山东五莲七宝山长老庄隐爆角砾岩特征及其找矿指示  

Characteristics of Zhanglaozhuang cryptoexplosive breccia in Qibaoshan area,Wulian,Shandong Province and its prospecting instructions

作　　者：黄鹂 闫伟 李双飞 张超 HUANG Li;YAN Wei;LI Shuangfei;ZHANG Chao(No.8 Institute of Geology and Mineral Resources,Rizhao 276826,Shandong,China;Sinotech Minerals Exploration Co.,Lad.,Baijing 100012,China)

机构地区：[1]山东省第八地质矿产勘查院,山东日照276826 [2]中色地科矿产勘查股份有限公司,北京100012

出　　处：《矿产勘查》2020年第8期1630-1635,共6页Mineral Exploration

基　　金：中国地质调查局项目(编号:DD20160052)资助。

摘　　要：隐爆角砾岩是火山活动中,在地表封闭条件下发生剧烈爆炸所形成的碎屑岩建造,具有良好的热液成矿通道。五莲七宝山地区火山活动频繁,发育多期次火山杂岩体,形成七宝山火山机构。通过本次工作,在七宝山火山机构的南部,新发现长老庄隐爆角砾岩带,发现铜铅矿体1个,矿体呈脉状赋存在隐爆角砾岩带中,赋矿岩石为碳酸盐化、硅化、金属矿化隐爆角砾岩,矿体厚3 m,铜品位0.272%~0.823%,平均品位0.45%;铅品位0.240%~2.872%,平均品位为0.45%。通过对隐爆角砾岩带的地质特征综合分析,沿含矿角砾岩筒的通道相有可能追索到深部的斑岩型矿化。Cryptoexplosive breccia is a clastic formation by violent explosion in the case of surface enclosure during volcanic activity,which has a good Metallogenic channel of hydrothermal.The volcanic activity in the Qibaoshan area of Wulian is frequent,and multi-stages subvolcanic rocks develops here.In this study,Zhanglaozhuang cryptoexplosive breccia belt has been found in the south of the qibaoshan volcano agency.Through the comprehensive analysis of the geological characteristics of the cryptoexplosive breccia belt,it is of certain guiding significance for the next prospecting work.

关 键 词：铜铅矿 隐爆角砾岩 五莲七宝山 矿化特征 山东 

分 类 号：P618.41[天文地球—矿床学]