摘要
南坡铜矿位于兰坪—思茅裂陷盆地的普洱—思茅—勐腊中轴断裂带南部。为进一步查明矿床成矿规律,指导下一步找矿工作,在野外勘探工作的基础上,结合室内综合分析,对南坡铜矿地质特征进行了详细研究,并与传统沉积型砂岩铜矿进行对比分析。研究结果表明:南坡铜矿在矿体空间形态、矿石矿物组合及围岩蚀变等方面具有典型的层控型矿床特征,也有后期热液叠加、富化特征,具有沉积成岩、富集成矿的发育特征。综合区域构造演化、矿床地质特征和成矿机理分析,认为南坡铜矿属典型的沉积—成岩型铜矿床。通过对南坡铜矿成矿模式的厘定,提出地层岩性、古地理、构造等为有利的找矿标志,为区内探寻类似矿床的找矿提供工作思路,拓宽了区域找矿前景。
The Nanpo Copper Mine is located in the southern part of the Pu'er-Simao-Mengla cen⁃tral axis fault zone in the Lanping-Simao Rift Basin.In order to further identify the metallogenic regularity of the deposit and guide the next prospecting work,on the basis of field exploration work,combined with indoor comprehensive analysis,the geological characteristics of Nanpo copper deposit are studied in detail,and compared with the traditional sedimentary sandstone copper deposit.The results show that the Nanpo copper deposit has typical stratabound deposit characteristics in terms of ore body spatial form,ore mineral assemblage and wall rock alteration.It also has the characteristics of late hydrothermal superposition and enrichment,and has the development characteristics of sedimentary diagenesis and enrichment mineraliza⁃tion.Comprehensive analysis of regional tectonic evolution,deposit geological characteristics and metallo⁃genic mechanism,it is believed that the Nanpo copper deposit is a typical sedimentary-diagenetic copper deposit.Through the determination of the metallogenic model of the Nanpo copper deposit,stratigraphic li⁃thology,palaeogeography,structure,etc.are proposed as favorable prospecting signs,which provide working ideas for the exploration of similar deposits in the region and broaden the prospects of regional prospecting.
作者
吕晓宏
尹琼
余璨
沈忠义
LYU Xiaohong;YIN Qiong;YU Can;SHEN Zhongyi(China Nonferrous Metals Industry Kunming Survey,Design and Research Institute Co.,Ltd.;Kunming Metallurgy College)
出处
《现代矿业》
CAS
2022年第3期74-77,86,共5页
Modern Mining
关键词
铜矿
矿床地质特征
成矿机理
找矿模型
copper mine
geological characteristics of the deposit
metallogenic mechanism
prospect⁃ing model
