桂北龙胜地区岩湾金矿地球化学特征  

Geochemical characteristics of Yanwan gold deposit in Longsheng area of northern Guangxi

作　　者：周守余[1] 丁汝福[1,2] 刘伟[1] 陶明荣[1] 胡乔帆[1] ZHOU Shouyu DING Rufu LIU Wei TAO Mingrong HU Qiaofang(China Nonferrous Metals （Guilin ） Geology and Mining Co. ,Ltd. , Guilin 541004 ,Guangxi China Non-ferrous Metals Resource Geological Survey ,Beijing 100012 ,China)

机构地区：[1]中国有色桂林矿产地质研究院有限公司,广西桂林541004 [2]有色金属矿产地质调查中心,北京100012

出　　处：《矿产与地质》2017年第3期488-492,共5页Mineral Resources and Geology

基　　金：广西第三批特聘专家"中国有色桂林矿产地质研究院有限公司隐伏矿找矿预测研究"专项资金资助

摘　　要：岩湾金矿是产于前寒武纪浅变质碎屑岩系的脉状金矿。受NNE向断裂控制,围岩蚀变强度不高,矿物组合比较简单,金主要以自然金独立矿物形式存在。经对流体包裹体、微量元素、稀土元素和同位素等研究,认为矿源主要来自于上地壳围岩,硫源主要来自下地壳,成矿温度以130℃~230℃为主,属中低温热液矿床。Yanwan gold deposit is produced in shallow metamorphic clastic rock series of Precambrian system as a gold vein deposit.It is controlled by the NNE fault.The wallrock alteration intensity is not high,and the mineral composition is relatively simple.Gold element exists in the form of independent minerals.Based on the study of fluid inclusions,trace elements,rare earth elements and sulfur isotope,it is suggested that the mineral resource is mainly derived from the surrounding rock in the upper crust,and that sulfur source is mainly derived from the lower crust.It is a hydrothermal deposit of low-middle temperature for the ore-forming temperature is mainly within 130℃-230℃.

关 键 词：岩湾金矿 地球化学特征 中低温热液矿床 桂北 

分 类 号：P618.51[天文地球—矿床学] P595[天文地球—地质学]