金川硫化铜镍矿床辉长岩化与硫化物富集成矿模式  

Gabbroization and Sulfide Enrichment Model of Jinchuan Cu-Ni Sulfide Deposit

作　　者：张建辉 Zhang Jian-hui

机构地区：[1]镍钴共伴生资源开发与综合利用全国重点实验室 [2]金川镍钴研究设计院

出　　处：《金川科技》2024年第3期1-7,14,共8页Jinchuan Science and Technology

摘　　要：金川矿床不含矿岩体与含矿岩体的组合变化规律说明,在原始岩浆的演化过程中,超基性岩浆经历了辉长岩化的改造,熔离作用并不是金属硫化物熔融体与硅酸盐熔融体的熔离,而是金属硫化物+橄榄石共熔相与不含矿岩浆的熔离分异。辉长岩化和金属硫化物+橄榄石共熔相与不含岩浆的熔离分异是金川矿床形成的重要机制。金川矿床的辉长岩化作用不够强烈,因此,不能形成规模较大的块状硫化物矿体。The combination change law of non-ore body and ore-bearing body in Jinchuan deposit shows that during the lithification process of the original ultrabasic magma,the transform of gabbroization was experienced,and the melting separation is not the melting separation of metal sulfide melt and silicate melt,but the melting separation of metal sulfide and olivine eutectic phase and sulfide free magma.Gabbroization and the separation of metal sulfide and olivine eutectic phase from sulfide free magma phase are important mechanisms for the formation of Jinchuan deposit.The gabbroization of Jinchuan deposit is not strong enough,so it can not form large scale massive sulfide ore body.

关 键 词：金川铜镍硫化物矿床 辉长岩化 金属硫化物+橄榄石共熔相 组合规律 岩相 

分 类 号：P61[天文地球—矿床学]