地质与勘探2018，Vol.54Issue(2)：264-273,10.
云南郎都铜矿地质特征与矿床成因分析
Geological Characteristics and Ore Genesis of the Langdu Copper Deposit in Yunnan Province
王春林 1孟明亮 2项志磊 3唐顺娟 2凡韬 2王玉鹏 2鲁孝军2
作者信息
- 1. 成都理工大学,四川成都 610059
- 2. 四川省地质矿产勘查开发局四0三地质队,四川峨眉山 614200
- 3. 云南地矿工程勘察集团公司,云南昆明 650200
- 折叠
摘要
Abstract
The Langdu copper deposit is located at the northeast wing of Hongshan duplex anticline in the south section of the Yidun-Zhongdian is-land arc belt. Its ore bodies are hosted in tensile fracture zones,interlayer fracture zones,or at fold turning ends and outer contact belts. Formation of this copper deposit is related to the properties of surrounding rocks, structural fracture zones and the alteration types of host rocks, belonging to the contact metasomatic hydrothermal copper deposits.The rock mass closely related with mineralization is quartz diporphyry.The surrounding rock is limestone of car-bonate rocks.The typical skarn minerals include diopside,followed by garnet,and the ore-bearing potential of diopside skarn is obviously higher than gar-net skarn.According to the isotopic study,the mineralization age of the Langdu copper deposit is 214.8±3.8Ma,which formed in an orogenic environment. Mineralization material is most derived from the lower crust,secondly from the mantle,characterized by the mixing of the crust and mantle and deep and shallow sources.Formation of this copper deposit is the result of the superposition of multi-stage metasomatism with basic features of skarn-type copper de-posits.关键词
郎都铜矿/矽卡岩矿床/地质特征/矿床成因/云南Key words
Langdu copper deposit/skarn deposit/geological characteristics/ore genesis/Yunnan分类
天文与地球科学引用本文复制引用
王春林,孟明亮,项志磊,唐顺娟,凡韬,王玉鹏,鲁孝军..云南郎都铜矿地质特征与矿床成因分析[J].地质与勘探,2018,54(2):264-273,10.
