太行山北段王安镇矿集区Fe-Cu-Mo多金属矿床S-Pb同位素特征及其意义  

Isotope Characteristics of Lead and Sulfur in Fe-Cu-Mo Polymetallic Deposits,Wanganzhen Ore Concentrated Area,Northern Taihang Mountain,and Its Implication

作　　者：聂飞[1] 董国臣[2] 王霞[3] 朱华平[1] 

机构地区：[1]成都地质矿产研究所,成都610081 [2]中国地质大学(北京),北京100083 [3]山西省地震局,太原030021

出　　处：《矿物岩石地球化学通报》2014年第6期847-853,共7页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：国家自然科学基金重点项目(90914002);重点基础研究发展规划项目(2009CB421002);中国地质调查局研究项目(1212011120608;1212011220907)

摘　　要：太行山北段是华北克拉通重要的多金属矿产地之一,王安镇矿集区是其中较为典型的矿集区。区内矿化类型以矽卡岩型为主,其次为斑岩型和热液脉型,矿床产于王安镇岩体内、岩体与围岩接触带及岩体附近围岩中。为深入了解其成矿规律,探讨成矿物质来源,本文在分析该矿集区成矿地质条件的基础上,对与王安镇岩体有关的典型矿床中的矿石进行了硫、铅同位素研究。结果表明,成矿热液的总硫同位素组成(δ34SΣS)在陨石硫值范围内,硫的来源单一,为深源岩浆硫;矿石铅同位素具有壳幔混合特征,且与岩体铅同位素组成较为一致。说明该矿集区成矿物质来源较深,与岩浆活动关系密切。The Wanganzhen ore district is located in the northern Taihang Mountain of the central North China Craton.In addition to the skarn type of mineralization,porphyry and hydrothermal vein types of mineralizations are also developed in this district.Deposits were produced in the batholith,the contact zone between the batholith and the wall rock and the wall rock.On the basis of knowing geological condition of mineralization,we studied the characteristics of sulfur and lead isotopes in ores of typical deposits and systematically identified sources of oreforming materials.The isotope composition for the total sulfur of the ore-forming hydrothermal solution is within the range of meteorite＇s,indicating a single source from the deep magmatic source,the isotope composition of lead in ore showed a characteristics of the mixed crust-mantle,which is consistent with those of the intrusive rocks.Therefore,we concluded that the ore-forming material sources of the Wang＇ anzhen ore district may originate from the deep Earth and are closely related to magmatic activities.

关 键 词：硫、铅同位素 成矿物质来源 王安镇矿集区 

分 类 号：P618.2[天文地球—矿床学]