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。
In order to study the metallogenic regularity and gold and copper ore_control factors 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 metallogenic characteristics of the two deposits are different. The Heicigou gold deposit is characterized by fine disseminated gold mineralization rich in As and Sb together with some Au_bearing stibnite quartz veins, whereas the Jiagongtai gold deposit by As_, Sb_poor Au_bearing quartz veins and altered rocks. This difference may be related to the different magmatic activities. The authors hold that the Heicigou gold deposit and the Jiagongtai gold deposit are related to quartz syenodiorite and plagiogranite respectively, and that different magmatic intrusions result in different gold mineralization.
出处
《矿床地质》
CAS
CSCD
北大核心
2003年第2期191-198,共8页
Mineral Deposits
基金
原地质矿产部定向科研项目 ( 98_16)资助
关键词
成矿规律
控矿因素
地质地球化学方法
金矿床
岩浆活动
甘肃
geology, gold deposits, quartz syenodiorite, plagiogranite, Heicigou,Jiagongtai,South Qilian Mountains
