湖南石坳金矿床地质特征及成因探讨  

Geological characteristics and genesis of the Shiao gold deposit in Hunan province

作　　者：向东 温海亮 万海辉 XIANG Dong;WEN Hai-liang;WAN Hai-hui(Hunan Province Geological Disaster Survey And Monitoring Institute,Changsha 410100,China)

机构地区：[1]湖南省地质灾害调查监测所,湖南长沙410100

出　　处：《世界有色金属》2024年第7期58-60,共3页World Nonferrous Metals

摘　　要：石坳金矿地处湘东北幕阜山-望湘隆起带中部,望湘岩体及金井岩体东北部外接触带上,是我国南方重要的金成矿区域。通过对矿区赋矿地层、含矿构造、矿脉特征、矿石特征以及深部矿化富集规律等分析研究,认为矿区内金矿脉赋存于新元古界冷家溪群坪原组地层中,矿区内NS向、SEE-NWW向断裂构造为容矿构造,矿区内含金矿化以蚀变破碎板岩型及含金石英脉型为主,与金矿化有关的蚀变主要有黄铁矿化、硅化、毒砂化。矿床成因类型为中(低)温热液金矿床。结合最新的勘查成果及成矿规律,预测矿区西部大源岭地区及矿区边深部有较大找矿潜力。Shiao Gold Mine is located in the central part of the Mufu Mountain Wangxiang Uplift in northeastern Hunan,on the outer contact zone of the Wangxiang and Jinjing rock bodies in the northeast.It is an important gold mineralization area in southern China.Through analysis and research on the ore-forming strata,ore bearing structures,vein characteristics,ore characteristics,and deep mineralization enrichment rules in the mining area,it is believed that the gold veins in the mining area occur in the Pingyuan Formation of the Lengjiaxi Group in the Neoproterozoic.The NS and SEE-NWW trending fault structures in the mining area are the ore bearing structures.The gold mineralization in the mining area is mainly characterized by altered and fractured slate types and gold bearing quartz vein types.The main alterations related to gold mineralization include pyrite mineralization,silicification,and arsenopyritization.The genetic type of the deposit is a medium(low)temperature hydrothermal gold deposit.Based on the latest exploration results and ore-forming laws,it is predicted that there is significant potential for mineral exploration in the western Dayuanling area and deep edges of the mining area.

关 键 词：石坳金矿 湘东北 容矿构造 矿床成因 冷家溪群 

分 类 号：P622.1[天文地球—地质矿产勘探]