Indosinian epoch,and the ore-forming materials probably derived from mixed sources of crustal and mantle,while the later dominated.The Ailaoshan composite orogen experienced complicated evolutional processes,including formation of Precambrian-Early Paleozoic basement,subduction and orogenesis of Late Paleozoic era,collisional orogenesis of Late Hercynian-Indosinain epoch,and extensional or striking orogenesis of Yanshainan-Cenozoic epoch.The polycycle tectonic evolution and magmatism in this area caused multi-stage and superposition metallization characteristics of the Zhenyuan gold deposit:the mineralization probably occur mainly during the Indosinian collisional orogeny,while the minor gold ores of altered granite-porphyry and altered lamprophyre may be formed in the late superposition metallization. | SHI GuiYong SUN XiaoMing PAN WeiJian HU BeiMing QU WenJun DU AnDao LI Chao | 2012 | Chinese Science Bulletin2012，57，35： | 9 |
| 8 | Re-Os Dating of Molybdenite from the Yaogangxian Tungsten Deposit,South China,and Its Geological Significance显示文摘Yaogangxian 钨存款位于 Nanling polymetallic metallogenic 省的中央部分。orebodies 作为静脉发生。黑钨矿和辉钼矿是主导的矿石矿物质。二件样品为标明日期预定矿化作用以便阐明的辉钼矿 Re-Os 被选择。从石英黑钨矿静脉的辉钼矿的 Re-Os datings 并且在 153 散猠' ?獡愠 ' 詳?湡 ? 湩敶獲? 楬扭 ? 景愠瑮捩楬敮 ? 愠摮映牯敭 ? 慭獳癩? 湡 ? 敶湩漠敲 ? 的花岗石收益年龄传播了?档愠 ? 桴 ? 楊湡慹潧 ? 湡 ? 敄杮楪獡慨 ? 祴数搠灥獯瑩? | WANG Yonglei PEI Rongfu LI Jinwen QU Wenjun LI Li WANG Haolin DU Andao | 2008 | Acta Geologica Sinica(English Edition)2008，82，4： | 8 |
| 9 | A Study of the Rhenium-Osmium Geochronometry of Molybdenites显示文摘This study deals with the first application of the isotope dilution - inductively coupled plasma mass spectrometry in the rhenium-osmium geochronometry in China. The chemical separation procedure included decomposition of samples by means of alkali fusion, extraction of rhenium by acetone and extraction of osmium by distillation. The recovery of both elements in the entire process was more than 90% . The blanks of analyses were 0.07 ng for rhenium and 0.01 ng for 187Os. The mineralization ages of molybdenites from four molybdenum deposits in China were determined by using this method, with a precision (2σ)of about ±3% . These results agree satisfactorily with their geological backgrounds. The Re-Os method can directly determine ages of metal deposits and reflect the true ages more reliably than other dating methods that only determine the ages of country rocks from which mineralization ages are inferred. As many hydrothermal sulphide deposits usually contain molybdenites, this method has bright | Du Andao, He Hongliao, Yin Ningwan, Zou Xiaoqiu,Sun Yali, Sun Dezhong, Chen Shaozhen and Qu Wenjun Institute of Rock and Mineral Analysis, Chinese Academy of Geological Sciences, Beijing Fei Zhenbi | 1995 | Acta Geologica Sinica(English Edition)1995，69，2： | 7 |
| 10 | Molybdenite Re–Os and albite 40 Ar/ 39 Ar dating of Cu–Au–Mo and magnetite porphyry systems in the Yangtze River valley and metallogenic implications显示文摘 | Jingwen Mao Yitian Wang Bernd Lehmann Jinjie Yu Andao Du Yanxiong Mei Yongfeng Li Wenshuan Zang Holly J. Stein Taofa Zhou | 2005 | Ore Geology Reviews2005，，3： | 2 |
| 11 | Re-Os isotopic composition of the Dongling ⅢCD iron meteorite显示文摘Re, Os concentrations and Os isotopic compositions of the Dongling ⅢCD iron meteorite were determined by N-TIMS technique. The result was compared with that of the other irons and chondrites. The Re and Os concentrations of the Dongling iron meteorite were plotted on the trends of the group ⅢA and ⅣA irons. The Pt-Os relation of the Dongling iron meteorite is similar to that of the group ⅡA irons. That suggests a higher fractionation for the Dongling iron meteorite. | SUN Weidong, DU Andao, YANG Gang, XIE Zhi & CHEN JiangfengDeparlmenl of Earth and Space Sciences, Laboratory tor Chemical Geodynamics. University of Science and Technology of China, Hefei 230026. China:Institute of Rock and Mineral Analysis, Chinese Academy of Geological Sciences. Beijing 100037, China | 2001 | Chinese Science Bulletin2001，46，6： | 2 |
| 12 | Preparation andcertification of Re- Os dating reference materials: MolybdeniteHLP and JDC显示文摘 | Du Andao Wu Shuqi Sun Dezhong | 2004 | Geostandard and Geoanalytical Research2004，28，1： | 1 |
| 13 | Petrogenesis of the Pt–Pd mineralized Jinbaoshan ultramafic intrusion in the Permian Emeishan Large Igneous Province, SW China显示文摘 | Yan Tao Chusi Li Ruizhong Hu Edward M. Ripley Andao Du Hong Zhong | 2007 | Contributions to Mineralogy and Petrology2007，，3： | 1 |
| 14 | Determination of 187 Os in molybdenite by ICP-MS with neutron-induced 186 Os and 188 Os spikes显示文摘 | Qu Wenjun Du Andao Zhao Dunmin | 2001 | Talanta2001，55，： | 1 |
| 15 | Preparation and Certification of Re-Os dating reference materials:Molybdenite HLP and JDC显示文摘 | Du Andao Wu Shuqi Sun Dezhong Wang Shuxian Qu Wenjun Richard Markey Holly Stein John Morgan Dmitry Malinovskiy | 2004 | Geostandard and Geoanalytical Research2004，28，1： | 1 |
| 16 | Re-Os isotopic dating of molybdenites in the Xiaoliugou W (Mo) deposit in the northern Qilian mountains and its geological significance显示文摘 | Mao Jingwen Zhang Zhaochong Zhang Zuoheng Du Andao | 1999 | Geochimica et Cosmochimica Acta1999，，11： | 1 |
| 17 | Petrogenesis of the Pt-Pd mineralized Jin- baoshan ultramafic intrusion in the Permian Emeishan Large Igneous Province, SW China 显示文摘 | Tao Yan Li Chusi Hu Ruizhong Ripley E M Du Andao Zhong Hong | 2007 | Contrib Mineral Petrol2007，153，3： | 1 |
| 18 | PGE geo- chemistry and Re-Os dating of massive sulfide ores from the Baimazhai Cu-Ni deposit, Yunnan Province, China 显示文摘 | Sun Xiaoming Wang Shengwei Sun Weidong Shi Guiyong Sun Yali Xiong Dexin Qu Wenjun Du Andao | 2008 | Lithos2008，105，12： | 1 |
| 19 | Re–Os isotopic dating of molybdenite and pyrite in the Baishan Mo–Re deposit, eastern Tianshan, NW China, and its geological significance显示文摘 | Lianchang Zhang Wenjiao Xiao Kezhang Qin Wenjun Qu Andao Du | 2005 | Mineralium Deposita2005，，8： | 1 |
| 20 | Preparation and certification of Re-Os dating reference materials:Molybdenite HLP and JDC显示文摘 | Du Andao Wu Shuqi Sun Dezhong | | 0，，1： | 1 |
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