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Isotopic Compositions of Sulfur in the Jinshachang Lead–Zinc Deposit, Yunnan, China, and its Implication on the Formation of Sulfur-Bearing Minerals 被引量:9
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作者 BAI Junhao HUANG Zhilong +2 位作者 ZHU Dan YAN Zaifei ZHOU Jiaxi 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2013年第5期1355-1369,共15页
The Jinshachang lead-zinc deposit is mainly hosted in the Upper Neoproterozoic carbonate rocks of the Dengying Group and located in the Sichuan-Yunnan-Guizhou (SYG) Pb-Zn-Ag multi- metal mineralization area in China... The Jinshachang lead-zinc deposit is mainly hosted in the Upper Neoproterozoic carbonate rocks of the Dengying Group and located in the Sichuan-Yunnan-Guizhou (SYG) Pb-Zn-Ag multi- metal mineralization area in China. Sulfides minerals including sphalerite, galena and pyrite postdate or coprecipitate with gangue mainly consisting of fluorite, quartz, and barite, making this deposit distinct from most lead-zinc deposits in the SYG. This deposit is controlled by tectonic structures, and most mineralization is located along or near faults zones. Emeishan basalts near the ore district might have contributed to the formation of orebodies. The j34S values of sphalerite, galena, pyrite and barite were estimated to be 3.6‰-13.4‰, 3.7‰-9.0‰, -6.4‰ to 29.2‰ and 32.1‰34.7‰, respectively. In view of the similar δ34S values of barite and sulfates being from the Cambrian strata, the sulfur of barite was likely derived from the Cambrian strata. The homogenization temperatures (T ≈ 134--383℃) of fluid inclusions were not suitable for reducing bacteria, therefore, the bacterial sulfate reduction could not have been an efficient path to generate reduced sulfur in this district. Although thermochemical sulfate reduction process had contributed to the production of reduced sulfur, it was not the main mechanism. Considering other aspects, it can be suggested that sulfur of sulfides should have been derived from magmatic activities. The δ34S values of sphalerite were found to be higher than those of coexisting galena. The equilibrium temperatures calculated by using the sulfur isotopic composition of mineral pairs matched well with the homogenization temperature of fluid inclusions, suggesting that the sulfur isotopic composition in ore-forming fluids had reached a partial equilibrium. 展开更多
关键词 sulfur isotopic composition thermochemical sulfate reduction homogenization temperature equilibrium temperature Jinshachang lead-zinc deposit
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An experimental study on metal precipitation driven by fluid mixing: implications for genesis of carbonate-hosted lead–zinc ore deposits 被引量:3
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作者 Yan Zhang Runsheng Han +2 位作者 Xing Ding Junjie He Yurong Wang 《Acta Geochimica》 EI CAS CSCD 2019年第2期202-215,共14页
A type of carbonate-hosted lead–zinc(Pb–Zn)ore deposits, known as Mississippi Valley Type(MVT)deposits, constitutes an important category of lead–zinc ore deposits. Previous studies proposed a fluid-mixing model to... A type of carbonate-hosted lead–zinc(Pb–Zn)ore deposits, known as Mississippi Valley Type(MVT)deposits, constitutes an important category of lead–zinc ore deposits. Previous studies proposed a fluid-mixing model to account for metal precipitation mechanism of the MVT ore deposits, in which fluids with metal-chloride complexes happen to mix with fluids with reduced sulfur, producing metal sulfide deposition. In this hypothesis, however, the detailed chemical kinetic process of mixing reactions, and especially the controlling factors on the metal precipitation are not yet clearly stated. In this paper, a series of mixing experiments under ambient temperature and pressure conditions were conducted to simulate the fluid mixing process, by titrating the metal-chloride solutions, doping withor without dolomite, and using NaHS solution. Experimental results, combined with the thermodynamic calculations, suggest that H_2S, rather than HS^-or S^(2-),dominated the reactions of Pb and/or Zn precipitation during the fluid mixing process, in which metal precipitation was influenced by the stability of metal complexes and the pH. Given the constant concentrations of metal and total S in fluids, the pH was a primary factor controlling the Pb and/or Zn metal precipitation. This is because neutralizing or neutralized processes for the ore-forming fluids can cause instabilities of Pb and/or Zn chloride complexes and re-distribution of sulfur species, and thus can facilitate the hydrolysis of Pb and Zn ions and precipitation of sulfides. Therefore, a weakly acidic to neutral fluid environment is most favorable for the precipitation of Pb and Zn sulfides associated with the carbonate-hosted Pb–Zn deposits. 展开更多
关键词 METAL PRECIPITATION Fluid mixing Sulfur species MVT lead-zinc ORE depositS Carbonate-hosted lead-zinc depositS
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A Preliminary Study on Fluid Inclusions and Mineralization of Xitieshan Sedimentary-Exhalative (SEDEX) Lead-Zinc Deposit 被引量:4
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作者 WANG Lijuan ZHU Xinyou +3 位作者 WANG Jingbin DENG Jiniu WANG Yuwang ZHU Heping 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 2008年第4期838-844,共7页
The Xitieshan lead-zinc deposit is located at the northern margin of the Qaidam Basin, Qinghai Province, China, and had developed a complete marine sedimentary-exhalative system. Our preliminary study of ore-forming f... The Xitieshan lead-zinc deposit is located at the northern margin of the Qaidam Basin, Qinghai Province, China, and had developed a complete marine sedimentary-exhalative system. Our preliminary study of ore-forming fluids shows that fluid inclusions in quartz from altered stockwork rocks that represent the pipe facies have a wide range of temperature and salinity. The intense fluid activities are characteristics of the pipe facies of the exhalative system. Fluid inclusions in carbonates near the unstratified ore bodies hosted in the thick-bedded marble which represents vent-proximal facies are large in size and have moderate to high temperatures. They represent unerupted sub-seafloor fluid activity. Fluids in altered stockwork rocks and carbonates have similar H20-NaCI-CO2 system, both belonging to the sedimentary-exhalative system. The fluids migrate from the pipe facies to the unstratified ore bodies. Boiling of the fluids causes the separation of CO2 vapor and liquid H2O. When the fluids migrate into the unconsolidated thick-bedded marble, the escape of CO2, decreasing temperature and pressure as well as some involvement of seawater into the fluids result in the unmixing of fluids with high and low salinity and deposition of ore-forming materials. The two unmixed fluids were trapped in unconsolidated carbonates and the ore-forming materials were deposited in the unconsolidated carbonates to form the sedimentary-exhalative type unstratified ore bodies. The oreforming temperature of unstratified ore bodies is up to high temperature indicating that there is a huge ore-forming potential in its deep. 展开更多
关键词 sedimentary-exhalative system pipe facies unstratified ore bodies fluid inclusions the Xitieshan lead-zinc deposit
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Study on the multi-sources of ore-forming materials and ore-forming fluids in the Huize lead-zinc ore deposit 被引量:4
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作者 张振亮 黄智龙 +2 位作者 管涛 严再飞 高德荣 《Chinese Journal Of Geochemistry》 EI CAS 2005年第3期243-252,共10页
The Huize large-sized Pb-Zn deposit in Yunnan Province, China, is characterized by favorable metallogenic background and particular geological settings. This suggested that the ore-forming mechanism is relatively uniq... The Huize large-sized Pb-Zn deposit in Yunnan Province, China, is characterized by favorable metallogenic background and particular geological settings. This suggested that the ore-forming mechanism is relatively unique. On the basis of geological features such as the contents of mineralization elements, the REE concentrations of gangue calcites, the REE concentrations of calcite veins in the NE-trending tectonic zone and the Pb, Sr, C, H and O isotopic compositions of different minerals, this paper presents that the ore-forming materials and ore-forming fluids of the deposit were derived from various types of strata or rocks. This is a very significant conclusion for us to further discuss the mineralization mechanism of the deposit at depth and establish an available genetic model. 展开更多
关键词 矿石 流动性 沉积作用
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REE Geochemistry of the Lead-Zinc Ores from the Jinding Lead-Zinc Deposit, Lanping, Yunnan 被引量:3
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作者 牟传龙 余谦 张立生 《Chinese Journal Of Geochemistry》 EI CAS 2002年第1期57-64,共8页
Nineteen volcanic and magmatic rock samples were collected from the Jinding lead-zinc deposit and its surrounding areas in Yunnan. The ICP and AES analyses, referred to the previous results, show that the metal minera... Nineteen volcanic and magmatic rock samples were collected from the Jinding lead-zinc deposit and its surrounding areas in Yunnan. The ICP and AES analyses, referred to the previous results, show that the metal minerals and altered rocks in the Jinding lead-zinc deposit display a decreasing trend of ΣREE from the early to late stages of mineralization, and similarities in REE distribution patterns, indicating that the ore fluids are characterized by high LREE enrichment, markedly negative δCe anomaly and slight δEu anomaly. These REE distribution patterns exhibit striking similarities to those of the Pliocene trachyte in the study area, both of which are similar in ΣREE, LREE/HREE ratio, δEu and δCe. The ore fluids besides the basin fluids in the deposit are also closely related to those associated with Pliocene trachyte magmas. 展开更多
关键词 稀土元素地球化学 云南 锌矿石 磁性 锌矿床
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Order of sphalerite and galena precipitation: A case study from lead-zinc deposits in southwest China 被引量:2
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作者 ZHANG Yan HAN Run-sheng WEI Ping-tang 《Journal of Central South University》 SCIE EI CAS CSCD 2020年第1期288-310,共23页
Most of the lead and zinc deposits in Southwest China, are characterized by mineral zoning, which is especially true for the Huize and Zhaotong deposits. The mineral assemblage zoning is consistent for both horizontal... Most of the lead and zinc deposits in Southwest China, are characterized by mineral zoning, which is especially true for the Huize and Zhaotong deposits. The mineral assemblage zoning is consistent for both horizontal and vertical zoning, from the base(center) of the ore body to the top(outermost), the mineral zones are as follows. I-1: coarse-grained pyrite and a little puce sphalerite;I-2: brown sphalerite, galena, and ferro-dolomite;I-3: galena, sandy beige and pale yellow sphalerite, and calcite;and I-4: fine-grained pyrite, dolomite, and calcite. Among them, sphalerite is the landmark mineral of different zoning. From I-1 to I-3, the color of sphalerite changes from dark to light, its crystalline size changes from coarse to fine, and its structure changes from disseminated to veinlet. This mineral zoning is seen not only on a microscopic scale, but is also clear on a mesoscopic and macroscopic scale. It is caused by the order of the sphalerite and galena precipitation. We studied the metallic minerals and fluid inclusions using a thermodynamic phase diagram method, such as lgfO2–lgfS2, pH–lgfO2, pH–lg[Pb^2+] and pH–lg[HS^-], discussed the constraints on the order of the sphalerite and galena precipitation in the migration and precipitation process of lead and zinc under different pH values, oxygen fugacity, sulfur fugacity, and ionic activity. We also explain the formation mechanism and propose that the main controlling factor of the order of the sphalerite and galena precipitation is sulfur fugacity. 展开更多
关键词 precipitation order thermodynamic phase diagram mineral zoning lead and zinc deposit southwest of China
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THE METALLOGENIC STRUCTURE OF VEIN-SHAPED LEAD-ZINCDEPOSIT IN HENGSHANLING-SHEXINGPING,CHENZHOU,HUNAN
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作者 Sun Zhengia Peng Ensheng Zhu Yude(Department of Geology, Central South University ofTechnology, Changsha 410083, China) 《Journal of Central South University》 SCIE EI CAS 1996年第1期43-45,共3页
THEMETALLOGENICSTRUCTUREOFVEIN-SHAPEDLEAD-ZINCDEPOSITINHENGSHANLING-SHEXINGPING,CHENZHOU,HUNANSunZhengiaPeng... THEMETALLOGENICSTRUCTUREOFVEIN-SHAPEDLEAD-ZINCDEPOSITINHENGSHANLING-SHEXINGPING,CHENZHOU,HUNANSunZhengiaPengEnshengZhuYude(De... 展开更多
关键词 METALLOGENIC STRUCTURE leadzinc deposit veinshaped deposit
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Qinling-Type Lead-Zinc Deposits
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作者 Li Jianzhong, Gansu Institute of Geology for Non-Ferrous Metals, CNNC, Lanzhou, Gansu He Dianren North west Institute of Geology for Non-Ferrous Metals, CNNC, Xi’an, Shaanxi and Wu Jianmin Research Institute of Geology for Mineral Resources, CNNC, Guilin, Guangxi 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 1993年第1期79-92,共14页
Qinling-type Pb-Zn deposits are located in the Qinling fold belt, occurring in the fine-clastic and carbonate rocks of the Devonian marine facies. They are reformed sedimentary deposits originating from hydrothermal w... Qinling-type Pb-Zn deposits are located in the Qinling fold belt, occurring in the fine-clastic and carbonate rocks of the Devonian marine facies. They are reformed sedimentary deposits originating from hydrothermal waters, and may be subdivided into 2 subtypes: hydrothermal sedimentary deposits (Changba subtype) and reformed hydrothermal sedimentary deposits (Bijiashan-Qiandongshan subtype). In comparison with some of the famous Palaeozoic Pb-Zn deposits in the world, the Qinling-type Pb-Zn deposits constitute an independent type, which possesses some characteristics of both hydrothermal sedimentary deposits (Meggen type) and reformed hydrothermal deposits (Mississippi Valley type). 展开更多
关键词 Qinling-type lead zinc deposit Changba subtype. Bijiashan-Qiandongshan subtype
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LAWS GOVERNING THE DISTRIBUTION OF LEAD-ZINC DEPOSITS IN CHINA
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作者 YIN Hanhui(Changsha Institute of Geotectonics, Academia Sinica, Changsha, 410013, China ) 《Geotectonica et Metallogenia》 1997年第Z2期78-88,共11页
An attempt is made in this paper to describe the following laws governing the distribution of lead-zinc deposits in China: spatial distribution laws, temporal distribution laws, deep level control laws, and deposits a... An attempt is made in this paper to describe the following laws governing the distribution of lead-zinc deposits in China: spatial distribution laws, temporal distribution laws, deep level control laws, and deposits association and zoning laws. 展开更多
关键词 lead-zinc depositS spatial-temporal DISTRIBUTION DEEP level control LAWS depositS ASSOCIATION and ZONING LAWS
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METALLOGENIC ANALYSIS OF THE DEXING COPPER-GOLD-LEAD-ZINC POLYMETALLIC DEPOSITS, JIANGXI PROVINCE, CHINA
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作者 Tan Keren Bi Hua Wu Qianhong (Changsha Institute of Geotectonics, Academia Sinica, Changsha, 410013, China) 《Geotectonica et Metallogenia》 1995年第Z1期12-27,共16页
The paper discusses the tectonic setting of the fortnation of the Dexing giant copper-gold-lead-zinc deposit and its geological features and demonstrates in detail the polygenetic compound mechanism of its formation.
关键词 GIANT copper-gold-lead-zinc deposit METALLOGENIC ANALYSIS polygenetic compound Dexing China
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Estimation of lead and zinc emissions from mineral exploitation based on characteristics of lead/zinc deposits in China 被引量:15
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作者 张秀武 杨林生 +3 位作者 李永华 李海蓉 王五一 葛全胜 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2011年第11期2513-2519,共7页
Nonferrous mining activities are some of the largest sources of heavy metals emissions into the environment and China is one of the largest producers and consumers of lead and zinc in the world.The cumulative producti... Nonferrous mining activities are some of the largest sources of heavy metals emissions into the environment and China is one of the largest producers and consumers of lead and zinc in the world.The cumulative productions and emissions of lead and zinc from mining-related activities in China were estimated.Up to 2007,the cumulative productions of lead and zinc in China were estimated to be about 6.69 and 12.59 Mt,respectively;and about 1.62 Mt lead and 3.32 Mt zinc emitted into the ambient environment during the mining,processing and smelting activities,representing 24.39% and 26.36% cumulative production,respectively.Among these three types of mining-related activities,mineral processing contributes the most to the total emission of 50.67% lead and 45.51% zinc. 展开更多
关键词 lead/zinc deposit lead zinc cumulative production emission flux
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A review of major non-sulfide zinc deposits in Iran 被引量:3
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作者 Sajjad Maghfouri Mohammad Reza Hosseinzadeh +1 位作者 Abdorrahman Rajabi Flavien Choulet 《Geoscience Frontiers》 SCIE CAS CSCD 2018年第1期249-272,共24页
The numerous non-sulfide zinc ore deposits were the historical basis for the development of zinc mining in Iran.They include the Mehdiabad,Irankouh and Angouran world-class deposits,as well as the Zarigan and Haft-har... The numerous non-sulfide zinc ore deposits were the historical basis for the development of zinc mining in Iran.They include the Mehdiabad,Irankouh and Angouran world-class deposits,as well as the Zarigan and Haft-har deposits.These deposits were formed by supergene oxidation of primary sulfide minerals during the complex interplay of tectonic uplift,karst development,changes in the level of the water table,and weathering.Zn(Pb)carbonates,Zn-hydrosilicates and associated hydrated phases directly replace the primary ore bodies or fill cavities along fractures related to uplift tectonics.Direct replacement of primary sulfides is accompanied by distal precipitation of zinc non-sulfide minerals in cavities or internal sediments filling.The mineralogy of the non-sulfide mineralization in all six deposits is generally complex and consists of smithsonite,hydrozincite,and hemimorphite as the main economic minerals,accompanied by iron and manganese oxy-hydroxides and residual clays.Commonly,non-sulfide minerals in these deposits consist of two types of ore:red zinc ore(RZO),rich in Zn,Fe,Pb-(As)and white zinc ore(WZO),typically with very high zinc grades but low concentrations of iron and lead.Typical minerals of the RZO are Fe-oxyhydroxides,goethite,hematite,hemimorphite,smithsonite and/or hydrozincite and cerussite.Common minerals of the WZO are smithsonite or hydrozincite and only minor amounts of Fe-oxyhydroxides and hemimorphite. 展开更多
关键词 zinc-lead deposits Supergene Non-sulfide Zn minerals HEMIMORPHITE SMITHSONITE HYDROzincITE
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Metallogeny of the Baiyangping Lead-Zinc Polymetallic Ore Concentration Area, Northern Lanping Basin of Yunnan Province, China 被引量:5
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作者 WANG Xiaohu SONG Yucai +3 位作者 ZHANG Hongrui LIU Yingchao PAN Xiaofei GUO Tao 《Acta Geologica Sinica(English Edition)》 CAS CSCD 2018年第4期1486-1507,共22页
The Lanping Basin in the Nujiang-Lancangjiang-Jinshajiang (the Sanjiang) area of northeastern margin of the Tibetan Plateau is an important part of eastern Tethyan metallogenic domain. This basin hosts a number of l... The Lanping Basin in the Nujiang-Lancangjiang-Jinshajiang (the Sanjiang) area of northeastern margin of the Tibetan Plateau is an important part of eastern Tethyan metallogenic domain. This basin hosts a number of large unique sediment-hosted Pb-Zn polymetallic deposits or ore districts, such as the Baiyangping ore concentration area which is one of the representative ore district. The Baiyangping ore concentration area can be divided into the east and west ore belts, which were formed in a folded tectogene of the India-Asia continental coUisional setting and was controlled by a large reverse fault. Field observations reveal that the Mesozoic and Cenozoic sedimentary strata were outcropped in the mining area, and that the orebodies are obviously controlled by faults and hosted in sandstone and carbonate rocks. However, the oreforming elements in the east ore belt are mainly Pb-Zn -Sr-Ag, while Pb-Zn-Ag-Cu-Co elements are dominant in the west ore belt. Comparative analysis of the C-O-Sr-S-Pb isotopic compositions suggest that both ore belts had a homogeneous carbon source, and the carbon in hydrothermal calcite is derived from the dissolution of carbonate rock strata; the ore- forming fluids were originated from formation water and precipitate water, which belonged to basin brine fluid system; sulfur was from organic thermal chemical sulfate reduction and biological sulfate reduction; the metal mineralization material was from sedimentary strata and basement, but the difference of the material source of the basement and the strata and the superimposed mineralization of the west ore belt resulted in the difference of metallogenic elements between the eastern and western metallogenic belts. The Pb-Zn mineralization age of both ore belts was contemporary and formed in the same metaliogenetic event. Both thrust formed at the same time and occurred at the Early Oligocene, which is consistent with the age constrained by field geological relationship. 展开更多
关键词 eastern Tethyan metallogenic domain Lanping Basin Baiyangping ore concentration area lead-zinc polymetallic ore deposit genesis of deposit
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黔西北猪拱塘铅锌矿床品位-吨位模型探讨
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作者 瞿岚 谢小峰 +3 位作者 何良伦 吴成鹏 蔡国荣 吴应值 《化工矿产地质》 CAS 2024年第1期40-46,共7页
矿床品位-吨位模型是表征某一类矿床品位和吨位变化范围及其频率分布的定量化模型,也是矿产资源潜力评价的重要组成部分。本文选取黔西北猪拱塘超大型铅锌矿床为研究对象,依据其综合勘查资料,利用SPSS及Excel软件对黔西北猪拱塘铅锌矿床... 矿床品位-吨位模型是表征某一类矿床品位和吨位变化范围及其频率分布的定量化模型,也是矿产资源潜力评价的重要组成部分。本文选取黔西北猪拱塘超大型铅锌矿床为研究对象,依据其综合勘查资料,利用SPSS及Excel软件对黔西北猪拱塘铅锌矿床153个矿体块段(最小研究单元)的品位、吨位数据进行频率分布处理及分析,然后进行P-P图正态检验,构建矿床的品位模型、吨位模型以及品位-吨位联合模型。研究结果表明黔西北猪拱塘铅锌矿床品位模型服从正态分布,吨位模型服从对数正态分布,并通过模型总结出矿床铅、锌品位-吨位分布特征,为矿床今后的找矿预测工作提供指导。 展开更多
关键词 品位-吨位模型 猪拱塘铅锌矿床 资源评价 黔西北
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对四川马边地区磷-萤石-铅锌-铜多矿种多空间勘查开发工作的思考
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作者 文俊 《地质论评》 CAS CSCD 北大核心 2024年第2期716-719,共4页
马边地区的磷矿资源储量丰富,以往的找矿工作中在沉积型磷矿勘查方面取得了显著的找矿成果。马边地区的磷矿矿业权地块有17处,开采或勘查矿种均为磷矿,只有3处采矿权地块附加开采铅锌矿,1处采矿权地块附加开采萤石矿,马边地区的矿产勘... 马边地区的磷矿资源储量丰富,以往的找矿工作中在沉积型磷矿勘查方面取得了显著的找矿成果。马边地区的磷矿矿业权地块有17处,开采或勘查矿种均为磷矿,只有3处采矿权地块附加开采铅锌矿,1处采矿权地块附加开采萤石矿,马边地区的矿产勘查开发呈现出矿种单一、空间狭窄的局面。基于近年来的找矿成果,建议构建马边地区磷—萤石—铅锌—铜多矿种多空间勘查开发新格局,部署以沉积型磷矿、热液型萤石—铅锌矿、砂岩型铜矿为主攻方向的综合找矿工作,主要包括在已有矿山上部及深部开展增储上产勘查工作、空白区的综合找矿工作及相应的科技创新工作,力争为新一轮找矿突破战略行动产出实效,为保障我国关键矿产资源供给安全发挥重要作用。 展开更多
关键词 磷矿 萤石矿 铅锌矿 铜矿 麦地坪组 灯影组 筇竹寺组 马边地区
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New Constraints on the Environmental Impact of Iron Oxides and Lead-Zinc Mines in Red Sea Hills,Egypt
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作者 El Sayed Ahmed El Gammal Alaa El Din Ahmed 《地学前缘》 EI CAS CSCD 北大核心 2009年第S1期80-80,共1页
Iron oxides and lead-zinc deposits in host rocks located in ten drainage basins in the coastal plain of the Red Sea,Egypt,have been subjected to important mining activities.The drainage basins were analyzed to estimat... Iron oxides and lead-zinc deposits in host rocks located in ten drainage basins in the coastal plain of the Red Sea,Egypt,have been subjected to important mining activities.The drainage basins were analyzed to estimate the transportations of these minerals. Fourteen soil samples and fifteen plant samples were collected from sites located in the basin and also in neighboring area and chemically analyzed.In 展开更多
关键词 IRON OXIDES lead-zinc depositS mining activity environmental impact
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蒙古国查夫铅锌矿锆石U-Pb年代学、岩石地球化学及构造意义
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作者 王宏明 《资源信息与工程》 2024年第1期22-25,29,共5页
通过岩石地球化学研究,蒙古国查夫铅锌矿侵入岩石体为过铝质、高钾钙碱性系列,主体为S型花岗岩,且存在I型花岗岩,反映了岩浆活动的多样性。同时,成矿岩体富集Rb、Ba、Th、U、K和Pb等大离子亲石元素(LILE),亏损Nb、Ta、Ti等高场强元素(HF... 通过岩石地球化学研究,蒙古国查夫铅锌矿侵入岩石体为过铝质、高钾钙碱性系列,主体为S型花岗岩,且存在I型花岗岩,反映了岩浆活动的多样性。同时,成矿岩体富集Rb、Ba、Th、U、K和Pb等大离子亲石元素(LILE),亏损Nb、Ta、Ti等高场强元素(HFSE),显示出岛弧岩浆作用的特征。构造识别认为研究区内花岗岩形成于岛弧、陆缘弧环境,与大陆碰撞造山、后造山构造作用相关,形成年龄为(238±4)Ma(MSWD=3.8),形成时代属中三叠世。 展开更多
关键词 蒙古国查夫铅锌矿 U-PB年代学 地球化学 构造环境
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An aqueous BiI_(3)-Zn battery with dual mechanisms of Zn^(2+)(de)intercalation and I^(-)/I_(2)redox
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作者 Qi Deng Fangzhong Liu +3 位作者 Xiongwei Wu Changzhu Li Weibin Zhou Bei Long 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2024年第2期670-678,I0014,共10页
The development of aqueous battery with dual mechanisms is now arousing more and more interest.The dual mechanisms of Zn^(2+)(de)intercalation and I^(-)/I_(2)redox bring unexpected effects.Herein,differing from previo... The development of aqueous battery with dual mechanisms is now arousing more and more interest.The dual mechanisms of Zn^(2+)(de)intercalation and I^(-)/I_(2)redox bring unexpected effects.Herein,differing from previous studies using Zn I_(2)additive,this work designs an aqueous Bi I_(3)-Zn battery with selfsupplied I^(-).Ex situ tests reveal the conversion of Bi I_(3)into Bi(discharge)and Bi OI(charge)at the 1st cycle and the dissolved I^(-)in electrolyte.The active I^(-)species enhances the specific capacity and discharge medium voltage of electrode as well as improves the generation of Zn dendrite and by-product.Furthermore,the porous hard carbon is introduced to enhance the electronic/ionic conductivity and adsorb iodine species,proven by experimental and theoretical studies.Accordingly,the well-designed Bi I_(3)-Zn battery delivers a high reversible capacity of 182 m A h g^(-1)at 0.2 A g^(-1),an excellent rate capability with 88 m A h g^(-1)at 10 A g^(-1),and an impressive cyclability with 63%capacity retention over 20 K cycles at 10 A g^(-1).An excellent electrochemical performance is obtained even at a high mass loading of 6 mg cm^(-2).Moreover,a flexible quasi-solid-state Bi I_(3)-Zn battery exhibits satisfactory battery performances.This work provides a new idea for designing high-performance aqueous battery with dual mechanisms. 展开更多
关键词 Aqueous BiI_(3)-Zn battery Dual mechanisms I^(-)-induced uniform zinc deposition Ultralong cyclic life Flexible quasi-solid-state battery
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Isotope Geochemistry of the Xinchang -Yongjia Silver (Lead-Zinc)Ore Belt in Eastern Zhejiang Province
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作者 Xu Butai, Li Changjiang Zhejiang Institute of Geology and Mineral Resources, Hangzhou, Zhejiangand Chen Haoshou Department of Earth Sciences, Zhejiang U niversity, Hangzhou, Zheyang Liu Xinzhu 《Acta Geologica Sinica(English Edition)》 SCIE CAS CSCD 1995年第1期69-83,共15页
In the Xinchang-Yongjia silver (lead-zinc) ore belt, there mainly occur the large to medium-sized Haoshi, Bamao, Dalingkou and Wubu silver deposits or silver-bearing lead-zinc deposits. On the basis of researches on t... In the Xinchang-Yongjia silver (lead-zinc) ore belt, there mainly occur the large to medium-sized Haoshi, Bamao, Dalingkou and Wubu silver deposits or silver-bearing lead-zinc deposits. On the basis of researches on these typical deposits, the mechanism of leaching-drawing mineralization of Mesozoic geothermal water and the related model are put forward in this paper in the light of the time interval between rock and formation ages as well as hydrogen, oxygen, sulphur and lead isotope geochemical characteristics. The major metallogenic process occurred in volcanic rock layers. The ore-forming fluids are geothermal water coming from meteoric water and circulating at shallow layers. This geothermal water leached and absorbed ore-forming materials from its country rocks during its flowing (such metallogenic elements as silver, lead-zinc and sulphur mainly came from consolidated volcanic rocks), leading to the formation of meso - epithermal silver deposits. 展开更多
关键词 isotope geochemistry silver (lead-zinc) ore belt genesis of ore deposit Zhejiang Province
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清远市铁山脚-寨仔铜铅锌多金属矿普查区找矿潜力
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作者 胡韶华 于红玉 《云南地质》 2024年第3期351-355,共5页
普查区岩体接触带长5km,物化探异常强度高,范围广,矽卡岩、大理岩化角岩化遍布,已知矿点有观音山铁铜矿床点、寨仔铁矿点、老虎头铅锌矿点,综合条件指示区域具有较好的成矿热源和成矿物质来源,具有较好的热液型多金属矿找矿前景。
关键词 热液型多金属矿 找矿前景 铁山脚-寨仔铜铅锌普查区 广东清远
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