DOI：10.12401/j.nwg.2023105湖南水口山老鸦巢金矿床地质特征及成因分析郭闯，卢玉杰，欧阳志强，史国伟（湖南省遥感地质调查监测所，湖南长沙410015）摘要：老鸦巢金矿床位于衡阳盆地南缘，水口山铅锌金银矿田的中部，属于隐爆角砾岩型金矿床。金矿体主要赋存于隐爆角砾岩系统及接触破碎带中，受构造、岩浆岩及地层联合控制。笔者基于金矿床的区域地质背景、矿床地质特征、微量元素特征、S−Pb−O同位素特征、成矿温压及盐度特征，以矿体特征、矿石特征、围岩蚀变和自然金成色特征为基础，结合分析成矿地质条件，厘定矿床成因类型为隐爆−中低温热液复成因金矿床。关键词：水口山；老鸦巢金矿床；矿床地质特征；成因类型；隐爆角砾岩型中图分类号：P611.13文献标志码：A文章编号：1009-6248（2023）05-0294-14GeologicalCharacteristicsandGeneticAnalysisofLaoyachaoGoldDepositinShuikoushan,HunanProvinceGUOChuang，LUYujie，OUYANGZhiqiang，SHIGuowei（HunanProvincialRemoteSensingGeologicalSurveyandMonitoringInstitute,Changsha410015,Hunan,China）Abstract：LaoyachaogolddepositislocatedinthesouthmarginofHengyangbasinandthemiddlepartofShuikoushanlead−zincgolddeposit.Goldorebodiesmainlyoccurincryptoexplosivebrecciasystemandcon-tactfracturezone,whicharecontrolledbystructure,magmaticrockandstratum.Basedontheregionalgeologi-calbackgroundofgolddeposits,oredepositgeologicalfeatures,traceelements,S−Pb−Oisotopecharacteristics,metallogenictemperature,pressureandsalinitycharacteristics,orebodycharacteristics,orecharacteristics,char-acteristicsofwallrockalterationandassayingthefinenessofnativegold,asthebasis,combiningwiththeanal-ysisofore−forminggeologicalconditions,depositgenetictypeisdeterminedascryptoexplosion−liquidcom-poundgenesisofgolddeposits(mediumtolowtemperature).Keywords：Shuikoushan；Laoyachaogolddeposit；geologicalcharacteristicsoforedeposits；genetictype；cryptoexplosivebrecciatype隐爆角砾岩型金矿是重要的金矿类型之一，国内外相继发现了一大批与隐爆角砾岩有关的代表性金矿床，如美国的朗德山金矿、克里普−克里克金矿、澳大利亚的基兹顿金多金属矿床和奥林匹克坝银−金−铀−铜矿床等超大型矿床以及中国的河南祁雨沟金矿、新疆阿希金矿、山东...
