大宝山多金属矿床稀散元素的赋存状态

Occurrence state of scattered elements in Dabaoshan polymetallic deposits

以大宝山多金属矿床的矿石为研究对象,在详细野外勘查、室内光学显微观察矿相的基础上,通过高精度电子探针分析测试手段,研究了稀散元素分布规律、赋存状态及与主成矿元素的关系,揭示了稀散元素在本区的富集规律。In、Cd与Ga主要富集于铅锌矿中,Ge、Se主要富集于铜铁钼矿中,Te主要以独立矿物碲化铋存在于矿石中,极低含量Te以类质同象的形式赋存于黄铁矿中,辉钼矿是Re的唯一富集矿物;稀散元素在本区的赋存形式主要有两种:类质同象和独立矿物。

In this paper, the ore of the Dabaoshan polymetallic deposit is taken as the study object. Study presents the distribution, occurrence state of scattered elements and their relationship with the major metallogenic elements by high-precision electron probe microanalysis on the basis of detailed field survey and mineral observing facies by light microscope inside to reveal enrichment law of scattered elements.Cadmium and gallium are mainly enriched inleadzinc ores. Additionally germanium and selenium are mainly enriched in copper, iron and molybdenum. Meanwhile, tellurium mainly exists in the form of independent mineral bismuth telluride in the ore, and the very low content of tellurium occurs in pyrite in the form of similar material.Nevertheless molybdenum is the only mineral enriched in rhenium in this area.There are two main forms of scattered elements in this area: isomorphism and independent minerals.