华县百花岭金银多金属矿床地质特征及成因分析

Geological Characteristics and Genesis Analysis of Baihualing Au-Ag Polymetallic Deposit in Hua County

华县百花岭金银多金属矿床位于华北板块南缘豫西断隆西段金堆城坳陷区,受区内青岗平大断裂的次级构造控制,赋矿地层为中元古界蓟县系官道口群高山河组,局部为中元古界长城系熊耳群,燕山期岩浆热液作用明显。文章通过阐述华县百花岭金银多金属矿床成矿地质背景、矿床地质特征,分析成岩成矿环境及矿床成因,认为百花岭金银多金属矿床是与金堆城含矿斑岩体有关的浅成低温热液型矿床。

The geotectonic structure of the Baihualing Au-Ag polymetallic deposit located in the Jindui depression of the western part of the Yuxi ridges which is in the southern margin of the North China plate, controlled by the secondaary structure of Qinggang Ping fault. The ore bearing strata are Gaoshanhe formation （Pt2g） of the Middle Proterozoic Jixian system, and part of the formation are Xionger formation （Pt2xl） of the Middle Proterozoic Changcheng system. The effect of magmatic hydrothermal fluid in Yanshan period is obvious. This paper expounds the metallogenic tectonic background, geological characteristics and geochemical characteristics of Baihualing Au-Ag polymetallic deposit in Hua county. By analyzing the diagenetic and metallogenic environment and the genesis of the deposit,it is ~lated to the genesis of the adjacent gold deposit and conceived the metallogenic modelpreliminarily. It is believed that Baihualing Au Ag polymetallic deposit is a epithemal deposit related to the gold polymetallic ore bearing porphyry.