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chinese Chemical Letters 2013年第6期24卷 506-508页

作者： Fan-Yun Meng Ying-qin Wei Heng Lu Xiao-Teng zhou Jin-xin liu Geng li Jing-Yi Hou beijing Key Laboratory of Protection and Utilization of chinese Medicine.beijing Normal University institute of Natural Medicine and chinese Medicine Resources Beijing Normal University beijing Key Laboratory of Protection and Utilization of chinese Medicine Beijing Normal University School of Chemical Engineering Shandong Institute of Light Industry

A new method for the analysis of copper and its speciation in Rhizoma coptidis was proposed using chelatometric dispersive liquid-liquid microextraction（cDLLME） followed by capillary electrophoresis. Dithizone was used as a chelating agent for extraction and carbon tetrachloride and ethanol were used as extraction and dispersive solvent,*** calibration curve was linear in the range of 0.5- 20.0μg/mL with a correlation coefficient of 0.9990（n = 6） and the average recovery was in the range of 88.26%-94.44%.The method was successfully used to determine the total and water soluble copper in Rhizoma coptidis herbal *** results suggested that it would be reasonable to setting the criterion of heavy metals in an herbal medicine according to the dosage forms.

关键词： Capillary electrophoresis cDLLME Speciation Rhizoma coptidis

基于多种解析法和数值法求解巨厚砂岩水文地质参数

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煤炭科学技术 2024年第S01期52卷 174-182页

作者：周全超刘玲李继升殷裁云华能煤炭技术研究有限公司北京100070 中国煤炭地质总局勘查研究总院北京100039

在煤矿开采过程中,矿井涌(突)水等事故不仅会造成巨大的经济损失,还严重威胁工作人员的生命安全。水文地质参数在计算矿井涌水量过程中扮演着重要角色,因此,准确测定含水层的水文地质参数对于煤矿防治水等工作具有重要意义。为了获取更... 详细信息

在煤矿开采过程中,矿井涌(突)水等事故不仅会造成巨大的经济损失,还严重威胁工作人员的生命安全。水文地质参数在计算矿井涌水量过程中扮演着重要角色,因此,准确测定含水层的水文地质参数对于煤矿防治水等工作具有重要意义。为了获取更加贴近实际的矿区顶板巨厚洛河组砂岩含水层的水文地质参数,以新庄煤矿洛河组巨厚砂岩含水层上、下段的抽水试验资料为依托,采用传统的非稳定流的Theis公式法、Jacob直线图解法和水位恢复法等解析法,结合实际场地特征,计算出洛河组砂岩含水层上、下段的渗透系数分别为0.22~0.59和0.03~0.35 m/d;上段导水系数为128.74~373.67 m^(2)/d,下段为5.52~47.07 m^(2)/d;上段的贮水系数为2.22.10^(-4)~6.69×10^(-3),下段为6.53×10^(-5)~3.29×10^(-3)。并通过FEFLOW软件建立新庄矿区的地下水流数值模型,求解洛河组含水层的水文地质参数,得到洛河组上、下段渗透系数分别为0.55和0.45 m/d。通过多种方法对比分析表明,通过数值模拟法得到的水文地质参数结果与多种解析法计算的结果相近。在此基础上,根据各方法得出的水文地质参数计算矿井涌水量,并与实际涌水量进行对比,结果表明:在含水层上段,采用数值模拟法得到的水文地质参数计算的涌水量更加接近实际涌水量;而在洛河组下段,采用Jac-ob直线图解法得到的水文地质参数计算的涌水量更加接近实际涌水量。进一步提高了水文地质参数计算的准确度,为后期的含水层富水性研究、矿井涌水量预测以及类似矿区顶板巨厚洛河组砂岩含水层的矿井水防治工作提供依据。

关键词：矿井涌(突)水水文地质参数抽水试验洛河组砂岩

Triboelectric nanogenerator enhanced multilayered antibacterial nanofiber air filters for efficient removal of ultrafine particulate matter

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Nano Research 2018年第8期11卷 4090-4101页

作者： Guang qin Gu Chang Bao Han Jing Jing Tian Tao Jiang Chuan He Cun xin Lu Yu Bai Jin Hui Nie zhou li Zhong lin Wang beijing institute of Nanoenergy and Nanosystems Chinese Academy of Sciences Beijing 100083 China School of Nanoscience and Technology University of Chinese Academy of Sciences Beijing 100049 China School of Materials Science and Engineering Georgia Institute of Technology Atlanta GA 30332-0245 USA Guang Oin Gu Chang Bao Han and Jing Jing Tian contributed equally to this work.

We developed a high-efficiency rotating triboelectric nanogenerator （R-TENG）- enhanced *** antibacterial polyimide （PI） nanofiber air filters for removing ultrafine particulate matter （PM） from ambient atmosphere. Compared to single- layered PI nanofiber filters, the multilayered nanofiber filter can completely remove all of the particles with diameters larger than 0.54 ffm and shows enhanced removal efficiency for smaller PM particles. After connecting with a R-TENG, the removal efficiency of the filer for ultrafine partides is further enhanced. The highest removal efficiency for ultrafine particulate matter is 94.1% at the diameter of 53.3 nm and the average removal efficiency reached 89.9%. Despite an increase in the layer number, the thickness of each individual layer of the film decreased, and hence, the total pressure drop of the filter decreased instead of increasing. Moreover, the nanofiber film exhibited high antibacterial activity because of the addition of a small amount of silver nanoparticles. This technology with zero ozone release and low pressure drop is appropriate for cleaning air, haze treatment, and bacterial control.

关键词： triboelectricnanogenerator antibacterial property electrospinnin Ag-polyimide nanofiber air filter,ultrafine particle

Hydrothermal-sedimentary dolomite—A case from the Middle Permian in eastern Junggar Basin,china

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Journal of Palaeogeography 2020年第4期9卷 415-437页

作者： Shuai Zhang Yi-Qun liu Hong li xin Jiao Ding-Wu zhou State Key Laboratory of Continental Dynamics Northwest UniversityXi'an 710069Shaanxi ProvinceChina Department of geology Northwest UniversityXi'an 710069Shaanxi ProvinceChina Key Laboratory of Alpine Ecology Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China University of chinese academy of sciences Beijing 100049China

The Middle Permian Lucaogou Formation in the Jimusar Sag,eastern Junggar Basin,NW china,was deposited in a salt lake within an intracontinental rift basin with intense hydrothermal ***-sedimentary dolomite in the form of three types of dolostones,namely,analcime-feldspar dolostone(AFD),silicic dolostone(SD)and buddingtonite-albite dolostone(BAD),related to syn-sedimentary hydrothermal activity at lake bottom was *** characteristics and formation mechanism of the dolomite were studied based on micron-scale petrographic and isotopic geochemical *** syn-depositional formation of these dolostones was indicated by their rock-mineral features and syn-sedimentary deformation *** dolomite was composed of relatively poorly ordered proto-dolomite crystals with micron-sized spherical or sub-spherical morphology and coexisted with hydrothermal minerals,including analcime,buddingtonite,albite and *** clasts were replaced by the dolomite,indicating high-temperature conditions during *** remarkably low strontium isotopic compositions of the dolostones(87Sr/86Sr with an average of 0.705687)indicated that mantle-derived materials might have involved in the ore-forming *** dolostones had positiveδ13CPDB values(with an average of 6.94‰)and negativeδ18OPDB values(with an average of-8.12‰).Based on theδ18OPDB values,the formation temperatures of the dolomite were at least^25ºC higher than those of the penecontemporaneous dolomite in the Lucaogou Formation in the study *** is concluded that the dolomite precipitated from hydrothermal fluid erupting at the lake *** possible genetic models are *** suggest that the hydrothermal-sedimentary dolomite is an important genetic type,and this study may help increase the awareness of this understudied type of dolomite.

关键词： Dolomite genesis Hydrothermal sedimentary dolomite Permian Lucaogou Formation Jimusar Sag Junggar Basin

A video camera recording method for measuring terminal velocity of seed dispersal by wind

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Journal of Forestry Research 2021年第1期32卷 81-90页

作者： Minghu liu Zhiming xin Zhi Su Yingming Zhao xinle li Zhimin liu Mariano ACony Wei liang Xuanping qin Jianqiang Qian Xue Cui Quanlai zhou Experimental Center of Desert Forestry Chinese Academy of Forestry1 Shiyan LaneTuanjie RoadDengkou 015200People’s Republic of China institute of Applied Ecology Chinese Academy of Sciences72 Wenhua RoadShenyang 110016People’s Republic of China Instituto Argentino de Investigaciones de las Zonas Aridas-CONICET CC.5075500 MendozaArgentina University of chinese academy of sciences 19 Yuquan RoadBeijing 100049People’s Republic of China Henan Agricultural University 63 Nongye RoadZhengzhou 450002People’s Republic of China Station of Forest and Grassland Pest Control and Quarantine Shenyang 110804Liaoning ProvincePeople’s Republic of China

An accurate and convenient method is essential for measuring the terminal velocity of seeds dispersed by *** and random errors produced by existing methods lower the accuracy and convenience in determining seed terminal *** this study,a video camera was used to record the falling process of forty-one species of wind-borne seed with eight appendage structures and seven aerodynamic behaviors in a settling tower at a speed of 50 frames per second(fps).The videos were analyzed by Quick Time Player to determine seed acceleration height,acceleration time,and terminal *** results showed that acceleration height and time,terminal velocity,and the diff erence between terminal velocity and descent velocity(DTD)increased with wing *** with dropping methods,the camera recording method eliminated the eff ect of acceleration and corrected seed terminal *** on wing loading,release heights were determined for accurate measurement of terminal velocity of diff erent *** method,due to its inexpensive equipment,high accuracy,easy observation and operation,can be applied to measure the terminal velocity of wind dispersed seeds,and provides a promising method in exploring the dispersal process of seeds.

关键词： Acceleration height Acceleration time Settling tower Aerodynamic behavior Appendage structures

Mycoplasma pneumoniae Macrolide Resistance and MLVA Typing in Children in beijing,china,in 2.16:Is It Relevant?

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Biomedical and Environmental sciences 2020年第12期33卷 916-924页

作者： DOU Hai Wei TIAN Xiu Jun xin De li WEI Ran zhou Wei WANG Hong qin Xuan Guang SHAO Jun Yan XU Bao Ping GE li Xia SHI Da Wei beijing Tropical Medicine Research institute Beijing Friendship HospitalCapital Medical UniversityBeijing 100050China beijing Key Laboratory for Research on Prevention and Treatment of Tropical Disease Capital Medical UniversityBeijing 100050China qingdao Women and Children`s Hospital Qingdao 266000ShandongChina Department of Pediatrics Peking University Third HospitalBeijing 100191China Department of Pediatrics Civil Aviation General HospitalBeijing 100123China Department of Pediatrics Beijing Chao-yang HospitalCapital Medical UniversityBeijing 100043China Department of Pediatrics Emergency General Hospital(China Meitan General Hospital)Beijing 100028China Department of Respiratory Beijing Children’s HospitalCapital Medical UniversityBeijing 100045China Department of Pediatrics Beijing Friendship HospitalCapital Medical UniversityBeijing 100050China

Objective The aim of this study is to investigate the macrolide resistance rate and molecular type with multiple-locus variable-number tandem-repeat analysis(MLVA)of Mycoplasma pneumoniae of beijing in 2.16 in pediatric *** Real-time quantitative polymerase chain reaction(PCR)was used to identify ***,and MLVA was *** domain V of the 23 S rRNA was sequenced to detect macrolide-resistant point *** also investigated the activities of antibiotics against *** isolates in *** The PCR detection rate of *** in children in beijing was 40%,and the macrolide resistance rate was 66%.The A2063 G mutation in the 23 S rRNA V region is the dominant mutation(137/146,93.84%),whereas the A2064 G mutation is rare(9/146,6.16%).Seventy-three samples were typed successfully by MLVA typing,including 86.3%(63/73)were MLVA type 4-5-7-2,and 13.7%(10/73)were MLVA type *** other types were *** strains were resistant to levofloxacin or *** In 2.16,a specific decrease in the macrolide resistance rate occurred in *** detection rate and macrolide resistance rate of outpatients are lower than those of *** A2063 G mutants *** have high levels of resistance to erythromycin and *** primary MLVA type is 4-5-7-2,followed by *** other MLVA types were *** strains resistant to tetracycline or levofloxacin were found in vitro.

关键词： Culture Macrolide resistance MLVA type Mycoplasma pneumoniae

CEPC Technical Design Report

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Radiation Detection Technology and Methods 2024年第1期8卷 I0003-I0016,1-1091页

作者： Waleed Abdallah Tiago Carlos Adorno de Freitas Konstantin Afanaciev Shakeel Ahmad Ijaz Ahmed Xiaocong Ai Abid Aleem Wolfgang Altmannshofer Fabio Alves Weiming An Rui An Daniele Paolo Anderle Stefan Antusch Yasuo Arai Andrej Arbuzov Abdesslam Arhrib Mustafa Ashry Sha Bai Yu Bai Yang Bai Vipul Bairathi Csaba Balazs Philip Bambade Yong Ban Tripamo Bandyopadhyay Shou-Shan Bao Desmond P.Barber Ayse Bat Varvara Batozskaya Subash Chandra Behera Alexander Belyaev Michele Bertucci Xiao-Jun Bi Yuanjie Bi Tianjian Bian Fabrizio Bianchi Thomas Biekotter Michela Biglietti Shalva Bilanishvili Deng Binglin Denis Bodrov Anton Bogomyagkov Serge Bondarenko Stewart Boogert Maarten Boonekamp Marcello Borri Angelo Bosotti Vincent Boudry Mohammed Boukidi Igor Boyko Ivanka Bozovic Giuseppe Bozzi Jean-Claude Brient Anastasiia Budzinskaya Masroor Bukhari Vladimir Bytev Giacomo Cacciapaglia Hua Cai Wenyong Cai Wujun Cai Yijian Cai Yizhou Cai Yuchen Cai Haiying Cai Huacheng Cai Lorenzo Calibbi Junsong Cang Guofu Cao Jianshe Cao Antoine Chance Xuejun Chang Yue Chang Zhe Chang xinyuan Chang Wei Chao Auttakit Chatrabhuti Yimin Che Yuzhi Che Bin Chen Danping Chen Fuqing Chen Fusan Chen Gang Chen Guoming Chen Hua-xing Chen Huirun Chen Jinhui Chen Ji-Yuan Chen Kai Chen Mali Chen Mingjun Chen Mingshui Chen Ning Chen Shanhong Chen Shanzhen Chen Shao-Long Chen Shaomin Chen Shiqiang Chen Tianlu Chen Wei Chen Xiang Chen Xiaoyu Chen xin Chen Xun Chen Xurong Chen Ye Chen Ying Chen Yukai Chen Zelin Chen Zilin Chen Gang Chen Boping Chen Chunhui Chen Hok Chuen Cheng Huajie Cheng Shan Cheng Tongguang Cheng Yunlong Chi Pietro Chimenti Wen Han Chiu Guk Cho Ming-Chung Chu Xiaotong Chu Ziliang Chu Guglielmo Coloretti Andreas Crivellin Hanhua Cui Xiaohao Cui Zhaoyuan Cui Brunella D'Anzi ling-Yun Dai xinchen Dai Xuwen Dai Antonio De Maria Nicola De Filippis Christophe De La Taille Francesca De Mori Chiara De Sio Elisa Del Core Shuangxue Deng Wei-Tian Deng Zhi Deng Ziyan Deng Bhupal Dev Tang Dewen Biagio Di Micco Ran Ding Siqin Dingl Yadong Ding Haiyi Dong Jianin AGH University of Science and Technology Faculty of Physics and Applied Computer ScienceKrakow Anhui University HefeiAnhui Applied Physics Department Federal Urdu University of ArtsScience and TechnologyIslamabad Banaras Hindu University Institute of ScienceVaranasi Bandirma Onyedi Eylul University Bandirma Beihang University Beijing beijing Computational Science Research Center Beijing beijing Conveyi LTD Beijing beijing Glass Research institute Co. LtdBeijing beijing institute of Technology Beijing beijing Normal University Beijing Brown University ProvidenceRI Budker institute of Nuclear Physics Novosibirsk Cadi Ayyad University Laboratory of Fundamental and Applied PhysicsPolydisciplinary FacultyMarrakech Cairo University Giza Center for Theory and Computation National Tsing Hua UniversityHsinchu Central china Normal University WuhanHubei Central South University ChangshaHunan Centro de Fisica Teorica de Particulas Universidade Tecnica de LisboaLisboa Chengdu KaitengSifang Digital Radio&TV Equipment Co. LtdChengduSichuan china academy of engineering physics MianyangSichuan china building materials academy Beijing china Center of Advanced Science and Technology Beijing china institute of Atomic Energy Beijing china Jiliang University HangzhouZhejiang china Nuclear Instrument CO. LTDBeijing china University of Geosciences Beijing china University of Geosciences WuhanHubei china University of Mining and Technology XuzhouJiangsu china West Normal University NanchongSichuan Chongqing University Department of PhysicsChongqing Chulalongkorn University Bangkok City University of Hong Kong Department of PhysicsHong Kong Cockcroft institute Daresbury Cornell University IthacaNY CPPM(AMU/IPhU&CNRS/INP) Marseille Dalian Minzu University DalianLiaoning Dalian University of Technology Department of PhysicsDalian Deutsches Elektronen-Synchrotron DESY Hamburg Dzhelepov Laboratory of Nuclear Problems of Joint institute for Nuclear Research(DLNP JINR) Dubna East china University Of Science And Technol

The Circular Electron Positron Collider(CEPC)is a large scientific project initiated and hosted by china,fostered through extensive collaboration with international *** complex comprises four accelerators:a 30 GeV linac,a 1.1 GeV Damping Ring,a Booster capable of achieving energies up to 180 GeV,and a Collider operating at varying energy modes(Z,W,H,and tt).The linac and Damping Ring are situated on the surface,while the subterranean Booster and Collider are housed in a 100 km circumference underground tunnel,strategically accommodating future expansion with provisions for a potential Super Proton Proton Collider(SPPC).The CEPC primarily serves as a Higgs *** its baseline design with synchrotron radiation(SR)power of 30 MW per beam,it can achieve a luminosity of 5×10^(34)cm^(-2)s^(-1)per interaction point(IP),resulting in an integrated luminosity of 13 ab^(-1)for two IPs over a decade,producing 2.6 million Higgs *** the SR power to 50 MW per beam expands the CEPC's capability to generate 4.3 million Higgs bosons,facilitating precise measurements of Higgs coupling at sub-percent levels,exceeding the precision expected from the HL-LHC by an order of *** Technical Design Report(TDR)follows the Preliminary Conceptual Design Report(Pre-CDR,2.15)and the Conceptual Design Report(CDR,2.18),comprehensively detailing the machine's layout,performance metrics,physical design and analysis,technical systems design,R&D and prototyping efforts,and associated civil engineering ***,it includes a cost estimate and a preliminary construction timeline,establishing a framework for forthcoming engineering design phase and site selection *** is anticipated to begin around 2027-2028,pending government approval,with an estimated duration of 8 *** commencement of experiments and data collection could potentially be initiated in the mid-2030s.

关键词： initiated exceeding precise

Phytosphinganine Affects Plasmodesmata Permeability via Facilitating PDLP5-Stimulated Callose Accumulation in Arabidopsis

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Molecular Plant 2020年第1期13卷 128-143页

作者： Ning-Jing liu Tao Zhang Zhao-Hui liu xin Chen Hui-Shan Guo Bai-Hang Ju Yuan-Yuan Zhang Guo-Zhu li Qiang-Hui zhou Yong-Mei qin Yu-Xian Zhu State Key Laboratory of Protein and Plant Gene Research College of-Life SciencesPeking UniversityRoom 228Jinguang BuildingNo5 in Yi-He Yuan RoadBeijing 100871People's Republic of China State Key Laboratory of Plant Genomics Institute of MicrobiologyChinese Academy of SciencesBeijing 100101 People's Republic of China institute for Advanced Studies Wuhan UniversityWuhan 430072People's Republic of China

Plant plasmodesmata (PDs) are specialized channels that enable communication between neighboring cells. The intercellular permeability of PDs, which affects plant development, defense, and responses to stimuli, must be tightly regulated. However, the lipid compositions of PD membrane and their impact on PD permeability remain elusive. Here, we report that the Arabidopsis sld1 sld2 double mutant, lacking sphingolipid long-chain base 8 desaturases 1 and 2, displayed decreased PD permeability due to a significant increase in callose accumulation. PD-located protein 5 (PDLP5) was significantly enriched in the leaf epidermal cells of sld1 sld2 and showed specific binding affinity to phytosphinganine (t18:0), suggesting that the enrichment of t18:0-based sphingolipids in sld1 sld2 PDs might facilitate the recruitment of PDLP5 proteins to PDs. The sld1 sld2 double mutant seedlings showed enhanced resistance to the fungal-wilt pathogen Verticillium dahlia and the bacterium Pseudomonas syringae pv. tomato DC3000, which could be fully rescued in sld1 sld2 pdlp5 triple mutant . Taken together, these results indicate that phytosphinganine might regulate PD functions and cell-to-cell communication by modifying the level of PDLP5 in PD membranes.

关键词： plasmodesmata phytosphinganine sphingolipid binding motif PDLP5

Macrophage CARD9 mediates cardiac injury following myocardial infarction through regulation of lipocalin 2 expression

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Signal Transduction and Targeted Therapy 2023年第11期8卷 5383-5393页

作者： Yan liu Yi-hui Shao Jun-meng Zhang Ying Wang Mei zhou Hui-qin li Cong-cong Zhang Pei-jie Yu Shi-juan Gao Xue-rui Wang li-xin Jia Chun-mei Piao Jie Du Yu-lin li beijing Anzhen Hospital Capital Medical UniversityThe Key Laboratory of Remodeling-Related Cardiovascular DiseasesMinistry of EducationBeijing Collaborative Innovative Research Center for Cardiovascular DiseasesBeijing Institute of Heart Lung and Blood Vessel DiseasesBeijing100029China

Immune cell infiltration in response to myocyte death regulates extracellular matrix remodeling and scar formation after myocardial infarction(MI).Caspase-recruitment domain family member 9(CARD9)acts as an adapter that mediates the transduction of pro-inflammatory signaling cascades in innate immunity;however,its role in cardiac injury and repair post-MI remains *** found that Card9 was one of the most upregulated Card genes in the ischemic myocardium of ***9 expression increased considerably 1 day post-MI and declined by day 7 ***,CARD9 was mainly expressed in F4/80-positive ***9 knockout(KO)led to left ventricular function improvement and infarct scar size reduction in mice 28 days ***,Card9 KO suppressed cardiomyocyte apoptosis in the border region and attenuated matrix metalloproteinase(MMP)*** sequencing revealed that Card9 KO significantly suppressed lipocalin 2(Lcn2)expression *** LCN2 and the receptor solute carrier family 22 member 17(SL22.17)were detected in ***,we demonstrated that Card9 overexpression increased LCN2 expression,while Card9 KO inhibited necrotic cell-induced LCN2 upregulation in macrophages,likely through NF-κ***2 KO showed beneficial effects post-MI,and recombinant LCN2 diminished the protective effects of Card9 KO in ***2 KO reduced MMP9 post-MI,and Lcn2 overexpression increased Mmp9 expression in ***22.17 knockdown in macrophages reduced MMP9 release with recombinant LCN2 *** conclusion,our results demonstrate that macrophage CARD9 mediates the deterioration of cardiac function and adverse remodeling post-MI via LCN2.

关键词： CARD9 protective immunity

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