麻栗坡大丫口祖母绿矿床地质特征及成因浅析  

Geological characteristics and genesis of the emerald deposit in Malipo

作　　者：陈学永 徐东 涂长寿 黄金 付兴 CHEN Xue-yong XU Dong TU Chang-shou HUANG Jin FU Xing(317 team in Yunnan Nonferrous Geological Bureau,Qujing 655000,China Yunnan Hualian mineral exploration Co., Ltd.,qujing 655000,China)

机构地区：[1]云南省有色地质局三一七队,云南曲靖655000 [2]云南华联矿产勘探有限责任公司,云南曲靖655000

出　　处：《世界有色金属》2017年第6期38-40,共3页World Nonferrous Metals

摘　　要：麻栗坡大丫口祖母绿矿床赋存于变质核杂岩构造变质内核中,形成白垩纪花岗岩岩浆活动晚期的残余岩浆和热液产生的伟晶作用和交代作用,于主要产于酸性花岗伟晶岩脉与云英岩脉中,受北东向大丫口剥离断层控制。通过分析矿区地质、矿体特征、化学成分、晶体形态、物理性质、包裹体及裂隙特征,得出矿床属花岗伟晶岩脉型及气成高温热液云英岩脉型矿床。Malipo Dayakou emerald deposit occurs in the metamorphic core complex metamorphic core, pegmatite and metasomatism residual magma and hydrothermal formation of Cretaceous granitic magmatism in the late generation, mainly occurs in the acidic granitic pegmatite veins and greisen, controlled by NE Dayakou detachment fault. Through the analysis of geology, orebody characteristics, chemical composition, crystal morphology, physical properties, inclusions and fracture characteristics, the ore deposit belongs to pegmatite type gas and hydrothermal greisen type deposits.

关 键 词：祖母绿矿床 伟晶岩 交代作用 麻栗坡 

分 类 号：P619.28[天文地球—矿床学]