云南鹤庆县北衙铁金矿红泥塘矿段地质特征及控矿因素研究

The geological characteristics and ore control factors of Hongnitang section of Beiya Iron Gold Mine,Heqing County,Yunnan Province

北衙铁金矿是多成因类型的铁多金属矿床,矿床成因与喜马拉雅期碱性斑岩体密切相关。文章重点研究了北衙铁金矿红泥塘矿段的地质特征,认为该矿床的成矿与石英正长斑岩密切相关,为喜马拉雅期富碱斑岩成矿体系的演化过程,矿体主要分布在碱性斑岩体与围岩形成的接触破碎带、层间滑动破碎带以及硅钙面等部位,因此岩浆岩因素、构造因素和地层因素是矿区主要的控矿构造。

Beiya iron gold deposit is a multi-genesis type of iron polymetallic deposit,and the origin of the deposit is closely related to the basic porphyry body of the Himalayan period.This paper focuses on the geological characteristics of the Red Nitang section of the Beiya Iron Gold Mine,and concludes that the mineralization of the deposit is closely related to quartz syenan porphyry,which is the evolution process of alkali-rich porphyry mineralization system in the Himalayan period,and the ore body is mainly distributed in the contact fracture zone,interlayer sliding fracture zone and silica-calcium surface formed by alkaline porphyry body and surrounding rock,so magmatic rock factors,tectonic factors and stratigraphic factors are the main ore control structures in the mining area.