阿尔金大平沟金矿床地质特征及成因初探  

GEOLOGICAL FEATURES AND ORIGIN OF DAPINGOU GOLD DEPOSIT IN ALTUN AREA

作　　者：杨屹[1] 杨风[1] 刘新营[1] 司迁[1] 

机构地区：[1]新疆维吾尔自治区地质矿产勘查开发局第一区域地质调查大队,新疆乌鲁木齐830011

出　　处：《新疆地质》2002年第1期44-48,共5页Xinjiang Geology

基　　金：国土资源大调查项目(199910200248)资助

摘　　要：大平沟金矿处于阿尔金山北坡太古界托格拉格布拉克岩群的NWW向强应变构造带中,矿体主要为石英脉型和含金蚀变岩型,其形态、产状、规模严格受韧脆性剪切带控制.含矿围岩主要为韧脆性变形的闪长质碎粒岩、糜棱岩.与金矿化有关的围岩蚀变主要有黄铁矿化、硅化、钾化等,且随蚀变强度的增强,金含量增高.属中低温变质-岩浆热液复成因型金矿床.Dapingou gold deposit occurs within Togbulak Group of the Archean in a highly deformed structural zone north of Altun northern margin deep fault. The ores are quartz-vein type and gold-bearing altered rock type. Ore bodies are controlled by ductile and brittle shear zones regarding their morphology, occurrence and scales. The ore-bearing formations and country rocks are highly deformed Late Archean dioritic cataclasites and mylonites. Sections of pyritified, silicified, and malachitified rocks are important prospecting marks. The ore minerals are mostly native gold, and pyrite, and the vein minerals are quartz. The deposit is of low to intermediate temperature metamorphism and magmatic hydrothermal origins, controlled by the ductile and brittle shear zone.

关 键 词：阿尔金 韧脆性剪切带 金矿床 地质特征 成因 围岩蚀变 

分 类 号：P618.51[天文地球—矿床学]