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滇西北雪鸡坪斑岩型铜矿构造特征与成矿作用研究
引用本文:刘学龙,杨富成,张昌振,罗应,王帅帅.滇西北雪鸡坪斑岩型铜矿构造特征与成矿作用研究[J].黄金科学技术,2018,26(4):473-480.
作者姓名:刘学龙  杨富成  张昌振  罗应  王帅帅
作者单位:1.昆明理工大学国土资源工程学院,云南 昆明 650093
基金项目:云南省科学技术奖—杰出贡献奖项目“西南三江复合成矿作用疑难问题研究”(2017001);昆明理工大学重点学科建设经费项目“地质资源与地质工程(省级一流学科)”(1407839305);国家自然科学基金项目“云南格咱岛弧印支期斑岩型铜矿床变化与保存研究”(41502076);云南省科技领军人才计划项目“复合成矿作用典型矿床研究”(2013HA001)
摘    要:滇西北雪鸡坪斑岩铜矿床位于义敦—中甸岛弧带的南段,属区内印支期斑岩成岩成矿作用的典型矿床之一。对雪鸡坪铜矿床控矿构造特征进行了系统梳理与分析研究,结果表明矿体的产出形态受NW-NNW向断裂及褶皱的严格控制,矿体形成与印支期构造—岩浆活动关系密切。含矿斑岩中节理(裂隙)较为发育,并发育有大量的黄铁矿±黄铜矿+石英脉体充填,黄铁矿和黄铜矿等金属硫化物主要沿节理(裂隙)发育形成大量的细脉、细网脉体,黄铁矿化的发育强度与岩体中裂隙的发育程度密切相关。另外,对雪鸡坪铜矿区灰岩地层的有效圈定表明,灰岩与石英闪长玢岩呈侵入接触关系,加之区内广泛的岩浆热液活动,具备矽卡岩矿体形成的基本条件,为该区下一步找矿勘查工作提供了科学依据。

关 键 词:斑岩铜矿  构造特征  节理(裂隙)  成矿作用  找矿方向  印支期  雪鸡坪  滇西北  
收稿时间:2018-04-26
修稿时间:2018-07-10

Structural Characteristics and Mineralization of Xuejiping Porphyry Copper Deposit in Northwest Yunnan
Xuelong LIU,Fucheng YANG,Changzhen ZHANG,Ying LUO,Shuaishuai WANG.Structural Characteristics and Mineralization of Xuejiping Porphyry Copper Deposit in Northwest Yunnan[J].Gold Science and Technololgy,2018,26(4):473-480.
Authors:Xuelong LIU  Fucheng YANG  Changzhen ZHANG  Ying LUO  Shuaishuai WANG
Affiliation:1.Facculty of Land and Resource Engineering,Kunming University of Science and Technology,Kunming 650093,Yunnan,China
Abstract:Xuejiping copper deposit is located in the southern part of Yidun-Zhongdian arc belt,which is a typical deposit of porphyry mineralization in the Indosinian period.The ore-control structural characteristics of Xuejiping copper deposit was systematically analyzed,which shown the orebody’s outputting is strictly controlled by the NW-NNW fracture and fold structure and the formation of ore is closely related to the Indosinian tectonic-magmatic activities.The joints (fissure) are more developed and have a lot of pyrite± chalcopyrite+quartz vein filling in ore-bearing porphyry.Metal sulfides such as pyrite and chalcopyrite are mainly filled along the joint (fissure) to form a large number of metal sulfide veins and fine veins,which shown that there is a close relationship between the developmental intensity of pyrite and the development of cracks in the rock mass.In addition,the effective delineation of limestone strata in Xuejiping mine area indicates that intrusive contact between limestone and quartz diorite porphyrite.Coupled with the extensive magmatic hydrothermal activity in the region,it should be believed that the basic conditions of skarn orebody formed,the results and provide a scientific basis for the mineral exploration.
Keywords:porphyry copper deposit  structural characteristics  joint(fissure)  mineralization  prospecting direction  Late Triassic  Xuejiping  Northwest Yunnan  
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