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Electrochemical Li-storage Properties of Nanosized FeSb_2 Prepared by Solvothermal Method

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Journal of Materials Science & Technology 2006年第1期22卷 31-34页

作者： Jian XIE Xinbing ZHAO Gaoshao cao mingjian ZHAO Department of Materials Science and Engineering Zhejiang University Hangzhou 310027 China

Li-storage intermetallic compound FeSb2 was prepared by solvothermal method and was studied as a promising anode material for secondary lithium-ion batteries. The as-prepared powder was characterized by X-ray diffraction （XRD） and field emission scanning electron microscopy （FESEM）. The electrochemical Li-storage performances of this intermetallic anode were evaluated in a two-electrode cell Li/LiPF6 （EC＋DMC）/FeSb2. It was found that the particle size of FeSb2 powder is in nanoscale and this intermetallic anode exhibited enhanced cycling behavior comparing to its microscaled counterpart prepared by levitation-melting/ball-milling route.

关键词： FeSb2 Electrochemical performances Anode materials Lithium-ion batteries Nanomaterlals

基于构造变形岩相带的覆盖区化探资料解释与找矿应用:以广西金秀镍钴多金属矿田为例

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现代地质 2024年第4期38卷 934-946页

作者：张宝林吕古贤沈晓丽张壮曹明坚黄新硕苏艳平贾文臣中国科学院矿产资源研究重点实验室中国科学院地质与地球物理研究所北京100029 中国科学院地球科学研究院北京100029 中国科学院大学北京100049 中国地质科学院地质力学研究所北京100081 山东科技大学地球科学与工程学院山东青岛266590 赤峰柴胡栏子黄金矿业有限公司内蒙古赤峰024005 德州学院生态与资源环境学院山东德州253023 中铁资源集团有限公司北京技术咨询分公司北京100070

覆盖区化探资料复杂,解释难度大,亟须加强构造控矿要素方面的约束。不同类型覆盖区的构造形迹出露程度差别很大,因此需要从多个级别的构造体系中提取含矿构造变形岩相带的分布信息。本文提出基于地质力学构造体系阶段性演化特征判别覆... 详细信息

覆盖区化探资料复杂,解释难度大,亟须加强构造控矿要素方面的约束。不同类型覆盖区的构造形迹出露程度差别很大,因此需要从多个级别的构造体系中提取含矿构造变形岩相带的分布信息。本文提出基于地质力学构造体系阶段性演化特征判别覆盖区有利含矿构造走向,解译化探资料的成矿信息,以快速圈定找矿靶区的新思路。首先,从已知的地质、遥感和物探资料中解译出矿田的构造形迹和热液矿床的成矿信息;其次,依据成矿期的构造应力场特征确定主应力方向;第三,将张扭性和张性构造变形岩相带作为有利的含矿构造;最后,根据数据处理结果确定找矿异常区。将上述方法应用在广西金秀镍钴多金属矿田,确定了两个主要的含矿构造方向,即NWW—EW—NEE向断裂和NW—NNW向断裂,它们的形成时期不同,分别控制富砷化物型和富硫化物型的镍钴多金属矿脉。该方法和找矿思路可在覆盖区矿产资源勘查工作中进一步推广。

关键词：覆盖区地球化学勘查构造变形岩相构造体系找矿预测广西金秀

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花岗伟晶岩分异演化与含矿性评价——从造岩矿物组构视角

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地质学报 2024年第5期98卷 1527-1549页

作者：秦克章刘宇超赵俊兴赵永能周起凤施睿哲朱丽群何畅通李俊瑜曹明坚中国科学院矿产资源研究重点实验室中国科学院地质与地球物理研究所北京100029 中国科学院大学地球与行星科学学院北京100049 中国冶金地质总局矿产资源研究院北京101300

高演化稀有金属伟晶岩的成矿过程是复杂和苛刻的,涉及到岩浆-热液过程热历史、岩浆迁移路径与成矿空间、侵位环境的过冷程度以及岩浆组分中稀有金属元素的初始富集等条件。而伟晶岩的分带特征是其形成过程的一种综合体现,不论是伟晶岩... 详细信息

高演化稀有金属伟晶岩的成矿过程是复杂和苛刻的,涉及到岩浆-热液过程热历史、岩浆迁移路径与成矿空间、侵位环境的过冷程度以及岩浆组分中稀有金属元素的初始富集等条件。而伟晶岩的分带特征是其形成过程的一种综合体现,不论是伟晶岩区域分带还是伟晶岩内部结构分带,都反映了伟晶岩岩浆结晶分异过程中岩浆的性质与形成环境,而这同时也赋予了造岩矿物在组构上的特殊性,形成遗传代码,对其进行解密,从而能够用于示踪与评估花岗伟晶岩的演化程度与成矿潜力。对于区域伟晶岩群的成矿潜力评估,由于含矿熔体在组分上的跨度较大,随着远离母体花岗岩体距离的增大,伟晶岩群演化程度增加,熔体中铁镁质组分以及Ca、Ba、Sr等碱土金属含量迅速降低,而挥发分、助熔剂组分、碱金属含量在残余熔体中逐渐增加,长石、云母与石英在类别和组构上产生显著变化;其中长石向钾-钠端元演化,且钠长石相对钾长石占据主导地位,云母由黑云母向白云母以及锂白云母转变,石英阴极发光特征与晶体结构及微量元素成分也表现出规律性的变化。受矿物晶格的限制,长石的K/Rb、K/Cs以及云母的K/Rb、K/Cs、Nb/Ta等比值特征能有效区分不同矿化潜力的伟晶岩群。石英的阴极发光特征能够揭示其生长环境与历史,石英的Li、Al、Ti、Ge等微量元素组成可以用来区分不同类型的伟晶岩矿床,并提供关于岩浆演化和成矿过程的重要线索。伟晶岩内部分带的形成主要受成矿熔体规模、过冷度以及成矿空间的封闭性等因素的控制,但在初始熔体成分上可以具有较大的变化。其中强分带型稀有金属伟晶岩记录了完整的岩浆-热液演化过程,不同阶段石英、长石和云母在晶体形态、微观结构以及微量元素组成上都具有显著变化。弱分带型稀有金属伟晶岩(钠长石-锂辉石伟晶岩)的造岩矿物组分在伟晶岩内部变化不大,其受构造控制明显,在空间上与贫矿伟晶岩之间可具有较大的矿物组成差异,表明二者之间存在流动分异过程。而长距离(以更厚的地壳或大型拆离断层为标志)的熔体迁移正是形成超大型伟晶岩稀有金属矿床的有利要素。

关键词：花岗伟晶岩造岩矿物长石-石英-云母组构特征岩浆分异演化含矿性评价

西藏琼嘉岗伟晶岩型锂矿矿物包裹体形成过程及其对熔-流体特征的指示

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岩石学报 2024年第2期40卷 450-464页

作者：施睿哲赵俊兴何畅通秦克章赵永能曹明坚贾丽辉中国科学院矿产资源研究重点实验室中国科学院地质与地球物理研究所北京100029 中国科学院大学地球与行星科学学院北京100049 德国地学研究中心波茨坦144734 岩石圈演化国家重点实验室中国科学院地质与地球物理研究所北京100029

西藏琼嘉岗伟晶岩型锂矿是喜马拉雅地区发现的首例具有工业价值的伟晶岩型锂矿床,该矿床的发现证实了喜马拉雅地区具有成为我国稀有金属战略基地的潜力,也为喜马拉雅地区寻找伟晶岩型锂矿床提供了指示意义。本研究主要针对琼嘉岗锂矿花... 详细信息

西藏琼嘉岗伟晶岩型锂矿是喜马拉雅地区发现的首例具有工业价值的伟晶岩型锂矿床,该矿床的发现证实了喜马拉雅地区具有成为我国稀有金属战略基地的潜力,也为喜马拉雅地区寻找伟晶岩型锂矿床提供了指示意义。本研究主要针对琼嘉岗锂矿花岗岩和伟晶岩中三种主要副矿物独居石、磷灰石和锆石中的矿物包裹体进行扫描电镜分析,确定矿物包裹体种类、频率以及产状(与裂隙关系),结合磷灰石中长石包裹体电子探针分析,综合指示琼嘉岗锂矿熔-流体性质及演化过程。研究表明:(1)琼嘉岗锂矿独居石、磷灰石和锆石中主要发育硅酸盐、氧化物、磷酸盐以及少量硫化物包裹体,其中填充裂隙和穿切裂隙的富稀土矿物独居石和磷灰石包裹体均由热液蚀变形成,而锆石放射性损伤强烈的区域中发育的远离裂隙的晶质铀矿和方钍石包裹体的形成也和流体作用相关;(2)电气石白云母花岗岩的磷灰石中发育钶钽铁矿以及烧绿石包裹体表明早期花岗岩岩浆富集铌和钽,稀有金属包裹体的数量以及类型也对高演化的花岗岩和伟晶岩是否具有稀有金属成矿潜力以及矿化类型具有一定指示意义;(3)锂辉石伟晶岩磷灰石中发育异常高且变化大的An值的斜长石包裹体,它们分别记录了磷灰石在结晶时对早期富钙熔体的捕获以及熔体的分异过程。本文的研究结果还表明副矿物中矿物包裹体的种类以及元素组成可以为高演化花岗岩-伟晶岩体系的熔-流体特征及演化提供指示意义。

关键词：琼嘉岗伟晶岩型锂矿矿物包裹体副矿物斜长石熔-流体特征

Major and Trace Element Characteristics of Apatites in Granitoids from Central Kazakhstan:Implications for Petrogenesis and Mineralization

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Major and Trace Element Characteristics of Apatites in Grani...

中国科学院地质与地球物理研究所2012年度（第12届）学术年会

作者： mingjian cao Guangming LI Kezhang QIN Eleonora Yusupovha SEITMURATOVA Yongsheng LIU Key Laboratory of Mineral Resources Institute of Geology and GeophysicsChinese Academy of Sciences Graduate University of Chinese Academy of Sciences

This paper presents abundances of major and trace elements of apatites in granitic rocks associated with different types of ore deposits in Central Kazakhstan on the basis of electron probe microanalysis and laser ablation inductively coupled plasma mass *** results demonstrate that the concentrations and ratios of elements in apatites from different granitoid rocks show distinct features,and are sensitive to magma evolution,petrogenetic and metallogenetic *** in the rocks associated with Mo-W deposits have high content of F and MnO,low content of Cl,which may be indicative of sedimentary sources,while apatites from a Pb-Zn deposit show relatively high content of Cl and low F content,which possibly suggest a high water content In these apatites,Sr contents decrease,while Mn and Y contents increase with magma *** relationship reflects that these elements in apatites are related with the degree of magmatic *** types of REE patterns in apatites are *** 1 character of highest(La/Yb) in apatites of Aktogai porphyry Cu-Mo deposit,Sayak-I skarn Cu deposit and Akzhal skarn Pb-Zn depposit is likely produced by the crystallization of heavy REE-enriched *** 2 character of upward-convex light REE in apatite of Aktogai porphyries likely results from La-enriched mineral *** 3 feature of Nd depletion in apatites of East Kounrad and Zhanet deposits both from Mo-W deposits primarily inherits the character of *** 4 apatites of Aktogai deposit and Akshatau W-Mo deposit with wide range of REE contents may suggest that apatites crystallize under a wide temperature *** types of apatite with distinct redox states are identified based on Eu *** Aktogai apatite with slight negative Eu anomaly displays the most oxidized state of the magma,and the apatites of other samples at Aktogai,East Kounrad and Akzhal with moderate negative Eu anomaly show moderate oxidizing conditio

关键词： apatite Central Kazakhstan granitoid magmatic differentiation metallogenetic processes redox states

In situ LA-(MC)-ICP-MS trace element and Nd isotopic compositions and genesis of polygenetic titanite from the Baogutu reduced porphyry Cu deposit,Western Junggar,NW China

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In situ LA-(MC)-ICP-MS trace element and Nd isotopic composi...

中国科学院地质与地球物理研究所2015年度（第15届）学术年会

作者： mingjian cao KeZhang Qin GuangMing Li Noreen J.Evans LuYing Jin Key Laboratory of Mineral Resources Institute of Geology and GeophysicsChinese Academy of Sciences John de Laeter Center for Isotope Research Department of Applied GeologyCurtin University University of Chinese Academy of Sciences

Titanite(sphene,Ca Ti Si O5)is sensitive to changes in temperature,oxygen and water fugacity,and fluid *** order to understand formation processes and the nature of hydrothermal fluids,various types of titanite from Cu ores at the Baogutu reduced porphyry Cu deposit were chosen for detailed *** titanite is associated with biotite,plagioclase and K-feldspar,whereas hydrothermal titanite occurs with K-feldspar,chlorite,actinolite and *** formation of hydrothermal titanite was related to hydration of igneous minerals under high f H2O,whereas the widespread replacement of ilmenite by titanite(without magnetite)indicates a relatively low oxygen *** titanite has low Al,high Fe,Y,Sn,Zr,Nb and REE contents,relative to hydrothermal *** the basis of the Zr-in-titanite and Al-in-chlorite geothermometers,formation temperatures for magmatic and hydrothermal titanite are estimated to be 687–739°C and 250–670°C,*** gradual decrease in REE,Y and Sn contents from magmatic to late hydrothermal titanite was probably caused by precipitation of REE-bearing *** and hydrothermal titanites have similar chondrite-normalized REE patterns with negative Eu anomalies and relatively flat *** selected titanites have Nd isotopic compositions similar to the host ***,both magmatic and hydrothermal titanite are believed to have been predominantly derived from a mantle source.

关键词： Baogutu reduced porphyry Cu deposit Titanite Trace elements In situ Nd isotopes Zr-in-titanite geothermometer

平坦俯冲及其成矿效应的研究进展、实例分析与展望

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岩石学报 2011年第12期27卷 3727-3748页

作者：曹明坚秦克章李继亮中国科学院矿产资源研究重点实验室中国科学院地质与地球物理研究所北京100029 中国科学院研究生院北京100039

平坦俯冲是指上覆大陆板块之下大洋板片低角度近水平俯冲(俯冲角度<10°),全球10%的俯冲带为平坦俯冲。前人研究表明,安第斯许多大型-超大型斑岩铜矿和浅成低温热液型金矿与平坦俯冲具有直接的成因联系。同时平坦俯冲对造山作用、地震... 详细信息

平坦俯冲是指上覆大陆板块之下大洋板片低角度近水平俯冲(俯冲角度<10°),全球10%的俯冲带为平坦俯冲。前人研究表明,安第斯许多大型-超大型斑岩铜矿和浅成低温热液型金矿与平坦俯冲具有直接的成因联系。同时平坦俯冲对造山作用、地震灾害、构造变形、壳幔相互作用等均具有重要的影响,因此开展平坦俯冲研究具有重要意义。本文主要从以下方面系统总结了平坦俯冲研究成果,包括平坦俯冲的主要表现、地质时期俯冲类型的转变、平坦俯冲的演化过程、平坦俯冲形成的可能机制,分析探讨平坦俯冲与增生型造山带之间可能联系、平坦俯冲与斑岩铜矿床的关系、以及平坦俯冲与洋中脊俯冲(板片窗)的区别,并介绍分析了北美Laramide造山带和华南中生代花岗岩带两个可能的平坦俯冲实例,最后给出平坦俯冲及其成矿效应的几点结论,并对我国今后开展相关研究提出了一些思考与展望,指出中亚造山带尤其是哈萨克斯坦巴尔喀什斑岩铜矿带及邻区和班公湖-怒江斑岩铜矿带构成两个潜在的古平坦俯冲发育区,斑岩铜矿极具潜力。

关键词：平坦俯冲俯冲类型斑岩铜矿增生型造山带

Formation Age and Evolution Time Span of the Koktokay No.3 Pegmatite,Altai,NW China:Evidence from U–Pb Zircon and 40Ar–39Ar Muscovite Ages

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Formation Age and Evolution Time Span of the Koktokay No.3 P...

中国科学院地质与地球物理研究所2015年度（第15届）学术年会

作者： Qifeng Zhou Kezhang Qin Dongmei Tang Ye Tian mingjian cao Chunlong Wang Key Laboratory of Mineral Resources Institute of Geology and GeophysicsChinese Academy of Sciences Xinjiang Research Center for Mineral Resource Xinjiang Institute of Ecology and GeographyChinese Academy of Sciences University of Chinese Academy of Sciences

The Koktokay No.3 pegmatite is the largest Li–Be–Nb–Ta–Cs pegmatitic rare-metal deposit of the Chinese Altai orogenic belt,and is famous for its concentric ring zonation pattern(nine internal zones).However,the formation age and evolution time span have been ***,we present the results of LA-ICP–MS zircon U–Pb dating and muscoviteAr–Ar *** groups of zircon U–Pb ages(10 Ma,93–198 Ma,86–187 Ma and 72 Ma) for Zones II,V,VI,VII,and VIII,and a weighed mean Pb/ U age of 965 ± 11 Ma for Zone IV are ***,Zones II,IV,and VI have muscoviteAr–Ar plateau ages of 179.7 ± 1.1 Ma,182.1 ± 1.0 Ma,and 181.8 ± 1.1 Ma,*** previous U–Pb age studies(Zones I,V,and VII),the ages of emplacement,Li mineralization peak,hydrothermal stage of the No.3 pegmatite are in ranges of 193–198 Ma,184–187 Ma and 172–175 Ma,with weighted meanPb–U ages of 194.8 ± 2.3 Ma,186.6 ± 1.3 Ma and 173.1 ± 3.9 Ma,*** No.3 pegmatite formed in the early *** results of xenocrysts suggest that there is another pegmatite forming event of around 210 Ma in the mining district and the old zircon U–Pb ages imply that Neoproterozoic crustal rocks pertain to sources of the No.3 *** the previous muscoviteAr–Ar age studies(Zones I and V),a cooling age range of 177–182 Ma is considered as the time of hydrothermal stage and end of *** evolution process of the No.3pegmatite lasted 16 ***,the magmatic stage continued for 9–11 Myr and the magmatic–hydrothermal transition and hydrothermal stages were sustained at 5–7 *** time spans are long because of huge scale,cupola shape,large formation depth,and complex internal zoning patterns and formation *** some pegmatite dikes in the Chinese Altai,there is an early Jurassic pegmatite forming event.

关键词： Altai evolution time span Muscovite40Ar–39Ar age the Koktokay No 3 pegmatite zircon U–Pb age

Abiogenic Fischer-Tropsch synthesis of methane at the Baogutu reduced porphyry copper deposit,western Junggar,NW-China

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Abiogenic Fischer-Tropsch synthesis of methane at the Baogut...

中国科学院地质与地球物理研究所2014年度（第14届）学术年会

作者： mingjian cao KeZhang Qin GuangMing Li Noreen J.Evans LuYing Jin Key Laboratory of Mineral Resources Institute of Geology and GeophysicsChinese Academy of Sciences John de Laeter Center for Isotope Research Dept. Applied GeologyCurtin University University of Chinese Academy of Sciences

Methane is widely developed in hydrothermal fluids from reduced porphyry copper deposits,but its origin remains *** occurrence of methane in fluid inclusions at the Late Carboniferous Baogutu reduced porphyry copper deposit in western Junggar,Xinjiang,NW-China,presents an excellent opportunity to address this problem.A systematic study including fluid inclusion Laser-Raman and CO-CH carbon isotope analyses,igneous and hydrothermal mineral H-O isotope analyses,and in situ major,trace element and Sr isotopic analyses of hydrothermal epidote was conducted to constrain the origin of CH and CH-rich *** δH and δO of water in equilibrium with igneous biotite ranges from-65.0‰to-66.0‰ and +7.2‰ to +7.4‰,respectively,indicating notable degassing of probably supercritical fluids in the magma *** wide range of δH(-58.0‰ to-107.0‰,n=23) for water within quartz suggests the existence of significant hydrothermal fluid ***-rock interaction is the most likely mechanism leading to the wide range of δO values for water in vein quartz with water/rock ratios(wt.%in O) of 0.15 to 0.75 and 0.13 to 0.46 for a closed and open system,*** Laser-Raman analyses indicate CO in apatite included in granodiorite porphyry phenocrystic biotite that records the carbon species of the early stage magmatic stage,whereas later hydrothermal fluids containing CH with trace or without CO are found in inclusions of vein *** propose that CH is probably transformed from CO by Fischer-Tropsch type reactions at 500℃,assumed from CO-CH C isotope ***(Sr/Sr)i of hydrothermal epidote yields values of0.70369-0.70404,consistent with that reported for the whole *** δC(-28.6‰ to-22.6‰) and δH(-108.0‰to-59.5‰) are characteristic of abiogenic *** measured δC shows a slightly depleted C(-13.5‰ to-7.2‰)relative to upper mantle(-6‰),probably due to the combined effects of minor(less than 0.5%) sedimentary organic matter contamination in the

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