云南金平长安金矿断裂控矿作用浅析  

A PRELIMINARY ANALYSIS OF FAULT ORE CONTROL OF CHANGAN AU DEPOSIT IN JINPING,YUNNAN

作　　者：王利东[1] 

机构地区：[1]云南黄金矿业集团股份有限公司,云南昆明650224

出　　处：《云南地质》2014年第3期329-335,共7页Yunnan Geology

摘　　要：长安金矿矿体呈似层状、透镜状产于NE陡倾F6断层破碎带的东亚带砂泥质构造岩中,成矿期发生近EW向断裂的构造叠加,成矿之后又遭受到近EW向小断裂的破坏。F6断层破碎带西亚带具导矿作用,东亚带起到容矿的作用,成矿期叠加的EW向断裂(F7、F8、F9等)兼具导矿和容矿作用,侵入于F6断裂带中的细晶正长岩、煌斑岩、辉绿岩等岩浆活动所带来的成矿流体促使矿质富集,形成工业矿体,成矿期后近EW向断裂(F10-1、F10-2)和NNW、NE向小断裂(f)为破矿构造。据此把长安金矿断裂构造演化和成矿初步分为主控矿断裂成矿、叠加断裂成矿和后期断裂破矿三个演化阶段。The ore body of Changan Au deposit is stratoid, lenticular in muddy tectonic rock of E subzone in NE steep dipping fault F6 fracture zone, EW fault structure superimposition in metallogenesis period and damaged by nearly EW small fault after metallogenesis. The W subzone of Fs fracture zone is the ore transfer channel, whereas theE subzone is the ore container. The superimposition EW faults （F7, F8, F9, etc ） are both ore transfer channel and container. The aplitic syenite, lamprophyre, diabase, etc intrusion in fault F6 zone causes ore to concentrate and form the commercial ore body. The post-metallogenetic nearly EW faults （F10-1 , F10-2 ） and NNw, NE small faults （f） are the deposit damage structure. Therefore, we have preliminarily divided the faults in Changan Au orefield into 3 evolution stages, the main ore control fault metallogenesis, the superimposition fault metallogenesis and the later fault deposit damage.

关 键 词：多期构造 断裂控矿 云南金平长安 

分 类 号：P618.51[天文地球—矿床学]