摘要
区域上首次在康布铁堡组上亚组第三岩性段发现了有价值的铅锌矿体,是阿勒泰陆缘活动带晚古生代层控火山成因铅锌铜多金属找矿的新层位,具有重要的理论和实践意义。二道沟铅锌矿目前共发现四条矿(化)体,矿体赋存于第三岩性段的大理岩带中,成矿物质来源于第三岩性段酸性火山岩,围岩蚀变主要有硅化、褐铁矿化、矽卡岩化,成因为热液叠加火山气液喷流型铅锌矿床。综合成矿地质条件、矿化蚀变带和已发现的矿体特征,以及物化探异常显示,表明该区有很好的找矿前景。
For the first time,valuable pb-Zn ore bodies were discovered in the third lithological member of the upper subgroup of the Combe Tieburg formation,which is a new bed for the late Paleozoic stratovolcanic-induced pB-ZN-CU polymetallic prospecting in the aletai continental margin active belt.It has important theoretical and practical significance.At present,four orebodies have been found in Erdaokou pb-Zn deposit,which are located in the marble belt of the third lithologic section.The ore-forming materials come from the acid volcanic rocks of the third lithologic section.The alteration of surrounding rocks mainly includes silicification,limonite and Skarn,and the formation is caused by hydrothermal superposition of volcanic gas-liquid jet pB-Zn deposit.Combined with the ore-forming geological conditions,mineralized alteration zone and orebody characteristics,as well as the geophysical and geochemical anomalies,it shows that the area has a good prospect for prospecting pb-Zn ore.
作者
袁建江
YUAN Jian-jiang(Exploration and Research Institute,China National Administration of Coal Geology,Beijing,100039)
出处
《世界有色金属》
2020年第14期95-99,共5页
World Nonferrous Metals
关键词
阿勒泰
二道沟
铅锌矿
成矿条件
找矿前景
Altay
Erdaogou
Lead-zinc mine
Metallogenic condition
Prospecting prospect
