云南省文山县官房钨矿床矿床地质和流体包裹体研究-论文.pdf

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1、1000-0569／2014／030(03)-0877—88ActaPetrologicaSinica岩石学报云南省文山县官房钨矿床矿床地质和流体包裹体研究张亚辉张世涛H范玉华。马洪杰张磊张东泽ZHANGYaHui，ZHANGShiTa0，FANYuHua3，MAH0ngJie，ZHANGLeiandZHANGD0ngZhe1．昆明理工大学国土资源工程学院，昆明6500932．云南大学资源环境与地球科学学院，昆明6500913．云南省地质调查局，昆明6502161．FacultyofResourceEngin

2、eering，KunmingUniversityofSciencesandTechnology，Kunming650093，China2．SchoolofResources，Environmentand胁Sciences，YunnanUniversity，Kunming650091，China3．YunnanPr~inemlBu~auofGeologicalSurvey，Kunming650216，China2012—11-08收稿．2013-02．21改回．ZhangYH，ZhangST，FanYH，MaH

3、J。ZhangLandZhangDZ．2014．GeologyandfluidinclusionstudyoftheGuanfangskarntypeWdeposit，WenshanCounty。YunnanProvinc~ActaPetrologicaSinica，30(3)：877-888AbstractTheGuanfangWdeposit，WenshanCounty。YunnanProvince，isoneoftllenewlydiscoveredgiantWdepositsintheYouj’ian

4、gmetallogenicbelt，SouthwestChina．ItislocatedinthesouthsideoftheBozhushandome．Wenshan．Funingfoldcluster．TungstenmineralizationisassociatedwiththeBozhushangranitewhichhasbeenclassifiedasS．typegraniteandwasformedintlleYanshanianintracontinentalcollisionregime．

5、OrebodiesarehostedintheoutercontactzonebetweentheYanshaniangraniteandtheCambrianclastic．carbonatestrata．Disseminationsandstockworksarctwocommonorestructures．Boththegraniteandwallrocksunderwentintensehydrothermalalteration，rangingoutwardlyfromphlogopition-ep

6、idotizationtodiposidization-epidotization，andtoforsteritationzoneswithincreasingdistancefromtheintrusion．Theore．formingprocesscanbedividedintotheearly．middleandlatestages，correspondingtoskaru，quartz—sulfideandcarbonate-quartz-fluorite，respectively．Primaryfl

7、uidinclusionsintheearlystageminerals(diopsideandessonite)areCH4-bearingNaC1-H2Oinclusionsanddaughtermineral-bearinginclusions，inthemiddlestagemineralsareCO2-CH4一N2-bearingNaCl—H2Oanddaughtermineral-bearinginclusioninquartz，whileinthelatestagemineralsareCO2-

8、bearingNaC1．H，Oinclusions．Halite—bearinginclusionscannotbeobserved．Thehomogeneoustemperaturesofthefluidinclusionsintheearlystagearemainly379～550％，withsalinitiesrangingfrom3．2％一9．9％NaCleqv．Inthemiddlest