贵州泥堡金矿床原生晕特征及深部找矿预测——以Ⅲ-1号矿体为例  

Primary Halo Characteristics and Deep Ore Body Prospecting of the Nibao Gold Deposit,Guizhou Province: Ilustrated with the Example of Ⅲ-1 Orebody

作　　者：吴松洋[1,2] 侯林[2] 丁俊[2] 张锦让[2] 朱斯豹[2] 王疆丽 WU Song-yang1,2 HOU Lin2. DING Jun2 ZHANG Si-bao2,WANG Jiang-li2(1. School of Earth Sciences and Resources, China University（Beijing） of Geoseienees , Beijing 100083, China; 2. Chengdu Center, China Geological Survery, Chengdu 610081, China)

机构地区：[1]中国地质大学(北京)地球科学与资源学院,北京100083 [2]中国地质调查局成都地质调查中心,成都610081

出　　处：《矿物岩石地球化学通报》2018年第4期674-686,共13页Bulletin of Mineralogy, Petrology and Geochemistry

基　　金：中国地质调查局地质调查项目(12120113094400)

摘　　要：为预测和评价贵州普安泥堡金矿床的成矿潜力,采用原生晕地球化学方法对10460勘探线所控制的Ⅲ-1号矿体进行原生晕轴向分带特征研究。采集了该勘探线上6个钻孔矿体附近的构造蚀变岩石样品进行ICP-AES分析。通过对各元素进行相关性分析及因子分析,选取原生晕地球化学特征研究的指示元素为Au、As、Ag、Cu、Hg、Mo、Co、Cd、Sb。综合原生晕分带图及指示元素分带序列分析,判断Ⅲ-1矿体原生晕出现了明显的分带异常,其由浅部到深部总体表现为：前缘晕元素＋尾晕元素—近矿晕—前缘晕元素＋近矿晕元素＋尾晕元素的元素异常分布序列,指示在深部存在一个或多个隐伏矿体,是造成元素异常叠加共存与轴向分带序列异常的原因。In order to predict and evaluate the potential of mineralization at depth in the Nibao gold deposit,primary halo geochemical method has been applied for figuring out the zoning pattern of primary halo in Ⅲ-1 orebody which was controlled by the 10460 exploration line. All altered samples near the orebody for ICP-AES analysis were collected from six drills. According to the correlation and factor analyses of elements,nine elements（ Au,As,Ag,C,Hg,Mo,Co,Cd,Sb） are chosen for the geochemical characteristics study of primary halo. The elemental zonation indicates the anomaly of primary halo of Ⅲ-1 orebody,which is characterized by the sequence of front halo,rear halo-near-ore halo-front halo,near-ore halo,and rear halo from shallow to deep. These zonation features of Ⅲ-1 ore body suggest that the existence of one or more blind orebodies,leading to a multi-stage mineralization.

关 键 词：原生晕 地球化学分析 隐伏矿体 泥堡金矿床 贵州 

分 类 号：P618.51[天文地球—矿床学]