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湖南安化渣滓溪锑矿床成矿机理研究 |
[15] Zartman R E, Doe B R. Plumbotectonics-the model [J].Tectonophysics, 1981, 75: 135-162.Mineralization mechanism of the Zhazixi Sb deposit in Anhua,Hunan Province |
投稿时间:2015-09-09 修订日期:2015-09-09 |
DOI: |
中文关键词: 成矿流体 地球化学 渣滓溪 安化 |
英文关键词:ore-forming fluid geochemistry the Zhazixi Sb deposit Anhua |
基金项目:中国地质调查局项目国家级岩心标本采集及数字化(编号:1212011120404)资助. |
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中文摘要: |
位于湘西雪峰山成矿带内的湖南安化渣滓溪锑矿床,是湘西赋存于板溪群的典型矿床。通过对渣滓溪锑矿床流体包裹体和铅、氢氧同位素地球化学分析,研究其成矿流体性质和演化,并探讨矿床成矿流体和成矿物质来源。结果表明:流体包裹体主要为气液两相包裹体,包裹体成分以H2O、CO2为主,成矿流体均一温度、盐度分别为180~240℃,7.0%~11.0%,为中低温-中低盐度的流体;206Pb/204Pb为18.079~18.815,207Pb/204Pb为15.616~15.674,208Pb/204Pb为38.167~38.928;Pb同位素组成显示成矿物质来源为壳幔混合来源;H、O同位素分析认为成矿流体来源主要为变质流体。 |
英文摘要: |
TheSZhazixiSantimonySdepositSinSAnhua,SHunanSprovince,SlocatedSinSXuefengSmountainSmetallogenicSbeltSinSWesternSHunan,SisSaStypicalSoreSareaSinSWesternSHunanShostedSinSBanxiSGroup.SBasedSonStheSSfluidSinclusionSandSgeochemicalSanalysis,StheSsourcesSofSore-formingSfluidsSwereSdiscussed.SItSshowsSthat theSfluidsSinclusionSresultsSshowSthatSthereSareSonlySgasSandSliquidSphases,SandStheSgasScompositionsSareSH2OSandSCO2.STheShomogenizationStemperatureSandSsalinitySareSrangedSfromS180℃StoS240℃SandS7.0%StoS11.0%Srespectively,SwhichSisSofSmiddle-lowStemperatureSandSmiddle-lowSsalinitySfluid.S206Pb/204PbSratiosSareSrangeSfromS18.079StoS18.815,SwhileS207Pb/204PbSrationsSareSrangeSfrom15.616StoS15.674.ThenS208Pb/204PbSratiosSareSrangeSfromS38.167StoS38.928.TheSPbSisotopicsSindicateStheSore-formingSmaterialSsourcesSisSofScrust-mantleSmixed,SandStheSore-formingSfluidSmainlySisSmetamorphicSfluidSonSisotopeSanlysisSforS HSandSO. |
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