青海陆日格矿床中铋碲赋存形式的电子探针研究

Study on the existing forms of Bi-Te from Lurige deposit,southern Qinghai by electron microprobe analysis

本文主要利用电子探针对陆日格斑岩铜钼矿床中的Bi、Te矿物进行X射线元素图像分析及定量分析,明确了Bi、Te的赋存状态、分布形态及元素成分组合。研究结果表明,陆日格斑岩铜钼矿床中Bi、Te主要以两种形式赋存于矿石中。一种以类质同象的形式存在于黄铁矿中;另一种以独立矿物的形式存在于黄铁矿包体或裂隙中。独立矿物主要为自然铋、因硫铋碲矿、辉硫铋碲矿及硫铋铅矿等。矿床勘探开发需考虑Bi、Te等分散元素的综合利用,以提高矿区的经济价值。

This paper studied the existing forms,distribution patterns and element composition of the Bi and Te elements from Lurige porphyry Cu（Mo） deposit,southern Qinghai province by X-ray image analysis and element quantitative analysis using Electron microprobe.The results show that Bi and Te exist in Lurige porphyry Cu（Mo） deposits mainly in two forms： one exists in the pyrite by isomorphism form,and the other exists in the inclusions or fissures of the pyrite as independent minerals.The independent minerals are natural bismuth,Tetradymite,Ingodite,lillianite and so on.Comprehensive utilization of Bi and Te in the exploration and development of deposits can increase the economic value of.mining area.