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Petrogenesis, oxidation state and volatile content of Dongga tonalite in the Gangdese belt, Xizang: Implication for porphyry Cu mineralization

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Acta Geochimica 2024年第2期43卷 280-295页

作者： Liqiang Zhang Xilian Chen shaohao zou Deru Xu Xuena Wang Hua Wang State Key Laboratory of Nuclear Resources and Environment East China University of TechnologyNanchang 330013China School of Earth Sciences East China University of TechnologyNanchang 330013China

The Gangdese belt in Xizang has experienced both Jurassic subduction and Cenozoic continental collision processes, making it a globally renowned region for magmatic rocks and porphyry copper deposits. Numerous Jurassic intrusions have been identified in the belt. Apart from the quartz diorite porphyry in the large Xietongmen deposit, the Cu mineralization potential of other Jurassic intrusions in this belt remains unclear. This study presents zircon U–Pb dating and trace elements, apatite major and trace elements as well as published whole-rock geochemical and isotopic data of the Dongga tonalite in the central part of the Gangdese belt, aiming to reveal the petrogenesis, oxidation state, volatile content, and Cu mineralization potential of this intrusion. The Dongga tonalite has a zircon U–Pb age of 179.4 ± 0.9 Ma. It exhibits high whole-rock V/Sc values(8.76–14.6), relatively low apatite CeN/CeN*ratios(1.04–1.28), elevated zircon(Eu/Eu*)Nvalues(an average of 0.44), high Ce4+/Ce3+values(205–1896), and high ?FMQ values(1.3–3.7), collectively suggesting a high magmatic oxygen fugacity. The Dongga tonalite features amphibole phenocrysts, relatively high whole-rock Sr/Y ratios(20.3–58.9), and lower zircon Ti temperatures (502–740 ℃), reflecting a high magmatic water content. Estimation of magmatic sulfur content(0.002–0.024 wt%) based on apatite SO3contents indicates an enriched magma sulfur content. Combined with previous studies and the collected Sr–Nd–Hf isotopes, the Dongga tonalite is derived from juvenile lower crust related with subduction of the Neo-Tethys oceanic slab. When compared with Xietongmen orebearing porphyries, the Dongga tonalite exhibits remarkable similarities with the Xietongmen ore-bearing porphyries in terms of magma source, tectonic background, magmatic redox state, and volatile components, which indicates that the Dongga tonalite has a high porphyry Cu mineralization potential, and therefore, provides important guidance for the future mineral

关键词： Tonalite Zircon Apatite Mineralization potential Dongga area Gangdese belt

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Unveiling Nb-Ta mineralization processes:Insight from quartz textural and chemical characteristics in the Songshugang deposit,Jiangxi Province,South China

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Acta Geochimica 2024年第4期43卷 737-753页

作者： Hengsong Zhang shaohao zou Xilian Chen Deru Xu Zhilin Wang Yongwen Zhang Hua Wang State Key Laboratory of Nuclear Resources and Environment East China University of TechnologyNanchang 330013JiangxiChina School of Earth Sciences East China University of TechnologyNanchang 330013JiangxiChina Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring Ministry of EducationSchool of Geosciences and Info-PhysicsCentral South UniversityChangsha 410083China Jiangxi Mineral Resources Guarantee and Service Center Nanchang 330025JiangxiChina

The Songshugang deposit is a large Ta-Nb deposit in South China,with Ta-Nb mineralization associated genetically with the granite and pegmatite.A diversity of quartz from topaz-albite granite,quartz-mica pegmatite,quartz-feldspar pegmatite,and quartz-fluorite pegmatite at Songshugang was studied by CL and LA-ICP-MS in order to constrain enrichment mechanisms of Nb and Ta and to find geochemical indicators of quartz for rare metal *** image illuminates a canvas of complexity,the quartz from topaz-albite granite,quartz-mica pegmatite,quartz-feldspar pegmatite,and quartz-fluorite pegmatite,exhibits numerous dark CL streaks,patches,and a series of healed *** textures suggest that the rocks were fractured because of deep crustal pressure,and underwent later hydrothermal metasomatism and quartz *** quartz from quartz-fluorite pegmatite present limited patches or fractures but distinct growth bands,indicating that the melt fluid composition during the formation of quartz at this stage varies greatly and is less aff ected by mechanical *** LA-ICP-MS analysis of quartz shows that there is a positive correlation between Al and Li in the quartz from topaz-albite granite,quartz-mica pegmatite,quartz-feldspar pegmatite,to quartz-fluorite pegmatite,indicating that Al mainly enters the quartz lattice through charge compensation substitution mechanism with ***,our data deviate from the theoretical Li:Al mass ratio of~1:3.89 in quartz,indicating that there may be competition between H^(+)and Li in a water-rich magmatic *** quartz from topaz-albite granite is enriched in K and Na elements,and the quartz from quartz-fluorite pegmatite is enriched in fluorite with a low Ca content in quartz,further elucidating that these rocks were subjected to hydrothermal *** topaz-albitite granite to quartz-fluorite pegmatite,Al,Li and Ge content and Al/Ti,Ge/Ti,Sb/Ti ratios in quartz gradually increased,but

关键词： Nb-Ta deposit Quartz Cathodoluminescence LA-ICP-MS Trace elements Magma-hydrothermal evolution

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湘西沃溪金锑钨矿床燕山期幕式成矿作用:来自原位白钨矿U-Pb定年与黄铁矿元素-同位素的约束

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岩石学报 2024年第1期40卷 215-240页

作者：李彬许德如柏道远陈旭邹少浩代俊峰马文曾广乾东华理工大学核资源与环境国家重点实验室南昌330013 湖南省地质调查所长沙410114 湖南省地球物理地球化学调查所长沙410014 中南大学有色金属成矿预测与地质环境监测教育部重点实验室长沙410083 中国地质科学院地质研究所北京100037 合肥工业大学资源与环境工程学院合肥230009

沃溪矿床位于江南造山带中段,是一座同时具有金、锑、钨大规模成矿的大型金矿,近年的研究揭示其主要形成于燕山期,但该矿的成矿物质源区及矿床成因尚存争议。基于此,本文利用SEM、EPMA、LA-MC-IF-ICP-MS等原位分析技术,对该矿床多世代... 详细信息

沃溪矿床位于江南造山带中段,是一座同时具有金、锑、钨大规模成矿的大型金矿,近年的研究揭示其主要形成于燕山期,但该矿的成矿物质源区及矿床成因尚存争议。基于此,本文利用SEM、EPMA、LA-MC-IF-ICP-MS等原位分析技术,对该矿床多世代黄铁矿的结构、成分及同位素组成和成矿期白钨矿的U-Pb年代学进行了研究。在沃溪矿床中,识别出3个世代5种类型黄铁矿(Py),即成矿前Py1,成矿第二阶段Py2和第三阶段的Py3a、Py3b和Py3c。黄铁矿微区成分及围岩蚀变特征指示,成矿期Au、As和Cu耦合,Au主要以固溶体(Au+)的形式存在于Py3b的晶格中;As-取代S-进入黄铁矿是促进晶格金富集的主要因素;而强烈的水-岩反应是导致成矿期热液黄铁矿Co/Ni<1的原因。黄铁矿的原位微量元素和S-Pb同位素组成(δ34 S V-CDT值:Py2为-4.33‰~-1.61‰,Py3a为-6.36‰~3.59‰,Py3b为-4.36‰~3.59‰,Py3c为-2.21‰~-0.65‰;206 Pb/204 Pb、207 Pb/204 Pb、208 Pb/204 Pb值:Py2分别为18.029、15.618和38.653,Py3a分别为18.047~18.341、15.594~15.698、38.781~39.394)及其在环带结构中的变化,指示第二及第三成矿阶段流体性质存在显著差异。成矿第三阶段白钨矿的LA-ICP-MS U-Pb定年结果为132.7±7.9Ma(1σ,n=31,MSWD=0.43)。结合前人研究成果,我们认为沃溪金锑钨矿床主要形成于燕山期148~140Ma的黑钨矿(少量白钨矿、黄铁矿和金)和~130Ma的金-锑-白钨矿两阶段幕式成矿作用。早阶段成矿为下伏基底岩石重熔岩浆演化出的相对高温的还原性流体;晚阶段金-锑-白钨矿成矿以脉冲性幔源流体为主,金主要具地幔来源,而锑和钨可能来源于壳源与幔源流体混合演化出的富矿热液,成矿的脉动性可能与深部断层阀机制有关。金的主要沉淀机制为水岩反应和硫化作用,流体混合是辉锑矿与白钨矿的沉淀机制。富集交代的岩石圈地幔活化和古太平洋板块俯冲后撤、拆沉导致的岩石圈大规模伸展是江南造山带中段(湖南)燕山晚期金多金属大规模成矿的关键因素及构造背景,区域上具有进一步寻找陆内弧后伸展背景金多金属矿床的潜力。

关键词：江南造山带沃溪Au-Sb-W矿白钨矿U-Pb定年黄铁矿 S-Pb同位素

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宜春Ta-Nb与黄山Nb-Ta矿床成矿元素差异性富集的因素研究

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大地构造与成矿学 2024年第3期48卷 597-620页

作者：王雪娜陈喜连陈龙许德如邹少浩万泰安王国建李博东华理工大学核资源与环境国家重点实验室江西南昌330013 东华理工大学地球科学学院江西南昌330013 中南大学有色金属成矿预测与地质环境监测教育部重点实验室湖南长沙410083 江西省地质局第四地质大队江西萍乡337000

宜春、黄山地区均位于华南板块钦杭结合带上。宜春Ta-Nb矿床与雅山岩体密切相关,为富Ta的Ta-Nb矿床,赋矿矿物主要为钽锰矿和铌钽锰矿;黄山Nb-Ta矿床与黄山岩体密切相关,为富Nb的Nb-Ta矿床,赋矿矿物以铌铁矿和铌钽铁矿为主。目前,二者在... 详细信息

宜春、黄山地区均位于华南板块钦杭结合带上。宜春Ta-Nb矿床与雅山岩体密切相关,为富Ta的Ta-Nb矿床,赋矿矿物主要为钽锰矿和铌钽锰矿;黄山Nb-Ta矿床与黄山岩体密切相关,为富Nb的Nb-Ta矿床,赋矿矿物以铌铁矿和铌钽铁矿为主。目前,二者在成矿元素上差异性富集的原因尚不清楚。本文在详细的岩相学观察基础上,对雅山和黄山岩体多期岩相中的云母进行主量和微量元素分析,并结合前人研究,综合探讨控制成矿元素Nb、Ta差异性富集的关键因素。雅山岩体为强过铝质S型花岗岩,具有高Al低碱、P和Li含量较高的特征,岩浆源区以古老地壳物质为主且源区熔融温度相对较低。黄山岩体为准铝质‒过铝质花岗岩,具有相对低Al高碱、P和Li含量低的特征,Zr+Nb+Ce+Y值为345~876μg/g,是典型的A型花岗岩,成岩岩浆主要来源于古老地壳部分熔融,且有相对较多新生地壳或地幔物质的参与,源区熔融温度较高。雅山岩体稀土元素总量较低,具有强烈的Eu负异常和明显的四分组效应;Nb/Ta值(0.32~4.91)、Zr/Hf值(3.96~32.0)较低,Rb/Ba值(1.06~6500)和Rb/Sr值(6.08~22750)较高,显示极高分异的特征;云母中的Ⅳ(F)平均值为–0.17,Ⅳ(Cl)平均值为–2.39,F富集程度较高,Cl富集程度较低。与之对比,黄山岩体稀土元素总量较高,呈现较强的Eu负异常和四分组效应;Nb/Ta值(3.80~45.2)、Zr/Hf值(13.3~30.1)较高,Rb/Ba值(2.61~136)和Rb/Sr值(9.46~521)较低,显示分异程度较高,但低于雅山岩体;云母中Ⅳ(F)平均值为0.01,Ⅳ(Cl)平均值为–3.52,F富集程度相对较低,较富集Cl挥发分。综上,岩浆富Al贫碱,分异演化极高,富F、P、Li,是形成富Ta的Ta-Nb矿床的重要因素;而岩浆贫Al富碱,分异演化较高,较富F、Li,贫P,且有更高比例新生地壳或地幔物质的加入,则有利于形成富Nb的Nb-Ta矿床。本研究认为岩浆源区及熔融温度、构造背景、岩浆演化程度、岩浆成分综合控制了宜春和黄山矿床Nb、Ta成矿元素的差异性富集,对今后指导找矿勘查具有重要的指示意义。

关键词：铌钽矿床雅山岩体黄山岩体云母地球化学特征

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东昆仑驼路沟钴金矿床中黄铁矿的结构和成分特征及其对钴成矿作用的启示

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东华理工大学学报（自然科学版） 2024年第2期47卷 131-145页

作者：冯浩东邹少浩许德如陈喜连王华东华理工大学核资源与环境国家重点实验室江西南昌330013 东华理工大学地球科学学院江西南昌330013

驼路沟钴金矿床是我国少见的大型热液型矿床。为了深入认识该矿床(含)钴成矿过程,选取驼路沟矿床中的富钴黄铁矿为研究对象,通过岩相学、矿物学、微量元素特征和S同位素组成分析,确定黄铁矿结构、成矿流体特征、演化过程及成矿物质来源... 详细信息

驼路沟钴金矿床是我国少见的大型热液型矿床。为了深入认识该矿床(含)钴成矿过程,选取驼路沟矿床中的富钴黄铁矿为研究对象,通过岩相学、矿物学、微量元素特征和S同位素组成分析,确定黄铁矿结构、成矿流体特征、演化过程及成矿物质来源,进而揭示详细的成矿过程,以及黄铁矿对钴成矿的指示作用。研究表明,驼路沟含钴黄铁矿可分成三部分:晶型较好、偶见孔隙的黄铁矿核部;具有震荡环带,与硫镍钴矿、辉砷镍矿共生的黄铁矿幔部;晶型较好的黄铁矿边部。其中,黄铁矿核部富集Co、Ni等元素,幔部富集Co、Ni、As等元素,边部具有较高的As、Se含量和稍高的Au含量。三者对比显示,核部Co含量最高,幔部As含量最高,边部含有较高的Au,三者ω(Co)/ω(Ni)值绝大部分都大于1,指示其热液成因;从核部到幔部再到边部,Co、Ni含量逐渐降低,Se含量逐渐升高,说明其流体温度逐渐降低;黄铁矿中δ^(34)S值整体为-1.43‰~0.48‰,说明成矿物质主要来源于岩浆。黄铁矿的结构、微量元素特征、S同位素组成表明,驼路沟的成矿流体为富含Co、Ni、As等元素的低温热液流体。本研究对于揭示喷流热液型钴矿床成矿过程及指导类似矿床的找矿勘查具有重大意义。

关键词：黄铁矿微量元素 S同位素驼路沟钴金矿床

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A machine learning approach to tracking crustal thickness variations in the eastern North China Craton

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Geoscience Frontiers 2021年第5期12卷 215-223页

作者： shaohao zou Xilian Chen Deru Xu Matthew JBrzozowski Feng Lai Yubing Bian Zhilin Wang Teng Deng State Key Laboratory of Nuclear Resources and Environment East China University of TechnologyNanchang 330013China Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring Ministry of EducationSchool of Geosciences and Info-PhysicsCentral South UniversityChangsha 410083China State Key Laboratory for Mineral Deposits Research School of Earth Sciences and EngineeringNanjing UniversityNanjing 210023China

The variation of crustal thickness is a critical index to reveal how the continental crust evolved over its four billion ***,ratios of whole-rock trace elements,such as Sr/Y,(La/Yb)n and Ce/Y,are used to characterize crustal ***,sometimes confusing results are obtained since there is no enough filtered ***,a state-of-the-art approach,based on a machine-learning algorithm,is proposed to predict crustal thickness using global major-and trace-element geochemical data of intermediate arc rocks and intraplate basalts,and their corresponding crustal *** the validation processes,the root-mean-square error(RMSE)and the coefficient of determination(R2)score were used to evaluate the performance of the machine learning algorithm based on the learning dataset which has never been used during the training *** results demonstrate that the machine learning algorithm is more reliable in predicting crustal thickness than the conventional *** trained model predicts that the crustal thickness of the eastern North China Craton(ENCC)was-45 km from the Late Triassic to the Early Cretaceous,but-35 km from the Early Cretaceous,which corresponds to the paleo-elevation of 3.0±1.5 km at Early Mesozoic,and decease to the present-day elevation in the *** estimates are generally consistent with the previous studies on xenoliths from the lower crust and on the paleoenvironment of the coastal mountain of the ENCC,which indicates that the lower crust of the ENCC was delaminated abruptly at the Early Cretaceous.

关键词： Machine learning Geochemical database Crustal thickness Eastern North China Craton

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Geochronology and zircon geochemistry of auriferous intrusions in the Bumo deposit,Hainan Province,China

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Acta Geochimica 2022年第2期41卷 208-225页

作者： Yan Hai Bingtao Li Teng Deng Deru Xu Li Wang Youzhong Xiong Xiaowen Zhang Zhiling Wang shaohao zou Zhengpeng Ding Qian Qian Shichao Guo School of Earth Sciences East China University of TechnologyNanchang 330013China State Key Laboratory of Nuclear Resources and Environment East China University of TechnologyNanchang 330013China Zhaojin Group Co. LtdDongfang 572600HainanChina Jiangxi Engineering Laboratory on Radioactive Geoscience and Big Data Technology East China University of TechnologyNanchang 330013JiangxiChina Resource and Environment Survey Institute of Hainan Province Haikou 570206China School of Geosciences and Info-Physics Central South UniversityChangsha 410083China

Intrusion-related gold deposits(IRGS)are a lowgrade,large-tonnage exploration ***,auriferous magmatic rocks were found in the Bumo deposit of the Gezhen shear zone in Hainan Province,***,the geochronology and geochemical characteristics of the intrusions,as well as the mineralization potential,are still *** and petrographic work show that the sulfidebearing intrusions can be divided into diorite porphyrites,quartz monzodiorites and *** LA–ICP–MS U–Pb dating demonstrates that diorite porphyrites,quartz monzodiorites and monzodiorites were formed at104±1,114±1,114±1 Ma,*** addition,sulfides in Yanshanian intrusion-related gold mineralization haveδ;S values of 0.2–4.4%,lower than those in Hercynian-Indosinian(1.9–9.8%)orogenic deposits(ca.219–378 Ma)in the Gezhen shear *** addition,all these intrusions display close correlations between Eu/EuN*with Th/U,consistent with the differentiation of amphibole,apatite and titanite from a hydrous ***,zircon Eu/EuN*in the intrusions are higher than0.4,demonstrating that the magmatic rocks have high water contents and oxygen fugacity values,favorable for gold ***,the Yanshanian magmatic rocks can be a new potential gold exploration target in the Gezhen shear zone.

关键词： Hainan Bumo Intrusion-related mineralization Zircon trace elements Gold mineralization

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Structural deformation, metallogenic epoch and genetic mechanism of the Woxi Au-Sb-W deposit, Western Hunan Province, South China

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Science China Earth Sciences 2022年第12期65卷 2358-2384页

作者： Bin LI Deru XU Daoyuan BAI Guoxiang CHI Junfeng DAI Cheng GAO Teng DENG shaohao zou Wen MA Guojian WANG Yuexin LING Guangqian ZENG Yinmin LI State Key Laboratory of Nuclear Resources and Environment East China University of TechnologyNanchang 330013China School of Earth Sciences East China University of TechnologyNanchang 330013China Hunan Institute of Geological Survey Changsha 410116China Department of Geology University of ReginaRegina S4S 0A2SaskatchewanCanada

The remobilization,migration,precipitation,and enrichment of ore-forming elements are closely related to ***,detailed regional and ore-field structural analyses are critical for determining the genesis of a mineral *** Jiangnan Orogenic Belt(JOB)is an important gold polymetallic metallogenic belt in South China,which is characterized by multiple periods of gold mineralization in the Paleozoic and ***,the genesis of these gold polymetallic deposits is still not well understood due to a lack of systematic research on the regional geology,ore-controlling structures and metallogenic *** this study,a detailed structural survey at the surface and in the subsurface tunnels was conducted on the Woxi Au-Sb-W deposit,the genesis of which is relatively controversial among the gold polymetallic deposits in the JOB due to poor structural *** addition,a wolframite U-Pb dating was carried out to further constrain the relationship between structures and *** on the results of these studies,together with those from previous studies,it is proposed that the Woxi deposit and surrounding areas likely underwent six periods of regional deformation,which are constrained in time and geodynamic ***,we present a systematic discussion on the roles of ore-controlling structures in the transportation,distribution,and deposition of ore-forming elements and localization of *** to the wolframite dating results,structural analyses,and previous data,we propose that the Woxi Au-Sb-W deposit was formed in two stages during the Yanshanian:a W(wolframite)-Au mineralization stage at ca.140 Ma and an Au-Sb-W(scheelite)mineralization stage at<130 *** mineralizing events are interpreted to have a tight relationship with tectonic reactivation,and the ore-forming fluids were derived from deep sources,including those of magmatic or metamorphic *** Woxi deposit can therefore be classified as an“

关键词： Structural deformation Wolframite U-Pb age Metallogenic epoch Genetic mechanism Woxi Au-Sb-W deposit Western Hunan Province Jiangnan orogen

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Mass Transfer during Hematitization and Implications for Uranium Mineralization in the zoujiashan Deposit,Xiangshan Volcanic Basin

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Journal of Earth Science 2022年第2期33卷 422-434页

作者： Teng Deng Guoxiang Chi Xiongjie Zhang Zenghua Li Deru Xu Shengmiao Li Pengfei Du Pei Shang shaohao zou Wanpeng Zhou Ke Xu Hai Yan MaWen Zhengpeng Ding State Key Laboratory of Nuclear Resources and Environment East China University of TechnologyNanchang 330013China Key Laboratory of Uranium Geology China Geological SurveyTianjin 300170China School of Earth Sciences East China University of TechnologyNanchang 330013China Department of Geology University of ReginaRegina S4S 0A2Canada Engineering Research Center of Nuclear Technology Application Ministry of EducationEast China University of TechnologyNanchang 330013China Jiangxi Engineering Laboratory on Radioactive Geoscience and Big Data Technology East China University of TechnologyNanchang330013China Geological Bureau of Hunan Province Changsha 410014China Geologic Party No.208 China National Nuclear CorporationBaotou 410014China

The zoujiashan uranium deposit in the Xiangshan ore field is the largest volcanic-related uranium deposit in ***-and fluorite-type ores are the predominant mineralization *** in the Xiangshan ore field is closely associated with uranium mineralization,mainly occurring as hematitized rocks enclosing fluorite-type vein ores developed in pre-ore illitized porphyritic *** petrographic and mass balance calculation studies were conducted to evaluate the mechanisms for uranium precipitation and mass transfer during *** observations suggest that in the hematitized rocks,orthoclase is more altered than plagioclase,and quartz dissolution is common,whereas in the illitized rocks,pyrite commonly occurs within the altered biotite grains,and chlorite grains are locally *** balance calculations indicate that Na2O and U were gained,K2O,Ca O and Si O2were lost,whereas Fe2O3-t remained more or less constant during *** observations suggest that the hydrothermal fluids were Na-and U-rich and Ca-K-poor,and the Fe2+used for hematitization was locally derived,most likely from biotite,pyrite and chlorite in the host *** Fe2+is inferred to have played the role of reductant to precipitate uranium,and calculation indicates that oxidation of Fe2+provided by host rocks is sufficient to form ores of economic ***,the hematite-type ore is interpreted to be generated by the reaction between oxidized ore fluids and reduced components in host *** development of calcite and pyrite in the fluorite ores suggests that perhaps mixing between the U-rich fluid and another fluid carrying reduced sulfur and carbon may have also contributed to uranium mineralization,in addition to temperature and pressure drop associated with the veining.

关键词： Xiangshan uranium ore field mass transfer uranium precipitation hematitization redox reaction ore deposit geology

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石英的结构和微量元素特征研究进展及其在岩浆‒热液矿床中的应用

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大地构造与成矿学 2023年第2期47卷 407-427页

作者：卞玉冰邹少浩许德如陈喜连邓腾万泰安李博东华理工大学核资源与环境国家重点实验室江西南昌330013

石英(SiO_(2))具有稳定的化学性质和晶格结构,因此在地质演化过程中可以保存成岩成矿的基本信息。本文系统总结了国内外关于石英中微量元素的种类、分布、含量变化等诸多研究,详细论述了石英中微量元素的赋存状态和进入石英晶格中的机制... 详细信息

石英(SiO_(2))具有稳定的化学性质和晶格结构,因此在地质演化过程中可以保存成岩成矿的基本信息。本文系统总结了国内外关于石英中微量元素的种类、分布、含量变化等诸多研究,详细论述了石英中微量元素的赋存状态和进入石英晶格中的机制,以及控制这些微量元素进入石英中的因素:如温度、压力、pH值和流体/熔体成分等;介绍了岩浆‒热液矿床中石英复杂多样的结构,包括:单向固结结构(UST结构)、石英眼、晶洞以及雪球结构;评述了石英中微量元素的具体应用:石英的Ti温度计(TitaniQ)、Ti的扩散计时器、石英中Al温度计、Al的pH计,以及石英微量元素比值对岩浆‒热液过程的指示作用;最后总结了阴极发光(CL)在揭示石英中微量元素的扩散过程、石英的世代关系等方面的应用,及相关的分析测试方法。据此,利用石英的特性可了解寄主岩石的成因,并分析岩浆‒热液矿床中成矿流体的演化过程及石英中微量元素的沉淀机制,为找矿勘查提供依据。

关键词：石英石英结构微量元素阴极发光岩浆‒热液演化

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