姚安金矿床成因机制研究  

A PRELIMINARY STUDY ON THE GENETIC MECHANISM OF YAOAN AU DEPOSIT

作　　者：钱祥贵[1] 李志伟[2] 柏坚 

机构地区：[1]云南省国土资源厅信息中心,云南昆明650011 [2]云南国土资源厅评审中心,云南昆明650011 [3]云南省地质调查院,云南昆明650011

出　　处：《云南地质》2002年第1期42-49,共8页Yunnan Geology

基　　金：云南省省院省校科技合作项目 (编号YK980 0 8 1)

摘　　要：姚安金矿床矿石品位富 ,载金矿物及其共生矿物组合较为特殊、复杂。从含矿段岩石组合、围岩、含金矿石、含金矿物及火山 次火山侵入岩的稀土元素和微量元素特征 ,结合矿石的同位素及包裹体分析资料对比研究认为 :(1)成矿金质来源于围岩 (侏罗系碎屑岩 )和火山 次火山岩 ;(2 )金成矿滞后于岩浆岩的侵入期 。Geologists pay great attention to the Yaoan au deposit because of its high grade of ore, special and complex Au-bearing mineral and paragenesis. According to the study on its rock assemblage of ore member, host rock, Au ore, Au mineral, REE and trace element of volcanic-subvolcanic inclusion of the ore, we believe that 1.the metallogenetic Au is originated from the host rock(Jurassic clastic rock)and the volcanic-subvolcanic rock; 2.Au metallogenesis is later than the intrusion of magmatic rock, in the same time as the structure activity or slightly later.

关 键 词：稀土元素 微量元素 同位素 金矿成因机制 姚安市 金矿床 云南 

分 类 号：P618.51[天文地球—矿床学]