印尼北马鲁古省某红土型镍矿地球化学异常特征及找矿靶区优选  

The geochemical anomaly characteristics and prospecting target optimization of the lateritic nickel deposits in the north Maluku islands area of Indonesia

作　　者：李杰 LI Jie(Geological Survey Institute of Hunan Province,ChangSha 410114,Hunan,China)

机构地区：[1]湖南省地质调查所,湖南长沙410114

出　　处：《矿产与地质》2024年第5期983-989,共7页Mineral Resources and Geology

摘　　要：红土型镍矿因探明储量多和易开采的特点成为全球镍开发利用重点。本文以印尼北马鲁古省哈马黑拉岛北部某红土型镍矿为研究对象,通过12.5万土壤地球化学测量,圈定5处Ni、Co、Cr、Cu综合异常。在综合异常基础上,开展异常查证,进而圈定找矿靶区。结果表明:该区具有成矿元素垂向分带性(5个分带),分布的成矿元素含量呈先升后降趋势,在强风化残余型红土中最为富集。Lateritic nickel deposits have become the focus of global nickel development and utilization due to their large proven reserves and easy mining.Taking a lateritic nickel deposit in northern Hamahera Island,North Maluku Province,Indonesia as the research object,five comprehensive anomalies of Ni,Co,Cr and Cu were delineated by 125,000 soil geochemical survey.On the basis of comprehensive anomalies,anomaly verification is carried out,and then the prospecting target area is delineated.The results show that the area has vertical zoning of ore-forming elements(5 zoning),and the content of ore-forming elements increases first and then decreases,which is the most abundant in strongly weathered residual laterite.

关 键 词：红土型镍矿 土壤地球化学测量 综合异常 成矿元素 分带性 北马鲁古 印尼 

分 类 号：P618.63[天文地球—矿床学] P632[天文地球—地质学]