摘要
马鹿塘金矿床位于哀牢山断裂与藤条江断裂夹持地段,区内断裂普遍发育,为金的富集提供了良好的通道和场所。该区岩浆活动强烈,具有多期次、多阶段活动的特征,主要经历了3个岩浆活动期,分别为吕梁期、华力西期和印支期,为成矿提供了充足的物质来源和热动力。通过总结矿床地质特征和围岩蚀变特征,认为与金矿化有关的蚀变主要为黄铁矿化、毒砂矿化和硅化等,推断矿床成因属于构造蚀变岩型和次生氧化型。此外,通过开展地球物理和地球化学找矿工作,圈定了有利的异常区,认为该区具有较好的找矿前景。
Mulutang gold deposit is located in the holding location of Ailaoshan and Tengtiaojiang fault,the fracture is general development in this area,which provides a good channel and place for enrichment of gold.The magmatic activity is strong in this area,which has the characteristics of multi-phase and multi-stage acitivities,and undergo three major magmatic activity periods,inclulding Lvliang,Variscan and Indosinian period,also provides sufficient material source and thermal power for mineralization.We think that pyrite,arsenopyrite and silicification alteration are related to gold mineralization by summarizing geological characteristics and wall rock alteration of the deposit,we infer that genesis is structure altered rock type and secondary oxidized.In addition,we delineat favorable abnormal area by geophysical and geochemical explorating,and suggest that this area has better prospecting.
出处
《黄金科学技术》
2011年第5期7-10,共4页
Gold Science and Technology
关键词
地质特征
矿床成因
岩浆活动
马鹿塘金矿
云南省
Geological characteristics
Genesis
Magmatic activity
Malutang gold mine
Yunnan Province
