黄秀菁

Xiamen University Institutional Repository

144 费红彩等 成矿流体演化与成矿物理化学　　　　　　　　　　　　　　　Ore-forming Fluid Evolution and MetallogeneticPhysical ChemistryFEI Hong-cai , XIAO Rong-ge(China University of Geosciences , Beijing 100083 , China)Abstract:The common ore-forming fluids are characteristic geological fluids , which are rich in volatile matter(VM)suchas CO2 and CH4 , also contain high saline concentration.The sources of VM are discussed , which mainly comes from thewater-rock process , organic matter decomposition , emanation from mantle and the magma during the course of fluids evo-lution.Alkali metals and halogen are also the polygenetic features.The important sources are seawater , leachwater insaliferous rock series and formation water.Also ore-forming fluid being rich in alkali metals can form through melting ofsaliferous rock series.Discussion on the fractionation of H-O-isotopes and S-isotope in the course of fluid evolution showsthat fluid fractionation is related to temperature , the ratio of water-rock or S-origin abundance.It is an important conclu-sion that the formation of ore-forming fluid is more related to geological action than the fluid origins.It is analyzed thatthe geological chemical characterization of the hydrothermal fluids from sea flood is of highδ34S , abundant middle REEand positive abnormity of Eu.This paper gives the conclusion of the physical-chemical condition of hydrothermal fluidsmineralization.It is believed that phase points of hydrothermal fluids are as follows ①1080℃,7.5×108Pa , that is theseparating-melting point between water solution and silicate rock melt;②Super critical point of the vapor-water solution ,the second water critical point(374.15℃, 2.21×107Pa);③Boiling point of water solution(≥100℃, ≥1×105Pa);④Freezing point of water solution(≤0℃,1×105Pa);⑤ Immiscibility temperature point of H2O-CO 2 system(266℃,2.15×108Pa).Key words:ore-forming water-rock reaction;H-O isotopes;metallogenetic physical chemistry·简　讯·《矿物岩石地球化学通报》入选 2001年度“CA千种表”　　根据美国化学会出版的《Chemical Abstracts Service Source Index Quarterly No.4》统计结果 , 2001 年度我国(包括台湾地区在内)共有 78种科技期刊入选“CA千种表” 。《矿物岩石地球化学通报》名列其中 ,在我国入选的 78种期刊中排名 24 ,在“CA千种表”中排名547。(厦门大学化学化工学院资料室　黄秀菁　供稿)

《矿物岩石地球化学通报》入选2001年度“CA千种表”

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《矿物岩石地球化学通报》入选2001年度“CA千种表”

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