岩矿测试2017，Vol.36Issue(4)：420-429,10.DOI:10.15898/j.cnki.11-2131/td.201609010133
粤东新寮岽铜多金属矿区钻孔深部矿体铜同位素研究
Copper Isotope Studies of a Deep Ore Body in the Xinliaodong Copper-Polymetallic Deposit, Eastern Guangdong Province
摘要
Abstract
The Xinliaodong copper-polymetallic deposit of Eastern Guangdong Province is one of newly discovered deposits.The ore district belongs to tin, tungsten, and copper ore cluster in the southeast coast , which have a very good ore-forming geological conditions.Chalcopyrite has δ65Cu value ranging from-0.34‰ to +1.37‰, which is consistent with δ65Cu value of porphyry deposits, indicating that ore-forming material Cu was derived from deep magma and ore-forming fluids were medium-high-temperature (250-420℃) magmatic-hydrothermal fluids.There is a close relationship between the fractionation of Cu isotope and magmatic hydrothermal activity.The formation of ore body is related to the dissolution of ore-forming fluids.With the increase of depth, there is atrend of increasing δ65Cu value, indicating a potential of a largee orebody.Copper isotope can directly indicate the location of the heat source.The δ65Cu values are below 0 for copper ore bodies close to the hydrothermal quartz veins.But the copper isotope values are higher in the hydrothermal contact zone, special ore-bearing surrounding rock and tectonic zone where indicates the edge or the front of the main ore body, most obvious ore prospecting mark.关键词
铜同位素/粤东/新寮岽铜多金属矿区/铜矿体/岩浆Key words
copper isotope/Eastern Guangdong Province/Xinliaodong copper-polymetallic ore district/copper orebody/magma分类
化学化工引用本文复制引用
范飞鹏,肖惠良,陈乐柱,李海立,刘建雄,邓中林,李少斌,林梗伟,周霞..粤东新寮岽铜多金属矿区钻孔深部矿体铜同位素研究[J].岩矿测试,2017,36(4):420-429,10.基金项目
中国地质调查局广东厚婆坳铜锡多金属矿整装勘查区专项填图与技术应用示范之找矿预测模型构建与找矿预测研究专题(12120114015701) （12120114015701）
武夷山成矿带龙泉-上杭地区地质矿产调查(DD20160037) （DD20160037）
