豫南地区老湾金银成矿系统矿床地球化学模型探讨

摘要

Laowan Au-Ag deposit is located in the transition site between North and Middle Qinling tectonic belt, yet a case of tectonic-magmatic-fluid coupling metallogeny.Au,As,Sb have higher geochemical background.Based on the research results of rock, microelements of ore body, characteristics of rare earth elements and geochemical features in typical deposits, the mineral and geochemical model of Laowan Au-Ag metallogenic system has been set up.%老湾金银矿位于北秦岭-中秦岭构造带交接部位,是构造-岩浆-流体耦合成矿实例.Au、As、Sb为高背景地球化学特征,结合岩石、矿石的微量元素、稀土元素特征研究,以及典型矿床地球化学特征研究,建立了老湾金银成矿系统矿床地球化学模型.