西藏阿汝村东铜金矿点地质特征及找矿标志

Characteristics of the Aru village east copper-gold point and prospecting mark in Xizang(Tibet)

阿汝村东铜金矿位于青藏高原班公湖-双湖-怒江-昌宁对接带,成矿区属材玛-多不扎铜银金铁多金属成矿亚带。本文通过总结西藏1/5万日土县北东鲁玛江东南4幅区域地质矿产调查资料,论述了阿汝村东铜金矿的区域地质背景及矿区地质、剪切带特征、韧性剪切带与铜金矿化关系及找矿标志,认为韧性剪切带对区内铜金矿床的成矿具有控制作用,同时韧性剪切带活动过程中伴随的岩浆活动,为铜金成矿提供热动力和成矿物质;韧性剪切带的内糜棱岩是铜金元素富集成矿的有利部位;糜棱岩带和硅化破碎带内聚集铜金矿体,铜、金、褐铁矿化和石英脉有密切关系。

Xizang（Tibet）Aru village east copper-gold point lies in the Bangong lake-Shuang Lake-Nujing river- Changning docking zone in Tibet plateau, belongs to Caima-duobuzha copper silver gold iron polymetallic metallogenic subzone. This paper summarized Tibet 1/50 000 4 regional geological maps and mineral survey data in the Ritu county, and discussed the Aru village east copper-gold point regional geological setting and field geology, shear zone, ductile shear zone and the relationship with the copper and gold mineralization and prospecting signs. We believe that the shear zone has a control action to the region copper-gold deposit mineralization. And the magma activity during the ductile shear zone formation provided the thermal power and metallogenic materials for the copper-gold mineralization. The shear zone mylonite is a copper-gold enrichment mineralization favorable position. The copper-gold bodies, and copper- gold- limonite mineralization aggregating in the mylonite zone and silicified fracture zone are closely related to the quartz veins.