四川甘孜-理塘断裂带中段阿加隆洼金矿围岩蚀变特征及与金矿化关系  

WALLROCK ALTERATION AND RELATION WITH GOLD MINERALIZATION OF AJIALONGWA GOLD DEPOSIT IN THE CENTRAL GANZI-LITANG FAULT ZONE,SICHUAN

作　　者：肖军[1] 孙传敏[1] 刘严松[1] 马子宁[2] 杨弘忠 周庆磊[1] 孙遥[1] 

机构地区：[1]成都理工大学地球科学学院,成都610051 [2]四川省地质矿产勘查开发局应用地球物理研究所,西昌615000 [3]重庆市地质勘查局川东南地质队,重庆400038

出　　处：《地质与勘探》2008年第6期8-12,共5页Geology and Exploration

基　　金：四川省杰出青年学科带头人培养计划项目(编号:06ZQ026-014)资助

摘　　要：阿加隆洼金矿是近年来在甘孜—理塘断裂带发现的一个中型低温热液型金矿床。区内围岩蚀变发育广泛,具多期次,蚀变类型主要有硅化、碳酸盐化、黄铁矿化、毒砂化、绿泥石化等。文章在介绍阿加隆洼金矿床区域地质背景、矿床特征、矿体地质特征的基础上,着重对矿床的围岩蚀变特征进行了较为深入地论述,并分析了该矿床的成矿地质条件。认为矿化蚀变岩带与金矿化关系密切,尤其与硅化、碳酸岩化、黄铁矿化最为密切,并且含矿热液在迁移过程中,与围岩发生的流体-岩石反应,造成金的沉淀、富集,最终形成金矿床。Ajialongwa gold deposit, discovered in the Ganzi-Litang fault zone, is a middle scale epithermal gold deposits. Wallrock alterations are distributed widely in the area. Wallrock alterations include silicification, pyritization, carbonation and arsenopyritezation, and chloritization. Based on re- gional geological setting, deposit characteristics, geologic features of deposit, wallreok alterations and ore-forming geological conditions are summed up. It is considered that alterations zones, particularly silieification, carbonation, pyritization, have a close relation with Au mineralization. During fluid-reck interaction, ore forming components were not equally mobile, resulting Au precipitation, enrichment, and formation of gold ore bodies.

关 键 词：围岩蚀变 金矿化 阿加隆洼金矿 矿床成因 

分 类 号：P618.51[天文地球—矿床学]