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| 1 | Daughter minerals in fluid inclusions of garnet and diopside from Tongguanshan Copper Deposit by SEM/EDS and LRM显示文摘Tongguanshan copper deposit of Tongling large ore belt is one of the typical skarn copper deposits. Based on careful observation under microscope many daughter minerals including transparent ones and opaque ones have been distinguished in the fluid inclusions of garnet and diopside. The results of SEM/EDS (scanning electron microscope/energy dispersive spectrometer) and LRM (laser Raman microprobe) analysis show that these daughter minerals in garnet are sylvite, halite, sphalerite, chalcopyrite and carbonate. Sylvite daughter mineral is very popular in garnet and diopside. The existence of so much sylvite daughter mineral and other daughter minerals in the fluid inclusions indicates that the ore-forming fluid is of supper-high salinity and high potassium concentration. High potassium concentration in the fluid inclusions agrees with K-rich mesotype-acid rock and K-silicate alteration that occurred widely in this area. The daughter mineral assemblage in garnet and diopside is similar to the mineral assemblage of oreforming stage that followed skarn stage. | YulingXie JiuhuaXu ZengqianHou ZhusenYang WenyiXu YifengMeng BaohuaWang | 2004 | Journal of University of Science and Technology Beijing2004，11，6： | 2 |
| 2 | Rare earth elements in CO_2-fluid inclusions in mantle Iherzolite显示文摘Trace elements including REE (Rare Earth Elements) in fluid inclusions in lherzolite, olivine, orthopyroxene, and clinopy-roxene have been determined by heating-decrepitation and ICP-MS (Element Type Inductively Coupled Plasma-Mass Spectrometry)method. Normalized CO2 fluid/chondrite data show that mantle fluids are rich in REEs, especially LREEs (Light Rare Earth Ele-ments), several times or dozen times higher than mantle rocks and mantle mininerals. There are close relationships among the REEdata of olivine, orthopyroxene, clinopyroxene and lherzolite. Compared to the data of chemical dissolution method, it is believed thatREE data obtained from heating-decrepitation and ICP-MS technique are contributed by CO2 fluid inclusions. About 60% (massfraction) of tiny inclusions are observed not to be decrepitated above 1000℃, so REE data obtained are only contributed by decrepi-tated inclusions. Mantle fluids rich in LREE play an important role in mantle metasomatism, partial melting and mineralization. | JiuhuaXu YulingXie LijunWang HepingZhu LiquanWang | 2003 | Journal of University of Science and Technology Beijing2003，10，3： | 1 |
| 3 | Characteristics of Ore-Forming Fluids of Gold Deposits in Daqingshan District,Inner Mongolia,China显示文摘Locatedinthemid-westoflimerMongolia.Daqingshandistricthasmanygolddepositsoccurringalongaeast-weststrikingductileshearzonewithinagreelt,whichismainlycomposedoftheArcheanWulashangroup.Thehydrothermalmineralizationcanbedividedintofourstages:(1)pyrite-quartz,(2)quartz-Pyrite,(3)polymetallicsulfidesand(4)carbonates-quartz.Themajormetalylicmineralsintheoreofgold-bearingveinsarenativegold,electrum,pyrite,chalcopyriteandgalena,buttheganguemineralsaremainlyquartz,secondarilysericite,ankeriteandexcite.Prinipalalterationpatternsinthegolddepositsaresericithation,silicification,pyritizationcarbonatizationandchlorization.Aninvestigationonfluindinclusionsshowsthattheore-formingfluidswerelowinsalinitieandhighinCO2content,MeasuredδDoffluidinclusionsinquartzfromtheoreveinsrangesfrom-65‰to-104‰,butδ18Oquartzfrom10.0‰to12.8‰.Thesedatashowthatthewaterinhydrothermalfluidprecipitatingtheorebodiescouldhavebeenmainlymagmaticwaterandmetamorphicwaterbutlocalmeteoricwatermighttakepartinthelatemineralization. | Jiuhua Xu YulingXie Dayi Qian Rufu Dine Jianping Li (Resource Engineering School, University of Science and Technology Beijha Beijing 100083, China) (China University of Geosciences, Beijing 100083, China) | 1999 | International Journal of Minerals,Metallurgy and Materials1999，13，2： | 0 |
| 4 | Sulfide assemblages in granulite xenoliths from Hannuoba Basalt, Hebei Province, China显示文摘Granulite xenoliths are important samples for understanding the forming and evolution of the crust. The granulite xeno- liths enclosed in Cenozoic basalt of Hannuoba, Hebei Province, China, contain four types of sulfide assemblages: isolate rotundity enclosed sulfides, intergranular sulfides between minerals, secondary sulfide inclusions ranging in linear, and fissure-filling sulfides. Electron microprobe analysis shows that the components of sulfides are Ni-poor pyrrhotite with the molar ratios of (Ni+Co+Cu)/Fe less than 0.2. The molar ratios of (Fe+Cu+Co+Ni)/S are less than 0.875 of normal pyrrhotite, and are less than those of mantle xeno- liths, reflecting a sulfur-saturated environment. Pyrrhotite in various occurrences contains some Au and Ag, with the averages of 0.19wt%-0.22wt% Au and 0.01wt%-0.02wt% Ag, showing the gold mineralization related to the granulitization of low crust. Ni, Co and Cu have a normal correlation with S in pyrrhotite, indicating that heavy metal elements have a same source similar to sulfur be- cause of the degasification of upper mantle. | JiuhuaXu YulingXie XueleiChu JianmingLiu QianMao | 2005 | Journal of University of Science and Technology Beijing2005，12，2： | 0 |
| 5 | Fluid Inclusions and Daughter Minerals of Taibai Gold Deposit, ShaanXi Province, China显示文摘A discovery of daughter minerals in fluid inclusions of Taibai gold deposit, Shaanxi province has been focused on, which is a unique breccia-cemented gold-beating system. The breccia zone strikes NWW-SEE, occurring in Devonian strata of Southern Qinling Mountains. The cement is mainly composed of ankerite, pyrite, calcite and quartz. which may be divided into four main tectonic- mineralizing stages. Gold mainly occurs in pyrite and ankerite of stage II and IV. It is found that three types of fluid inclusions can be distinguished: (l) aqueous inclusions (type B); (2) CO2-rich inclusions (type C); (3) daughter minerals-containing inclusions (type A). LRM (Laser Raman Micro-probe) analyses shows that the content of CO2 occupies 54.4%-70.7% (mole fraction, so as the follows) in vapor phases of different type fluid inclusions. CH4 (5.2%-7.3%) and H,S (6.0%-12.7%) exist in both vapor and liquid phases. Many daughter minerals in fluid inclusions ofankerite and quartz have been found. Several kinds of daughter minerals, including ankerite, pyrite, arsenopyrite and halite, were determined by using SEM (scanning electron microscope) / EDS (energy dispersive spectrometer) technique. EPMA (electron probe micro-analysis) technique was also applied to study the daughter minerals exposed to the surface of polished thin sections. | YulingXie, Jiuhua Xu, Dayi Qian, Jianping Li Resources Engeneering School, University of Science and Technology Beijing, Beijing 100083, China | 2001 | Journal of University of Science and Technology Beijing2001，8，1： | 0 |
| 6 | Study on Sulfide-melt Inclusions in Mantle Xenoliths of Xinchang, Zhejiang显示文摘In minerals of mantle xenoliths captured within Tertiary alkali-basalt from Xinchang, Zhejiang province, China, many sulfidemelt inclusions were found by the observation of polished thin section. Electron microprobe analysis has been applied to detect the components of sulfide-melt inclusions. The result shows that the sulfide phases of inclusions are mainly pentlandite, and secondarily pyrrho- tite, The molar ratio of Ni to Fe, rNi,/rFe, of mineral phases in sulfide inclusions is related to olivine contents in host mantle xenoliths. The rNi/rNi, of sulfides from Xinchang samples has a possitive correlation to rFe+Ni,/rS. The rFe+Ni,/rS, becomes higher with the increasing of rNi/rFe In single sulfide-melt inclusions, rNi,/rFe, rFe+Ni,/r, and Ni contents increase from the center to edge, reflecting a result of different cooling speed in an inclusion. A comparison between the data from Hannuoba, West Eifel of Germany and Nograd-Gomor of east Europe suggests that the composition of the inclusions is different for each area, which indicated that a regional differentiation of sulfide in mantle fluids. | Jiuhua Xu Xuelei Chu YulingXie Fenglei Bie Dayi Qian University of Science and Technology Beijing, Beijing 100083, China China University of Geosciences, Beijing 100083, China The Research Center of Mineral Resources Exploration, Chinese Academy | 2000 | International Journal of Minerals,Metallurgy and Materials2000，14，1： | 0 |
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