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.
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)
