摘要
镰子沟金矿床分布于小秦岭太华群上部岩层内,矿体受断裂破碎带控制。基于构造叠加晕成矿理论,对含矿构造带内Ⅲ-1矿体进行了系统的原生晕研究。研究表明,矿床异常指示元素组合为Au、Ag、Mo、W、Pb、Sb、As、Ba、Cu、Co;矿体前缘晕指示元素为Hg、As、Sb、Ba,近矿晕为Ag、Au、Cu、Pb、Co,尾晕为Mo、W、Bi、Mn;原生晕轴向分带及特征参数显示出反分带特征,指示矿体在深部有很大延伸或有盲矿存在。根据以上分析,笔者建立了矿床构造叠加晕模型和预测标志,提出了下一步找矿靶位。
The Lianzigou gold deposit is located in Xiaoqinling area and hosted in the upper strata of Taihua group. The orebodies are controlled by fault fracture zone. Based on the theory of structure superimposed halos, the representative No Ⅲ1 orebody of this deposit has been selected to study its structure primary halos in this paper. The results have shown that the optimal indicator elements are Au, Ag, Mo, W, Pb, Sb, As, Ba, Cu and Co. The indicator elements for the head halo of orebody are Hg, As, Sb, Ba, the near halo elements are Ag, Au, Cu, Pb, Co, and the tailing halo elements are Mo, W, Bi, Mn. This axial zoning sequence and the geochemical parameters of structure superimposed halos show a “anti zoning” sequence, which indicates the probability of better spread of the orebody and the existence of concealed orebody. According to the characteristics of primary halos, the model of structure superimposed halos and predicting indexes have been established,and then blind ore prospecting targets for the next working has been took out.
出处
《西北地质》
CAS
CSCD
2017年第4期166-175,共10页
Northwestern Geology
基金
西北有色地质矿业集团"金堆城外围金钼矿床成矿与找矿预测"博士后项目资助(西色地发[2016]46号)
关键词
金矿床
构造叠加晕
轴向分带序列
深部预测
镰子沟
gold deposit
structural superimposed halos
axial zoning sequence
deep prediction
Lianzigou
作者简介
代军治（1978-）,男,博士后,高级工程师,主要从事金属矿产资源勘查研究和技术管理.E-mail：diuizhi@163.com
