山西辛庄金矿床地质地球化学特征及成因分析

Geological and geochemical characteristics and cause of Xinzhuang Gold Deposit, Shanxi Province

总结辛庄金矿区地质特征,并从成矿物质来源、矿化产出形式、矿物共生组合和矿石组构、围岩蚀变以及成矿方式等方面探讨辛庄金矿的矿床成因。对矿床微量元素、稀土元素及同位素等地球化学特征进行分析。研究结果表明:本区脉状矿体受北西及北北西向两组断裂构造控制作用明显,矿石类型具有多样式、多矿种组合的特征;岩体源岩来自于地壳,燕山期岩浆活动为本区提供了成矿物质和成矿流体;矿床为与燕山期中酸性岩浆侵入活动有关的热液充填石英脉型金矿床。

The characteristics of the Xinzhuang gold geological were summarized,the deposits geochemical characteristics of trace element,rare earth elements and isotope were studied,and the genesis of deposit was researched combined with the ore-forming material source,mineralization type,mineral assemblages and mineral fabric,wall rock alteration and pattern of metallogeny.The results show that vein ore bodies are controlled by the NW and NNW fault structures obviously.Ore types have multi-format,multi-minerals assemblage characteristics.The source rocks of the rock body originate from the earth’s crust,and magmatic activities of Yanshanian provide a large number of ore-forming material and ore-forming fluid.The ore genesis of Xinzhuang Gold Deposit has the low temperature filling quartz vein type related to the Yanshanian mediosilicic-acid magma intrusion activities.