新疆若羌县三峰山铜矿区地质特征及矿床成因初探

三峰山铜矿区位于新疆若羌县罗布泊以东80km处,处于南天山成矿有利地带,其地质、构造特征较为复杂,有较好的成矿条件和较大的成矿潜力,矿体与安山质凝灰岩及构造关系密切,是良好的找矿标志。通过论述矿区地质特征,总结矿床成因及控矿因素,证实该区矿床多位于安山质凝灰岩与含碳绿泥片岩、千枚岩接触带上,受后期构造及热液作用使成矿元素得到充分运移和富集,并于构造有利部位富集成矿。

Primary Analysis on Geological Characteristics and Origin of Sanfengshan Copper Deposit in Ruojiang County of Xinjiang Uygur Autonomous Region

Sanfengshan copper deposit locates in 80 km east of Ruoqiang county in Lop nur in Xinjiang Uygur Autonomous Region, and locates in favorable belts of south Tianshan metallogenic zones. Geological and tectonic features are more complex with good metallogenic conditions and larger metallogenic potentiality. Ore bodies have close relation with andesitic tuff and structures. They are a good prospecting marks. Through studying geological characteristics, summarizing the origins of deposits and orecontrolling factors, it is confirmed that deposits in this area are located in contacting belts of andesitic tuff and carbon chlorite schist and phyllite. Through tectonic and hydrothermal process in late period, oreforming elements have been migrated and enriched completely, and concentrated in favorable oreforming belts.