| 南祁连党河南山北坡两个不同特征的金矿床 |
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| 引用本文：.2003.Two Different Kinds of Gold Deposits on Northern Slope of Danghenanshan Area in South Qilian Mountains[J].Mineral Deposits,22(2):191~198 |
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| 基金项目:原地质矿产部定向科研项目(98-16) |
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| 中文摘要:为深入研究甘肃南祁连党河南山北坡金铜矿产的成矿规律和控矿因素，笔者采用地质地球化学方法首次对区内黑刺沟和贾公台两个金矿床进行了较为系统的研究，发现它们的成矿特征有很大差异：黑刺沟金矿床以富As，Sb的微细浸染蚀变岩型金矿化为主，其次为辉锑矿石英脉型金矿化；而贾公台金矿床则以少硫化物石英脉型金矿化和蚀变岩型金矿化为特征，As，Sb含量不高。研究认为黑刺沟金矿床与矿区石英正长闪长岩类有成因联系，贾公台金矿床与矿区斜长花岗岩有成因联系，不同的岩浆活动造成了金矿化特征的差异。 |
| 中文关键词:地质学 金矿床 石英正长闪长岩 斜长花岗岩 黑刺沟 贾公台 南祁连 |
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| Two Different Kinds of Gold Deposits on Northern Slope of Danghenanshan Area in South Qilian Mountains |
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| Abstract:In order to study the metallogenic regularity and gold and copper ore-control fa ctors on the northern slope of Danghenanshan area in South Qilian Mountains, the authors made a systematical geological and geochemical studies on the Heicigou and the Jiagongtai gold deposits in this area. It is thus concluded that the met allogenic characteristics of the two deposits are different. The Heicigou gold d eposit is characterized by fine disseminated gold mineralization rich in As and Sb together with some Au-bearing stibnite quartz veins, whereas the Jiagongtai g old deposit by As-, Sb-poor Au-bearing quartz veins and altered rocks. This diff erence may be related to the different magmatic activities. The authors hold tha t the Heicigou gold deposit and the Jiagongtai gold deposit are related to quart z syenodiorite and plagiogranite respectively, and that different magmatic intru sions result in different gold mineralization. |
| keywords:geology, gold deposits, quartz syenodiorite, plagiogranite,Heicigou,Jiagongtai,South Qilian Mountains |
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