Comparative Study on Geochemical Characteristics of the Kubusu and Jinshangou Gold Deposits
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摘要: 新疆东准噶尔成矿条件优越，是中国重要的金成矿带之一。本次研究选取该矿带典型成因类型的金矿床——库布苏金矿和金山沟金矿，运用岩石地球化学的方法，对比分析矿床元素的地球化学特征，以探讨其成矿地质条件、成矿构造环境、成矿流体来源等方面的联系。研究表明，库布苏金矿火山岩类型可能属于正常太平洋（钙碱性）型，而金山沟金矿可能为造山期的陆相火山岩，2个矿床的火山岩类型均为壳幔熔岩；矿脉和围岩在成矿物质来源上均具有同源或继承上的联系；库布苏金矿成矿环境与海相岩浆岩活动有关，而金山沟金矿与陆相火山喷溢喷发建造有关。Abstract: East Junggar of Xinjiang is one of the important gold metallogenic belts in our country and has superior metallogenic conditions. In this paper, the typical genetic types of gold deposits in thismetallogenic belt-Kubusu and Jinshangou gold deposits have been selected as research objects, the geochemical behaviors between these two deposits have been compared and analyzed by using geochemical methods, the mineralization geological conditions, mineralization tectonic environment and the source of ore-forming fluid of these deposits have been discussed. The results show that the volcanic rocks of the Kubusu gold deposit may be normal Pacific (calc-alkaline) type, while the ones of the Jinshangou gold deposit may be belong to orogenic continental volcanic rocks during orogenic period, and both of them belong to all crust-mantle lava.The ore-forming materials of veins and surrounding rocks are all have homologous or inheritance relations.The metallogenic environment of the Kubusu gold deposit is related to marine magmatic activities, while the Jinshangou gold deposit has a connection with continental volcanic eruption.
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Keywords:
- Kubusu gold deposit /
- Jinshangou gold deposit /
- geochemistry /
- East Junggar
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