摘要
金宝山铂族元素矿床是典型的岩浆型矿床,但矿体中广泛发育热液脉状矿石,脉体有较高的铂族元素含量,特别是硫化物细脉为铂族元素的重要载体,反映铂族元素的热液活动。根据岩体主要蚀变类型,区分出岩浆晚期高温流体活动阶段、岩浆期后蛇纹石化阶段和低温碳酸盐化阶段。各阶段热液性质、流体来源及铂族元素热液活动性分析表明,蛇纹石化阶段铂族元素热液活动最强烈,主要表现为就地改造;热液活动未造成矿体形态、产状的根本变化。
Jinbaoshan PGE deposit is a typical magmatic ore deposit,but there are a lot of hydrothermal veins in ores. There are significant PGE contents in the veins,especially in the sulfide veinule. All this showed that PGE remobilized by hydrothermal fluids. According to characteristics of the alteration,three hydrothermal stages had been distinguished. By the analysis of property and the origin of hydrothermal fluids,PGE remobilization in each stage had been discussed. Of three stages,PGE remobilization is the most marked in serpentinization,but mainly modified in situ. The PGE remobilization did not change the shape or occurrence of the ore body.
出处
《矿物岩石地球化学通报》
CAS
CSCD
2003年第1期32-37,共6页
Bulletin of Mineralogy, Petrology and Geochemistry
基金
中国科学院知识创新工程(KZCX2 101
KZCX2 SW 125)资助
