引用格式：唐卫东，何佳乐，刘天航，等，2023.内蒙古北山老硐沟金矿石榴子石地球化学特征[J].地质力学学报，29（1）：60−75.DOI：10.12090/j.issn.1006-6616.2022098Citation:TANGWD，HEJL，LIUTH，etal.，2023.GeochemicalcharacteristicsofthegarnetsfromtheLaodonggougolddeposit,Beishan,InnerMongolia[J].JournalofGeomechanics，29（1）：60−75.DOI：10.12090/j.issn.1006-6616.2022098内蒙古北山老硐沟金矿石榴子石地球化学特征唐卫东1，何佳乐1，刘天航1，魏立勇1，范堡程1,2，赵福东1，何毅3，郭永超3，杨冰3TANGWeidong1，HEJiale1，LIUTianhang1，WEILiyong1，FANBaocheng1,2，ZHAOFudong1，HEYi3，GUOYongchao3，YANGBing31.中国地质调查局西安矿产资源调查中心，陕西西安710000；2.中国地质调查局西安地质调查中心，陕西西安710000；3.额济纳旗圆通矿业有限责任公司，内蒙古阿拉善盟7503001.Xi’anCenterofMineralResourcesSurvey,ChinaGeologicalSurvey,Xi’an710000,Shaanxi,China;2.Xi’anInstituteofGeologyandMineralResources,ChinaGeologicalSurvey,Xi’an710000,Shaanxi,China;3.Eji’naYuantongMiningCompany,Alashan750300,InnerMongolia,ChinaGeochemicalcharacteristicsofthegarnetsfromtheLaodonggougolddeposit,Beishan,InnerMongoliaAbstract:TheLaodonggougolddepositisamedium-sizedgolddepositdiscoveredintheeasternsectionoftheBeishanmetallogenicbelt.Itresultedfromthesuperpositionofmulti-phaseandmulti-stagemetallogenesis.Duetoitscomplexdepositgenesis,thedeposithasfivesections,ofwhichskarnorebodiesdominateSectionIII.Skarnmineralsaremainlygarnet,whichcanbedividedintoearlyandlatephases,withearlygarnethavingmoreoscillatoryringbands.Wesystematicallystudiedthetwotypesofgarnetbydetailedmicroscopicobservationandelectronmicroprobe.Thecoreoftheearlygarnetprimarilyconsistsofessonites,andtheedgeiscalcium–irontocalcium–aluminumcomposition.Andraditesdominatethelategarnet.Thechemicalcompositionofgarnetindicatesthattheearlyskarnizationstageisunderamoderatelyacidicandweaklyoxidizing–to–weaklyreducinghydrothermalenvironment,whiletheironcontentincreasesinthelaterstageandtheoxygenescapeincreases,resultinginincreasedalkalinityandoxidation.Thegarnets...
