东天山麦契齐一带金矿床地质特征及金的赋存状态研究

The Study on the Geological Features and Occurrence of the Gold Deposits in the Maiqiqi Area,East Tianshan Mountain,Xinjiang

在总结麦契齐一带金矿床成矿地质特征基础上,结合电子探针分析结果,对研究区金矿床主要载金矿物特征及金的赋存状态进行探讨。麦契齐一带金矿床主要载金矿物为自然金、黄铁矿、黄铜矿及毒砂,金的赋存状态以粒间金为主,次为包裹金。通过主要载金矿物黄铁矿中Co,Ni含量及Co/Ni,推测黄铁矿具热液矿床成因或火山成因。

This report mainly discusses the features of the main gold-carrying minerals of the gold deposits and its occurrence in the study area which is based on the summarization of the geological features of gold deposits in the Maiqiqi area,combined with the results of electronic probe microscopy analysis.The main gold-bearing minerals in the Maiqiqi gold deposits area are native gold,pyrite,chalcopyrite and Arsenopyritein.Meanwhile,the occurrence of gold is primarily intergranular gold followed by encapsulated gold.Furthermore,the content of Co and Ni,and the Co/Ni ratio of the main gold-bearing mineral pyrite suggest that the pyrite has hydrothermal deposit genesis or volcanogenic mineral deposit genesis.