西双版纳国防铁矿控矿条件及矿体分布规律  

THE ORE CONTROL CONDITION AND ORE BODY DISTRIBUTION OF GUOFANG FE DEPOSIT,XISHUANGBANNA

作　　者：杨建华 高旭焦 谭晓伟 

机构地区：[1]云南省地质工程勘察总公司,云南昆明650051

出　　处：《云南地质》2012年第3期335-339,共5页Yunnan Geology

摘　　要：铁矿体赋存于中元古界大勐龙群疆峰旋回第二、四段。含矿岩石为变中基性熔岩、角闪(阳起)斜长变粒岩、透辉钠长(斜长)变粒岩,分为上(Ⅰ)和下(Ⅱ)矿层。上矿层不稳定,下矿层由4个矿体组成复式矿。铁质就地运移、聚集、变质,典型的受变质火山汽液磁铁矿床。The Fe ore body is in the member 2,4 of Jiangfeng cycle of Middle Proterozoic Damenglong Group.The ore-bearing rocks are the meta-intermidiate-basic lava,hornblende(actinolite)plagioclase granulite,diopside albite(plagioclase)granulite.The ore deposit can be divided into the upper(Ⅰ)and lower(Ⅱ)2 ore bed.The upper one is stable.There are 4 ore bodies in lower one,which is a composite ore deposit,The Fe is transported,agglomerated and metamorphosed in-situ.It is a typical metamorphosed volcanic hydropneumatic magnetite deposit.

关 键 词：变质磁铁矿 火山汽液成矿 后期富化 大勐龙群 云南景洪国防铁矿 

分 类 号：P618[天文地球—矿床学]