胶东焦家金矿床钾长石成因及成矿意义  

Origin and Metallogenic Significance of K-feldspar in Jiaojia Gold Deposit in Jiaodong Area

作　　者：覃祚焕 魏超[1] 梁文飞 张良[1] 

机构地区：[1]中国地质大学地球科学与资源学院,北京100083

出　　处：《山东国土资源》2014年第4期36-40,共5页Shandong Land and Resources

基　　金：国家大学生创新性实验计划项目

摘　　要：焦家金矿属于蚀变岩型金矿,围岩蚀变发育,是我国储量最大的金矿床之一。该文对蚀变带中的钾长石的赋存状态、化学成分进行了分析研究,并与未蚀变的玲珑岩体中的钾长石进行对比。认为焦家金矿床主要存在三种成因类型的钾长石,即原生钾长石(岩浆成因)、高温热液钾长石、低温热液钾长石。结合前人的研究成果,探讨了热液钾长石的形成与成矿意义。Jiaojia gold deposit belongs to altered rock type gold deposit,which has extensive wall rock al-teration.It is one of the biggest gold deposit in reserves.Occurrence and chemical composition of the K feldspar in the alteration rock have been analyzed and studied,and compared with the K feldspar in the non alterated Linglong rock bodies.Three genetic types of K feldspar occurred in Jiaojia gold deposit, including native K feldspar （magmatic origin）,hydrothermal K feldspar of high temperature and hydro-thermal K feldspar of low temperature.Finally,combining with previous research,the formation and its mineralization significance of the hydrothermal K feldspar have been discussed.

关 键 词：围岩蚀变 热液钾长石 成矿意义 焦家金矿 胶东地区 

分 类 号：P618.51[天文地球—矿床学]