胶东水旺庄超大型金矿床构造叠加晕特征及深部找矿预测

Characteristics of Tectonic Superimposed Halo and Deep Prospecting Predication in Shuiwangzhuang Superlarge Gold Deposit in Jiaodong Area

摘要:

胶东是我国最重要的金成矿区，水旺庄金矿床是招平断裂带上近年来探获最大的深部特大型金矿床，首次采用构造叠加晕方法开展深部成矿预测意义重大。本文通过收集整理前人地质资料，结合野外地质调查工作，对水旺庄金矿床开展钻孔化探数据测试分析。研究表明:矿体中共同元素组合是：Au、As、Sb、Ag、Cu、Pb、Zn、Bi、W；特征元素组合是：As、Ag、Cu，其中Au为主要成矿元素，Cu为主要的伴生元素。以26勘探线为主要研究对象，运用构造叠加晕理论分析可知前缘晕特征指示元素为As、Sb、Hg；近矿晕特征指示元素为Au、Ag、Cu、Pb、Zn；尾晕特征指示元素为Bi、Mo、W。建立了水旺庄金矿床构造叠加晕理想模式，进行了深部矿体预测圈定预测靶区3个。

Abstract:

Jiaodong area is the most important gold metallogenic area in China. Shuiwangzhuang gold deposit is the largest deep superlarge gold deposit discovered in Zhaoping fault zone in recent years. It is of great significance to use structural superimposed halo method for deep metallogenic predication for the first time. In this paper, through the collection and collation of previous geological data, combining with the field geological survey, the borehole geochemical data test of Shuiwangzhuang gold deposit has been carried out. It is showed that the common element assemblage in the ore body is Au, As, Sb, Ag, Cu, Pb, Zn, Bi, W, and the characteristic element assemblages are As, Ag and Cu, in which Au is the main oreforming element and Cu is the main associated element. Taking the 26 exploration line as the main research object, the analysis of structural superimposed halo theory shows that the leading edge halo characteristic indicator elements are As, Sb, Hg; near ore halo characteristic indicator elements are Au, Ag, Cu, Pb, Zn; tail halo characteristic indicator elements are Bi, Mo, W. The ideal model of structural superimposed halo in Shuiwangzhuang gold deposit has been established, and three predication targets of deep ore bodies have been predicated.