• 责任者：Wang Xueqiu (Institute of Geophysical and Geochemical Exploration CAGS ; Langfang 065000 ; China) ; Zhang Bimin
• 刊名：Earth Science
• 出版年：2012
• 卷期：37(6)
• 关键词：地球化学勘查 ; geochemical exploration ; 隐伏矿床 ; blind deposit
• 页码：p.1126-1132
• 图表：8 illus., 16 refs.
• 分类号：1500,1001
• issnNo：ISSN1000-2383
• isbnNo：CN42-1233/P

Recent years, a progress on exploration geochemistry has been made in findings of evidences of nanoparticles of metals and metals in vegetable cells. The findings have provided nanoscale and molecular-level understanding of metal transportation from the concealed ore bodies through the overburden covers. The case history studies from concealed Au, Cu-Ni, CuAu-Ag deposits show that these nanoparticles of metals could penetrate through sedimentary, metamorphic and soil covers to the surface. Nanoparticle sampling and selective leaching of oxide coatings are effective to indicate concealed deposits. The results show that uranium is converted to uranyl ions（UO22＋）under oxidizing conditions and is sorbed on clay minerals to accumulate in anomalous concentrations, which comprise from 17.9% to 40% of the total U content.