胶东大尹格庄金矿与夏甸金矿矿化特征对比研究.pdf

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1、矿物岩石地球化学通报·研究成果·BulletinofMineralogy，PetrologyandGeochemistryVo1．34No．1，Jan．，2015胶东大尹格庄金矿与夏甸金矿矿化特征对比研究马伟东，张德贤，王智琳，鲁安怀，崔宇，左红燕中南大学有色金属成矿预测教育部重点实验室，地球科学与信息物理学院，长沙410083摘要：岩矿石主微量元素地球化学特征以及黄铁矿微量元素地球化学特征对大尹格庄金矿和夏甸金矿矿化规模和矿化特征的差异具有重要的指示意义。岩矿石主量元素迁移特征显示夏甸金矿矿化过

2、程SiO、FeO，的带入量较尹格庄多，表明夏甸金矿具有较好的硅化、黄铁矿化以及较强的金矿化。岩矿石微量元素迁移特征显示大尹格庄金矿成矿过程中cu、Pb、zn带入量以及CaO、MgO带入量较夏甸金矿少，表明大尹格庄金矿成矿期活动较弱，携带成矿物质较少。黄铁矿微量元素LA—ICP—MS测试分析显示夏甸金矿黄铁矿Cu+Pb+Zn、Ga+In+Cd+T1、As含量较大尹格庄金矿多，反映夏甸金矿热液活动性较强，金矿化较好。夏甸金矿从围岩到矿体SiO、FeO，含量变化幅度较大以及不同成矿阶段黄铁矿中微量元素C

3、u+Pb+Zn、Ga+In+Cd+Tl、As变化幅度较大，显示矿化不太稳定，矿化规模较大尹格庄金矿小的特征。关键词：元素地球化学；大尹格庄金矿；夏甸金矿；金矿矿化；胶东中图分类号：P618．51文章编号：1007．2802(2015)O1．0191．10doi：10．3969／j．issn．1007．2802．2015．01．022AComparisonStudyonMineralizationCharacteristicsinDayingezhuangandXiadianGoldDeposits

4、，EasternShangdongProvinceMAWei—dong，ZHANGDe-xian，WANGZhi—ling，LUAn-huai，CUIYu，ZUOHong·yanKeyLaboratoryofNonferrousMetalMetallogenicPrediction，MinistryofEducation，SchoolofGeoscienceandInfo—Physics，CentralSouthUniversity，Changsha410083，ChinaAbstract：The

5、chemicalcompositionsofrock，oreandpyriteareofgreatsignificanceindeterminingthemineralizationdifferencebetweentheDayingezhuangandtheXiadiangolddeposits．ThecontentsofSiO2andFe2O3involvedinthemetal—lizationprocessintheXiadiangolddepositarehigherthanintheD

6、ayingezhuanggolddepositindicatedthatpyritization，silicificationandgoldmineralizationprocesseswerebetterdevelopedintheXiadiandeposit．ThecontentsofCu，Pb，Zn，CaOandMgOintheDayingezhuanggolddepositarerelativelylowindicatedthatthegoldmineralizationintensity

7、inthisdepositislowandthetrappedamountsofore—formingelementsduringthegoldmineralizationaresmal1．Thesmallervaria-tionofconcentrationofSiO2、Fe2O3fromwalkrocktoorebodyandtraceelementconcentrationofdifferentmineralizationstageofpyriteshowsthattheDayingezhu

8、anggolddepositownsstablemineralization，andislargerinsizecomparedwiththeXiadiangolddeposit．ThegeneralcharacterofthequantityofchemicalcompositionmigrationshowsthattheXiadiangolddepositownsamoreintenseauriferousmineralizationbutsmallergeologicalr