摘要
达达肯乌拉山铅锌矿床位于柴北缘成矿带南部,是近年来在泥盆系牦牛山组陆相火山岩中新发现的矿床。笔者对矿区00勘探线上3个钻孔岩心样数据,运用格里戈良原生晕分带指数法和构造叠加晕找盲矿法研究了原生晕特征。研究表明,Mo、Cu是铅锌矿体前晕,Sb是近矿晕,Au、As、Ag是矿尾晕;垂向分带序列由下向上为Ag→As→Au→Pb→Zn→Sb→Cu→Mo,序列具反向分带特征,铅锌成矿成晕是多次叠加的结果;矿(化)体轴向深部有前、尾晕叠加共存的重要信息,推测存在隐伏矿体。综上建立了该矿床深部找矿预测的成矿成晕模型。
The Dadakenwulashan lead-zinc deposit is located in the southern part of the northern margin of the Qaidam Basin, which is a newly discovered deposit in the Devonian volcanic rocks of the Yushan Mountains. In this paper, the characteristics of the primary halo about three drilling holes have been studied by using the Grignelon halo zone index method and the tectonic super- imposed halo prospecting method. The results show that Mo and Cu are the front halo of the lead- zinc orehodies, and Sb is the near-ore halo, Au, As and Ag are tail halo. The vertical zonation se- quence is Ag → As → Au → Pb → Zn→ Sb → Cu → Mo from the bottom up, this sequence has the characteristics of reverse zonation, and lead and zinc mineralization is the result of multiple superposition. The coexistence and superimposition of the front and tail halos suggest that the hidden ore body ore body is existed in the depth. Thus, the metallogenic halo model of deep ore prospecting is established in this paper.
作者
刘玉军
刘彩乐
任智斌
贾妍慧
张昆宏
LIU Yujun, LIU Caile, REN Zhibin, JIA Yanhui, ZHANG Kunhong(Qinghai No. 5 Geological Mineral Exploration Instiute, Xining 810099, Qinghai, Chin)
出处
《西北地质》
CAS
CSCD
北大核心
2018年第1期238-246,共9页
Northwestern Geology
基金
青海省重大科技专项项目"柴达木盆地南北缘成矿系统与勘查开发示范--柴达木盆地南缘物化探关键技术方法的应用示范研究"(2016-SF-A3)资助
关键词
原生晕
深部找矿预测
牦牛山组火山岩
达达肯乌拉山铅锌矿床
青海
primary halo
deep prospecting prediction
igneous rock of Maoniushan Formation
Dadakenwulashan lead-zinc deposit
Qinghai
