辽阳鸡爪金矿床元素组合规律

鸡爪金矿主要金矿脉赋存在近东西向的褶皱轴部的挤压破碎带中,容矿岩石为大石桥组二段矽线黑云片岩、二云片岩,围岩蚀变为硅化、钾长石化、黄铁矿化。通过57个矿床原生晕样品部分微量元素相关分析、R型聚类分析和正交因子、斜交因子分析,表明Au、Cu、Ag组合为主要矿化阶段的元素组合,是化探找矿的重要指示元素。

ELEMENT ASSOCIATION LAW OF JIZHAO GOLD DEPOSIT, LIAOYANG

The major auriferous veins of Jizhao gold deposit occur in the compressive break belt of aft EW-extending fold axis.The host rocks are sillimanite biothe-schist and dimicaceous schist of the second Member,Dashiqiao Formation.The wall rock alteration is silicification, potash feldspathization and pyritezation. Analyses of the correlation,R-type cluster, orthogonal and oblique factors on some trace elements from 57 samples with primary halo show that the Au,Cu, Ag came into the same ore-bearing hydrothermal process.They are the element association in the major mineralization period.So it is necessary to pay more attention to the element association on the surface or in the shallow part of the crust to search for gold deposit.