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Geochemical Behavior of Manganese in Weathering Environments and Its Significance in exploration

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Chinese Journal Of Geochemistry 1989年第1期8卷 54-64页

作者：朱兆奇 Team No. 601 of Southwest metallurgico-geological exploration company

Under and climate conditions the chemical weathering of manganese ores is govermed by the fugacities of O2,CO2 and S2 in the atmosphere and *** minerals exhibit solid phase transformations without migration of Fe and *** tropical and subtropical humid climate condi-tions low-valent Mn is instable and apt to be oxidized into high valency ***-valent Mn miner-als are stable and easy to form secondary high-grade Mn *** concentration is possible for Mn ores in carbonate formations,while those in clastic rocks tend to migrate and may be washed *** differences are the main obstacles in prospecting Mn ore deposits.

关键词：地球化学特征锰矿床气候环境找矿标志碳酸盐

Zircon SHRIMP U-Pb Dating and Geochemical Characteristics of Late Variscan Granites of the Daitongshan Copper Deposit and Lamahanshan Polymetallic-Silver Deposit, Southern Daxing'anling, China

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Journal of Earth Science 2013年第5期24卷 772-795页

作者：周振华李泊洋王挨顺武新丽欧阳荷根冯佳睿 MRL Key Laboratory of Metallogeny and Mineral Assessment Institute of Mineral ResourcesChinese Academy of Geological Sciences No. 10 Institute of geological exploration Inner Mongolia Bureau of Geology & Mineral Resources geological Survey Institute of inner mongolia School of Earth Science and Mineral Resources China University of Geosciences Research Institute of Petroleum exploration and Development PetroChina

Daxing＇anling （大兴安岭） area is one of the regions that Phanerozoic granites are extremely developed in NW China. At present, the Hercynian granitoid research lags behind the Mesozoic granitoid research. In this article, we have taken systematic petrochemistry and geochronology researches on the Hercynian granitoids in Daitongshan （代铜山） copper deposit and Lamahanshan （喇嘛罕山） silver poly- metallic deposit, which were located at southern section of Daxing＇anling metallogenic belt. Zircon SHRIMP U-Pb dating results show that, the granite aplites in Daitongshan and the gneissic granites inLamahanshan were formed at （265±5）-（268±9） Ma and （252±2）-（252.6±3.4） Ma, respectively, which were both the products of late Herynian tectonic-magmatic events. Samples from Lama- hanshan are characterized by high SiO2 （69.72 wt.%-74.65 wt.%）, high potassium （3.53 wt.%-4.55 wt.%） and low P205 （0.03 wt.%0.12 wt.%）, aluminum saturation index （A/CNK） range from 0.95 to 0.98, Rb, Nd and K are en- riched, whereas the elements such as Nb, Ta, P and Ti are depleted, which belong to I-type grani- toids. Characteristics of samples from Daitong- shan are similar to H-type granitoids. The magmasource may be mostly originated from the lithospheric mantle component which were transformated or affected by the subduction components, and its formation may be closely related with the subduction and orogenesis of the Paleo-Asian Ocean.

关键词： SHRIMP U-Pb dating geochemistry Variscan Daitongshan copper deposit Lamahan-shan silver polymetallic deposit Daxing'anling.

Water quality assessment for Ulansuhai Lake using fuzzy clustering and pattern recognition

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Chinese Journal of Oceanology and Limnology 2008年第3期26卷 339-344页

作者：任春涛李畅游贾克力张生李卫平曹有玲 inner mongolia Agricultural University Huhhot 010018 China inner mongolia Power exploration & Design Institute Huhhot 010020 China inner mongolia Survey & Design Institute of Water Conservancy & Hydropower Huhhot 010020 China

Water quality assessment of lakes is important to determine functional zones of water *** the fuzziness during the partitioning process for lake water quality in an arid area,a multiplex model of fuzzy clustering with pattern recognition was developed by integrating transitive closure method,ISODATA algorithm in fuzzy clustering and fuzzy pattern *** model was applied to partition the Ulansuhai Lake,a typical shallow lake in arid climate zone in the west part of inner mongolia,China and grade the condition of water quality *** results showed that the partition well matched the real conditions of the lake,and the method has been proved accurate in the application.

关键词： transitive closure method ISODATA clustering algorithm fuzzy pattern recognition method partitioning of water quality

LA-ICP-MS Zircon U-Pb Geochronology of the Fine-grained Granite and Molybdenite Re-Os Dating in the Wurinitu Molybdenum Deposit,inner mongolia,China

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Acta Geologica Sinica(English Edition) 2011年第5期85卷 1057-1066页

作者： Cui LIU Jinfu DENG Weiqiong KONG Liquan XU Guochun ZHAO Zhaohua LUO Ning LI State Key Laboratory of geological Process and Mineral Resources China University of Geosciences (Beijing) Beijing 100083 China Graduate University of Chinese Academy of Sciences Beijing 100049 China The Fourth Institute of geological and Mineral exploration of Gansu Province Jiuquan Gansu 735000 China geological Survey Institute of inner mongolia Hohhot Inner Mongolia 010020 China

The Wurinitu molybdenum deposit,located in Honggor,Sonid Left Banner of inner mongolia,China,is recently discovered and is considered to be associated with a concealed fine-grained granite impregnated with *** wall rocks are composed of Variscan porphyritic-like biotite granite and the Lower Ordovician Wubin'aobao ***-ICP-MS zircon U-Pb dating of the fine-grained granite reveals two stages of zircons,one were formed at 181.7±7.4 Ma and the other at 133.6±3.3 *** latter age is believed to be the formation age of the fine-grained granite,while the former may reflect the age of inherited zircons,based on the morphological study of the zircon and regional geological *** Re-Os model age of molybdenite is 142.2±2.5 Ma,which is older than the diagenetic age of the fine-grained *** the authors believe that the metallogenic age of the Wurinitu molybdenum deposit should be nearly 133.6±3.3 Ma or slightly later,i.e.,Early *** with regional geological background research,it is speculated that the molybdenum deposits were formed at the late Yanshanian orogenic cycle in the Hingganling-mongolian orogenic belt,belonging to the relaxation epoch posterior to the compression and was associated with the closure of the mongolia-Okhotsk Sea.

关键词： fine-grained granite LA-ICP-MS zircon U-Pb geochronology molybdenite Re-Os dating Wurinitu molybdenum deposit inner mongolia

Geochemical and Nd-Hf Isotopic Constraints on the Petrogenesis of an Archean Granitoid in the Erguna Massif, NE China

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Acta Geologica Sinica(English Edition) 2021年第6期95卷 2033-2044页

作者： SHAO Jun LI Yinglei WANG Deli SONG Wanbing WU Xinwei LIU Hongzhang Shenyang Institute of Geology and Mineral Resources Shenyang CenterChina Geological SurveyShenyang 110034China Key Laboratory of Orogen and Crust Evolution Department of GeologyPeking UniversityBeijing 100871China Institute of Mineral Resources Chinese Academy of Geological SciencesBeijing 100037China inner mongolia 115th geological Mineral exploration and Development Co.Ltd. Huhhot 137100China inner mongolia 6th geological Mineral exploration and Development Co.Ltd. HulunbuirInner Mongolia 021008China Hebei Regional geological Survey Institute Hebei 065000China

Crystalline basement and Precambrian crustal growth of the continental massifs within the Central Asian Orogenic Belt(CAOB) are still pending problems. Our geological and geochemical investigations identified an Archean(2606 Ma) granitic pluton in the Biliya area of the Erguna Massif. The Neoarchean granitoids show high and positive in-situ zircon ε_(Ht)(t)(+0.3 to +10.0), whole-rock ε_(Nd)(t)(+4.8) and whole-rock ε_(Ht)(t) values(+2.1). They are characterized by high Y + Ce + Zr + Nb(> 220 ppm) and Zr contents and could be classified as A-type granites. These granitoids are characterized by high Zr saturation temperatures(T;)(796–836°C). They were derived from partial re-melting of juvenile mafic lower crust in an intracontinental back-arc extensional environment. This newly identified Neoarchean granitic pluton may represent the crystalline basement of the several continent massifs within the CAOB, and their high ε_(Ht)(t)–ε_(Nd)(t) values may also indicate the occurrence of lateral crustal growth events in these massifs during the Neoarchean.

关键词： crystalline basement A-type granite Neoarchean crustal growth Neoarchean Central Asian Orogenic Belt

Late Mesozoic Tectonic Evolution of Southwestern Fujian Province,South China:Constraints from Magnetic Fabric,Zircon U-Pb Geochronology and Structural Deformation

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Journal of Earth Science 2018年第2期29卷 391-407页

作者： Sen Wang Da Zhang Ganguo Wu Xingjian Li Xiaoqiao Gao Absai Vatuva Yuan Yuan Tengda Yu Yu Bai Ye Fang State Key Laboratory of geological Processes and Mineral Resources China University of GeosciencesBeijing 100083China Beijing Institute of exploration Engineering China Geological SurveyBeijing 100083China inner mongolia Mining Development Limited Liability company Hohhot 010010China

A combined study of magnetic fabrics, zircon U-Pb geochronology and structural deformation was carried out for Late Paleozoic sedimentary and Mesozoic magmatic rocks in the southwestern Fujian rift basin, South China, aiming at deciphering the tectonic evolution during Late Mesozoic. Field observations showed that the Late Mesozoic structure deformations in southwestern Fujian were categorized into four phases： NW-SE compression, ENE-WSW extension, NNE-SSW compression and NNW-SSE extension, se- quentially. Zircons picked out from Juzhou granite and WNW-trending diabase dykes showed complete crys- tal shapes and clear oscillatory zonings on their edges, and the U-Pb dating yielded ages of 132 and 141 Ma, respectively. The susceptibility ellipsoid magnitude parameters of the Juzhou granite are characterized by flaser type strain ellipsoid, with pole density center of K3 falling into the first and the third quadrants, these fea- tures revealed that the Juzhou granite formed in ENE-WSW compressional stress field, indicating the early stage of Early Cretaceous extrusion in southwestern Fujian. The late stage of Early Cretaceous NNE-SSW ex- tension was limited by the widespread WNW-trending diabase dykes, which were usually regarded as impor- tant indications for a regional extensional setting. On the basic of the previous researches, structural deforma- tion studies, and the deductions above, it can be concluded that southwestern Fujian experienced five main tectonic stages during Late Mesozoic： Early Jurassic extension, Middie-Late Jurassic thrusting, early stage of Early Cretaceous extension, late stage of Early Cretaceous compression and Late Cretaceous extension.

关键词： tectonic evolution magnetic fabric U-Pb dating structural deformation southwestern Fujian.

SHRIMP Zircon U-Pb Ages of the Manketouebo Formation in the Southern Manzhouli Area,Northeast China

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Acta Geologica Sinica(English Edition) 2019年第2期93卷 487-488页

作者： MI Kuifeng CHENG Shaobo ZHAO Shengjin Development and Research Centre China Geological Survey School of Earth Sciences and Resources China University of Geosciences China Deep exploration Center-SinoProbe Center Chinese Academy of Geological Science No.10 Institute of geological exploration Inner Mongolia Bureau of Geology and Mineral Resources

Objective The Great Xing’an Range is located in the eastern Central Asian Orogenic Belt and contains a Mesozoic volcanic belt that crops out over an area of 100, 000 km^2,dominating the Mesozoic stratigraphy of the G... 详细信息

关键词： Pb Th Ages Manketouebo Formation

晶格畸变增强卤化锑晶体团簇的自陷激子发射（英文）

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Science China Materials 2025年第1期 132-140页

作者：刘达何敬敬孙玉婷刘心翊彭玉李庆杨化桂牛强杨双侯宇 Key Laboratory for Ultrafine Materials of Ministry of Education Shanghai Engineering Research Center of Hierarchical Nanomaterials School of Materials Science and Engineering East China University of Science and Technology China National Enterprise Technology Center Inner Mongolia Erdos Electric Power and Metallurgy Group Company Limited

零维钙钛矿材料以自陷激子引起的宽带发射为特征,是一种很有前途的刺激响应和光加密材料.然而,现有的研究主要集中在结构相变对光物理性质的影响上,对自陷激子的发射机制缺乏深入了解.本文证明了零维卤化锑单晶中的脱水反应,在不诱导结...

零维钙钛矿材料以自陷激子引起的宽带发射为特征,是一种很有前途的刺激响应和光加密材料.然而,现有的研究主要集中在结构相变对光物理性质的影响上,对自陷激子的发射机制缺乏深入了解.本文证明了零维卤化锑单晶中的脱水反应,在不诱导结构相变的基础上显著增强了自陷激子的发射,导致光致发光量子产率从3.5%大幅提高到91.4%.利用原位X射线衍射和光致发光技术揭示了晶体结构和光致发光强度之间的定性关系,证明了在脱水过程中引入了丰富的晶格畸变.温度依赖的荧光光谱和瞬态吸收光谱表明,晶格畸变导致中等的电子-声子耦合强度和更高的激子结合能,加速了自陷激子从非辐射复合单重态弛豫到辐射复合三重态,进而表现出增强的光致发光.作为概念验证,在防伪、可重写发光纸和湿度传感等多重场景中实现了应用.这一发现阐明了自陷激子的发射机制,并为设计可切换发光材料提供了一条新途径.

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Helium-argon isotopic tracing for the Pb-Zn-Ag polymetallic ore deposits in the central-south segment of the Da Hinggan Ling Range

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Chinese Journal Of Geochemistry 2008年第3期27卷 235-241页

作者： WANG Baode NIU Shuyin SUN Aiqun HU Huabin LIU Yaming GUO Lijun WANG Shuo geological Survey Institute Shijiazhuang University of Economics Shijiazhuang 050031 China inner mongolia Bureau of Geology and Mineral Resources exploration Development Hohhot 010020 China

In recent years big strides have been made in the exploration of ores in the central-south segment of the Da Hinggan Ling Range,though some debates still exist on the metallogenesis and sources of ore-forming *** and other sulfides in direct relation to the Pb-Zn-Ag ore deposits were chosen for the He and Ar isotopic analysis of ore-forming fluids,and the first He and Ar isotope data have been obtained from the study region.3He/4He ratios in 14 samples collected from 7 mining districts are 2.17×10-6-12.52×10-6,averaging 6.86×10-6 and their R/Ra ratios are 1.56-9.01 Ra,averaging 4.37 *** projecting the data points onto the 3He-4He concentrations diagram,all the points fall near the mantle helium *** calculated mantle-source helium ratios are within the range of 19.58%-76.96%,with an average of 49.52%.Argon isotopic characteristics are close to those of mantle source,indicating that the ore-forming material was transport upwards via the multi-stage evolution of mantle plume and concentrated as ores in the favorable loci of mantle branch structures.

关键词：氦氩同位素合成矿石材料沉积物地幔分支结构