摘要
通过对我国微细浸染型金矿床稳定同位素、黄铁矿微量元素及REE特征等的分析研究发现:硫源既有深源(岩浆源)特征:又有浅源(地层源)特征;含矿热液既有变质水、天水特征,又有岩浆水特征。矿石中黄铁矿微量元素主要反映沉积特征;REE演化特征表明:矿石与围岩有生因联系。据此认为,微细浸染型金矿床成矿物质具多来源性,既有地层源又有岩浆—热液源,以前者为主。前者是成矿的基础,后者是(矿石)叠加变富的条件。
Through the studies of stable isotope, trace elements in pyrite and REE of the micro-fine disseminated type gold deposit in our country,the author found that the source of sulfur have both the characteristics of deep source (magmatic source)and shallow source (stratigraphic source); the ore-bearing hydrothermal solution have also characteristics of metamorphic water, meteoric water and magmatic, water; the trace elements in pyrite reflected mainly sedimentary features; the evolutionary feature of REE indicate that the metallization have genetic relationship with surrounding rocks. Therefore, the author held that the oreforming materials of micro-fine disseminated type gold deposit came from multiple sources. The strata is a main source and the basis for metallization, the magma (hydrothermal solution) provided a condition for metallization superimposition and enrichment.
关键词
微细浸染型
金矿床
成矿物质来源
micro-fine disseminated gold type deposit ore-forming material sources
