北祁连鹰嘴山金矿床原生晕地球化学特征及深部矿体预测  

Geochemical Characteristics of Primary Halo and Deep Orebody Prediction in the Yingzuishan Gold Deposit,North Qilian

作　　者：叶红刚 张德会[2] 余君鹏[1] 樊新祥 赵吉昌 张涛 冯占东[1,3] YE Hong-gang;ZHANG De-hui;YU Jun-peng;FAN Xin-xiang;ZHAO Ji-chang;ZHANG Tao;FENG Zhan-dong(No.4 Geology and Mineral Exploration Team,Gansu Provincial Bureau of Geology and Mineral Exploration and Development,Jiuquan Gansu 735000,China;School of Earth Sciences and Resources,China University of Geosciences in Beijing,Beijing 100083,China;Golden Eagle Gold Co.,Ltd Jiuquan Gansu 735000,China)

机构地区：[1]甘肃省地矿局第四勘查院,甘肃酒泉735000 [2]中国地质大学(北京)地球科学与资源学院,北京100083 [3]金鹰黄金有限责任公司,甘肃酒泉735000

出　　处：《矿物岩石地球化学通报》2018年第6期1163-1172,共10页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：中国地质调查局危机矿山接替资源勘查项目(12120114071101)

摘　　要：为探讨鹰嘴山金矿深部找矿潜力,解决资源危机,对主矿体开展了原生叠加晕研究。结果显示,原生晕轴向分带序列自矿体下部至上部为:Au-W-Mn-Zn-Hg-Sb-Cu-Co-V-Ti-Ni-Ag-B-Pb-Bi-As-Sn-Mo,出现“反向分带序列”现象,显示多阶段叠加成矿的特征;地球化学参数自地表向下有:增大→减小→增大变化趋势,矿体剥蚀参数随着标高的降低逐渐升高,且矿体下部前缘晕强度较大,尾晕出现弱异常,推测认为沿断裂延伸方向可能有盲矿存在,深部找矿前景良好。原生叠加晕方法在该区域目前应用较少,本次模型的建立和找矿标志的确定,为区域同类矿床成矿预测提供了新途径。The Yingzuishan gold deposit is a structure-controlled alteration type gold deposit in the Caledonian North Qilian Orogenic Belt. In order to evaluate the prospecting potential of deep ore bodies, a research on primary superimposed halo of the main orebody was carried out. The primary zonal axial zonation sequence from the lower part of the ore body upwards is Au-W-Mn-Zn-Hg-Sb-Cu-Co-V-Ti-Ni-Ag-B-Pb-Bi-As-Sn-Mo, displaying a "reverse zoning sequence" phenomenon, which suggest multi-stage superimposed mineralization. From the surface downwards, the geochemical parameters show the trend of increasing→decreasing→ increasing. In the tail of the ore body, geochemical parameters turn to rise. The denudation parameters of the ore body gradually increase with the decrease of the elevation. In the lower part of the orebody, the fore halo has high intensity, while the rear halo shows weak anomaly. It is presumed that there may be blind ore bodies along the extension of the fault, and there is a good exploration potential in the deep. Due to the limitation of the application of primary halo, the establishment of this model and the determination of prospecting indicators provide a new direction for ore-forming prediction of the same type of deposits in the area.

关 键 词：鹰嘴山金矿 原生晕 轴向分带序列 反向分带 找矿预测 北祁连 

分 类 号：P618.51[天文地球—矿床学]